Subject: [Sip] Retransmission of 200 OK after receiving ACK

From: Surya Santosh <[email-masked]>
Date: Tue, 14 Dec 2004 18:25:54 +0530

Hi All,

I have a doubt regarding the processing of ACK  by the UA. The UA , even 
after receving ACK from the other UA is still sending 200 OK's.

I am using the following configuration.

Host1------------Firewall---------------------------Internet
                                          |
                                          |
                                        Host2

I am using AOL instant messenger on both the hosts. I started video from 
Host2 to Host1. As AOL video uses SIP for connection establishment, Host1 
sends SIP INVITE to HOST2 and the following figure depicts the flow of the 
packets between the two UA's.

Host1--------------------------------------Host2
INVITE---------------------->
           <---------------------  100 Trying
           <---------------------  180 Ringing
           <---------------------- 200 OK
ACK    ----------------------->

After receiving the ACK, Host 2 is still sending 200 OK's . It is happening 
often but not all the times.
I have attached the capture of  failure case. Could anyone please help me 
in finding out why Host2 is sending 200 OK' s even after receiving ACK.

Failure Case
Capture At Internal Machine (HOST 1)
No.     Time        Source                Destination           Protocol Info
      68 
14.197405   10.1.6.5              202.125.84.171        SIP/SDP  Request: 
INVITE sip:[email-masked]:1571, with session description

Frame 68 (1078 bytes on wire, 1078 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:06.384363000
     Time delta from previous packet: 14.197405000 seconds
     Time since reference or first frame: 14.197405000 seconds
     Frame Number: 68
     Packet Length: 1078 bytes
     Capture Length: 1078 bytes
Ethernet II, Src: 00:50:fc:b1:ea:9d, Dst: 00:00:24:c2:01:f4
     Destination: 00:00:24:c2:01:f4 (10.1.6.1)
     Source: 00:50:fc:b1:ea:9d (10.1.6.5)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 10.1.6.5 (10.1.6.5), Dst Addr: 202.125.84.171 
(202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1064
     Identification: 0xd3d4 (54228)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x33c2 (correct)
     Source: 10.1.6.5 (10.1.6.5)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 1208 (1208), Dst Port: 1571 (1571)
     Source port: 1208 (1208)
     Destination port: 1571 (1571)
     Length: 1044
     Checksum: 0x69e1 (correct)
Session Initiation Protocol
     Request-Line: INVITE sip:[email-masked]:1571 SIP/2.0
         Method: INVITE
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5:1208
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>
             SIP to address: sip:[email-masked]
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:10.1.6.5:1208>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 667
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 10.1.6.5
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 10.1.6.5
             Session Name (s): session
             Connection Information (c): IN IP4 10.1.6.5
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 10.1.6.5
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1211 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1211
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:aINkrSXVFlOw/LgTKp5bHe1D1a/vQi7wV59gwbXEtRY
                 Key Type: base64
                 Key Data: aINkrSXVFlOw/LgTKp5bHe1D1a/vQi7wV59gwbXEtRY
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1209 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1209
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:9X9PloS9X/sgFGWluGGzdFVMn9iEMyaOMVKenrIlfYw
                 Key Type: base64
                 Key Data: 9X9PloS9X/sgFGWluGGzdFVMn9iEMyaOMVKenrIlfYw
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
      69 
14.208670   202.125.84.171        10.1.6.5              SIP      Status: 
100 Trying

Frame 69 (337 bytes on wire, 337 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:06.395628000
     Time delta from previous packet: 0.011265000 seconds
     Time since reference or first frame: 14.208670000 seconds
     Frame Number: 69
     Packet Length: 337 bytes
     Capture Length: 337 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 323
     Identification: 0xd91e (55582)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x325d (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 303
     Checksum: 0xd0fb (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 100 Trying
         Status-Code: 100
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      70 
14.209958   202.125.84.171        10.1.6.5              SIP      Status: 
180 Ringing

Frame 70 (338 bytes on wire, 338 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:06.396916000
     Time delta from previous packet: 0.001288000 seconds
     Time since reference or first frame: 14.209958000 seconds
     Frame Number: 70
     Packet Length: 338 bytes
     Capture Length: 338 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 324
     Identification: 0xd91f (55583)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x325b (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 304
     Checksum: 0x9ad6 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 180 Ringing
         Status-Code: 180
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      71 
14.553022   202.125.84.171        10.1.6.5              SIP/SDP  Status: 
200 OK, with session description

Frame 71 (1081 bytes on wire, 1081 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:06.739980000
     Time delta from previous packet: 0.343064000 seconds
     Time since reference or first frame: 14.553022000 seconds
     Frame Number: 71
     Packet Length: 1081 bytes
     Capture Length: 1081 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1067
     Identification: 0xd920 (55584)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x2f73 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 1047
     Checksum: 0x39bc (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
      73 
15.042612   202.125.84.171        10.1.6.5              SIP/SDP  Status: 
200 OK, with session description

Frame 73 (1081 bytes on wire, 1081 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:07.229570000
     Time delta from previous packet: 0.489590000 seconds
     Time since reference or first frame: 15.042612000 seconds
     Frame Number: 73
     Packet Length: 1081 bytes
     Capture Length: 1081 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1067
     Identification: 0xd921 (55585)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x2f72 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 1047
     Checksum: 0x39bc (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 71
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     121 
16.043599   202.125.84.171        10.1.6.5              SIP/SDP  Status: 
200 OK, with session description

Frame 121 (1081 bytes on wire, 1081 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:08.230557000
     Time delta from previous packet: 1.000987000 seconds
     Time since reference or first frame: 16.043599000 seconds
     Frame Number: 121
     Packet Length: 1081 bytes
     Capture Length: 1081 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1067
     Identification: 0xd923 (55587)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x2f70 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 1047
     Checksum: 0x39bc (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 71
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     166 
16.881442   10.1.6.5              202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 166 (374 bytes on wire, 374 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:09.068400000
     Time delta from previous packet: 0.837843000 seconds
     Time since reference or first frame: 16.881442000 seconds
     Frame Number: 166
     Packet Length: 374 bytes
     Capture Length: 374 bytes
Ethernet II, Src: 00:50:fc:b1:ea:9d, Dst: 00:00:24:c2:01:f4
     Destination: 00:00:24:c2:01:f4 (10.1.6.1)
     Source: 00:50:fc:b1:ea:9d (10.1.6.5)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 10.1.6.5 (10.1.6.5), Dst Addr: 202.125.84.171 
(202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 360
     Identification: 0xd431 (54321)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x3625 (correct)
     Source: 10.1.6.5 (10.1.6.5)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 1208 (1208), Dst Port: 1571 (1571)
     Source port: 1208 (1208)
     Destination port: 1571 (1571)
     Length: 340
     Checksum: 0x37c0 (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5:1208
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     176 
17.012456   10.1.6.5              202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 176 (374 bytes on wire, 374 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:09.199414000
     Time delta from previous packet: 0.131014000 seconds
     Time since reference or first frame: 17.012456000 seconds
     Frame Number: 176
     Packet Length: 374 bytes
     Capture Length: 374 bytes
Ethernet II, Src: 00:50:fc:b1:ea:9d, Dst: 00:00:24:c2:01:f4
     Destination: 00:00:24:c2:01:f4 (10.1.6.1)
     Source: 00:50:fc:b1:ea:9d (10.1.6.5)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 10.1.6.5 (10.1.6.5), Dst Addr: 202.125.84.171 
(202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 360
     Identification: 0xd43a (54330)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x361c (correct)
     Source: 10.1.6.5 (10.1.6.5)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 1208 (1208), Dst Port: 1571 (1571)
     Source port: 1208 (1208)
     Destination port: 1571 (1571)
     Length: 340
     Checksum: 0x37c0 (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5:1208
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     178 
17.041945   10.1.6.5              202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 178 (374 bytes on wire, 374 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:09.228903000
     Time delta from previous packet: 0.029489000 seconds
     Time since reference or first frame: 17.041945000 seconds
     Frame Number: 178
     Packet Length: 374 bytes
     Capture Length: 374 bytes
Ethernet II, Src: 00:50:fc:b1:ea:9d, Dst: 00:00:24:c2:01:f4
     Destination: 00:00:24:c2:01:f4 (10.1.6.1)
     Source: 00:50:fc:b1:ea:9d (10.1.6.5)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 10.1.6.5 (10.1.6.5), Dst Addr: 202.125.84.171 
(202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 360
     Identification: 0xd43c (54332)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x361a (correct)
     Source: 10.1.6.5 (10.1.6.5)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 1208 (1208), Dst Port: 1571 (1571)
     Source port: 1208 (1208)
     Destination port: 1571 (1571)
     Length: 340
     Checksum: 0x37c0 (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 10.1.6.5:1208
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
    2978 
78.302363   202.125.84.171        10.1.6.5              SIP      Request: 
BYE sip:10.1.6.5:60324

Frame 2978 (375 bytes on wire, 375 bytes captured)
     Arrival Time: Dec 14, 2004 11:36:10.489321000
     Time delta from previous packet: 61.260418000 seconds
     Time since reference or first frame: 78.302363000 seconds
     Frame Number: 2978
     Packet Length: 375 bytes
     Capture Length: 375 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 361
     Identification: 0xd965 (55653)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x31f0 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 341
     Checksum: 0xbde1 (correct)
Session Initiation Protocol
     Request-Line: BYE sip:10.1.6.5:60324 SIP/2.0
         Method: BYE
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.171:1571
         Max-Forwards: 70
         From: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP from address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         To: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP to address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         Call-ID: [email-masked]
         CSeq: 1 BYE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
    2993 
78.789133   202.125.84.171        10.1.6.5              SIP      Request: 
BYE sip:10.1.6.5:60324

Frame 2993 (375 bytes on wire, 375 bytes captured)
     Arrival Time: Dec 14, 2004 11:36:10.976091000
     Time delta from previous packet: 0.486770000 seconds
     Time since reference or first frame: 78.789133000 seconds
     Frame Number: 2993
     Packet Length: 375 bytes
     Capture Length: 375 bytes
Ethernet II, Src: 00:00:24:c2:01:f4, Dst: 00:50:fc:b1:ea:9d
     Destination: 00:50:fc:b1:ea:9d (10.1.6.5)
     Source: 00:00:24:c2:01:f4 (10.1.6.1)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
10.1.6.5 (10.1.6.5)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 361
     Identification: 0xd96d (55661)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x31e8 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 10.1.6.5 (10.1.6.5)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 1208 (1208)
     Source port: 1571 (1571)
     Destination port: 1208 (1208)
     Length: 341
     Checksum: 0xbde1 (correct)
Session Initiation Protocol
     Request-Line: BYE sip:10.1.6.5:60324 SIP/2.0
         Method: BYE
         Resent Packet: True
         Suspected resend of frame: 2978
     Message Header
         Via: SIP/2.0/UDP 202.125.84.171:1571
         Max-Forwards: 70
         From: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP from address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         To: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP to address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         Call-ID: [email-masked]
         CSeq: 1 BYE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
    2995 
79.313436   10.1.6.5              202.125.84.171        SIP      Status: 200 OK

Frame 2995 (341 bytes on wire, 341 bytes captured)
     Arrival Time: Dec 14, 2004 11:36:11.500394000
     Time delta from previous packet: 0.524303000 seconds
     Time since reference or first frame: 79.313436000 seconds
     Frame Number: 2995
     Packet Length: 341 bytes
     Capture Length: 341 bytes
Ethernet II, Src: 00:50:fc:b1:ea:9d, Dst: 00:00:24:c2:01:f4
     Destination: 00:00:24:c2:01:f4 (10.1.6.1)
     Source: 00:50:fc:b1:ea:9d (10.1.6.5)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 10.1.6.5 (10.1.6.5), Dst Addr: 202.125.84.171 
(202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 327
     Identification: 0xdf2a (57130)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x2b4d (correct)
     Source: 10.1.6.5 (10.1.6.5)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 1208 (1208), Dst Port: 1571 (1571)
     Source port: 1208 (1208)
     Destination port: 1571 (1571)
     Length: 307
     Checksum: 0x5406 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.171:1571
         From: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP from address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         To: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP to address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         Call-ID: [email-masked]
         CSeq: 1 BYE
         User-Agent: RTC/1.2
         Content-Length: 0

Capture At the External Machine (Host 2)

No.     Time        Source                Destination           Protocol Info
     109 
31.434557   202.125.84.170        202.125.84.171        SIP/SDP  Request: 
INVITE sip:[email-masked]:1571, with session description

Frame 109 (1112 bytes on wire, 1112 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:19.153166000
     Time delta from previous packet: 31.434557000 seconds
     Time since reference or first frame: 31.434557000 seconds
     Frame Number: 109
     Packet Length: 1112 bytes
     Capture Length: 1112 bytes
Ethernet II, Src: 00:00:24:c2:01:f5, Dst: 00:40:f4:3d:66:5f
     Destination: 00:40:f4:3d:66:5f (202.125.84.171)
     Source: 00:00:24:c2:01:f5 (202.125.84.170)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.170 (202.125.84.170), Dst Addr: 
202.125.84.171 (202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1098
     Identification: 0xd3d4 (54228)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x257e (correct)
     Source: 202.125.84.170 (202.125.84.170)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 60323 (60323), Dst Port: 1571 (1571)
     Source port: 60323 (60323)
     Destination port: 1571 (1571)
     Length: 1078
     Checksum: 0x899c (correct)
Session Initiation Protocol
     Request-Line: INVITE sip:[email-masked]:1571 SIP/2.0
         Method: INVITE
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>
             SIP to address: sip:[email-masked]
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.170:60324>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 681
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.170
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.170
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.170
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.170
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 60326 RTP/AVP 
97 111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 60326
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:aINkrSXVFlOw/LgTKp5bHe1D1a/vQi7wV59gwbXEtRY
                 Key Type: base64
                 Key Data: aINkrSXVFlOw/LgTKp5bHe1D1a/vQi7wV59gwbXEtRY
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 60328 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 60328
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:9X9PloS9X/sgFGWluGGzdFVMn9iEMyaOMVKenrIlfYw
                 Key Type: base64
                 Key Data: 9X9PloS9X/sgFGWluGGzdFVMn9iEMyaOMVKenrIlfYw
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     110 
31.440348   202.125.84.171        202.125.84.170        SIP      Status: 
100 Trying

Frame 110 (355 bytes on wire, 355 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:19.158957000
     Time delta from previous packet: 0.005791000 seconds
     Time since reference or first frame: 31.440348000 seconds
     Frame Number: 110
     Packet Length: 355 bytes
     Capture Length: 355 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 341
     Identification: 0xd91e (55582)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x2229 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 321
     Checksum: 0x2dd3 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 100 Trying
         Status-Code: 100
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     111 
31.440840   202.125.84.171        202.125.84.170        SIP      Status: 
180 Ringing

Frame 111 (356 bytes on wire, 356 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:19.159449000
     Time delta from previous packet: 0.000492000 seconds
     Time since reference or first frame: 31.440840000 seconds
     Frame Number: 111
     Packet Length: 356 bytes
     Capture Length: 356 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 342
     Identification: 0xd91f (55583)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x2227 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 322
     Checksum: 0xaef6 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 180 Ringing
         Status-Code: 180
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     113 
31.782481   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 113 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:19.501090000
     Time delta from previous packet: 0.341641000 seconds
     Time since reference or first frame: 31.782481000 seconds
     Frame Number: 113
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd920 (55584)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f3f (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     115 
32.271844   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 115 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:19.990453000
     Time delta from previous packet: 0.489363000 seconds
     Time since reference or first frame: 32.271844000 seconds
     Frame Number: 115
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd921 (55585)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f3e (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     164 
33.272848   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 164 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:20.991457000
     Time delta from previous packet: 1.001004000 seconds
     Time since reference or first frame: 33.272848000 seconds
     Frame Number: 164
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd923 (55587)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f3c (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     211 
34.117383   202.125.84.170        202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 211 (387 bytes on wire, 387 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:21.835992000
     Time delta from previous packet: 0.844535000 seconds
     Time since reference or first frame: 34.117383000 seconds
     Frame Number: 211
     Packet Length: 387 bytes
     Capture Length: 387 bytes
Ethernet II, Src: 00:00:24:c2:01:f5, Dst: 00:40:f4:3d:66:5f
     Destination: 00:40:f4:3d:66:5f (202.125.84.171)
     Source: 00:00:24:c2:01:f5 (202.125.84.170)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.170 (202.125.84.170), Dst Addr: 
202.125.84.171 (202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 373
     Identification: 0xd431 (54321)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x27f6 (correct)
     Source: 202.125.84.170 (202.125.84.170)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 60323 (60323), Dst Port: 1571 (1571)
     Source port: 60323 (60323)
     Destination port: 1571 (1571)
     Length: 353
     Checksum: 0xa19b (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     221 
34.247583   202.125.84.170        202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 221 (387 bytes on wire, 387 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:21.966192000
     Time delta from previous packet: 0.130200000 seconds
     Time since reference or first frame: 34.247583000 seconds
     Frame Number: 221
     Packet Length: 387 bytes
     Capture Length: 387 bytes
Ethernet II, Src: 00:00:24:c2:01:f5, Dst: 00:40:f4:3d:66:5f
     Destination: 00:40:f4:3d:66:5f (202.125.84.171)
     Source: 00:00:24:c2:01:f5 (202.125.84.170)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.170 (202.125.84.170), Dst Addr: 
202.125.84.171 (202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 373
     Identification: 0xd43a (54330)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x27ed (correct)
     Source: 202.125.84.170 (202.125.84.170)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 60323 (60323), Dst Port: 1571 (1571)
     Source port: 60323 (60323)
     Destination port: 1571 (1571)
     Length: 353
     Checksum: 0xa19b (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     223 
34.277092   202.125.84.170        202.125.84.171        SIP      Request: 
ACK sip:202.125.84.171:1571

Frame 223 (387 bytes on wire, 387 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:21.995701000
     Time delta from previous packet: 0.029509000 seconds
     Time since reference or first frame: 34.277092000 seconds
     Frame Number: 223
     Packet Length: 387 bytes
     Capture Length: 387 bytes
Ethernet II, Src: 00:00:24:c2:01:f5, Dst: 00:40:f4:3d:66:5f
     Destination: 00:40:f4:3d:66:5f (202.125.84.171)
     Source: 00:00:24:c2:01:f5 (202.125.84.170)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.170 (202.125.84.170), Dst Addr: 
202.125.84.171 (202.125.84.171)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 373
     Identification: 0xd43c (54332)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 127
     Protocol: UDP (0x11)
     Header checksum: 0x27eb (correct)
     Source: 202.125.84.170 (202.125.84.170)
     Destination: 202.125.84.171 (202.125.84.171)
User Datagram Protocol, Src Port: 60323 (60323), Dst Port: 1571 (1571)
     Source port: 60323 (60323)
     Destination port: 1571 (1571)
     Length: 353
     Checksum: 0xa19b (correct)
Session Initiation Protocol
     Request-Line: ACK sip:202.125.84.171:1571 SIP/2.0
         Method: ACK
         Resent Packet: False
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         Max-Forwards: 70
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 ACK
         User-Agent: RTC/1.2
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
     262 
35.272771   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 262 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:22.991380000
     Time delta from previous packet: 0.995679000 seconds
     Time since reference or first frame: 35.272771000 seconds
     Frame Number: 262
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd926 (55590)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f39 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     416 
39.270667   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 416 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:26.989276000
     Time delta from previous packet: 3.997896000 seconds
     Time since reference or first frame: 39.270667000 seconds
     Frame Number: 416
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd92a (55594)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f35 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
     586 
47.270357   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 586 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:34.988966000
     Time delta from previous packet: 7.999690000 seconds
     Time since reference or first frame: 47.270357000 seconds
     Frame Number: 586
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd92e (55598)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f31 (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

No.     Time        Source                Destination           Protocol Info
    1275 
63.270736   202.125.84.171        202.125.84.170        SIP/SDP  Status: 
200 OK, with session description

Frame 1275 (1099 bytes on wire, 1099 bytes captured)
     Arrival Time: Dec 14, 2004 11:35:50.989345000
     Time delta from previous packet: 16.000379000 seconds
     Time since reference or first frame: 63.270736000 seconds
     Frame Number: 1275
     Packet Length: 1099 bytes
     Capture Length: 1099 bytes
Ethernet II, Src: 00:40:f4:3d:66:5f, Dst: 00:00:24:c2:01:f5
     Destination: 00:00:24:c2:01:f5 (202.125.84.170)
     Source: 00:40:f4:3d:66:5f (202.125.84.171)
     Type: IP (0x0800)
Internet Protocol, Src Addr: 202.125.84.171 (202.125.84.171), Dst Addr: 
202.125.84.170 (202.125.84.170)
     Version: 4
     Header length: 20 bytes
     Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
         0000 00.. = Differentiated Services Codepoint: Default (0x00)
         .... ..0. = ECN-Capable Transport (ECT): 0
         .... ...0 = ECN-CE: 0
     Total Length: 1085
     Identification: 0xd945 (55621)
     Flags: 0x00
         0... = Reserved bit: Not set
         .0.. = Don't fragment: Not set
         ..0. = More fragments: Not set
     Fragment offset: 0
     Time to live: 128
     Protocol: UDP (0x11)
     Header checksum: 0x1f1a (correct)
     Source: 202.125.84.171 (202.125.84.171)
     Destination: 202.125.84.170 (202.125.84.170)
User Datagram Protocol, Src Port: 1571 (1571), Dst Port: 60324 (60324)
     Source port: 1571 (1571)
     Destination port: 60324 (60324)
     Length: 1065
     Checksum: 0x9693 (correct)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
         Status-Code: 200
         Resent Packet: True
         Suspected resend of frame: 113
     Message Header
         Via: SIP/2.0/UDP 202.125.84.170:60324
         From: "intoalg2" <sip:intoalg2>;tag=3a35760de42649f28e341a80a9edf4f7
             SIP Display info: "intoalg2"
             SIP from address: sip:intoalg2
             SIP tag: 3a35760de42649f28e341a80a9edf4f7
         To: <sip:[email-masked]>;tag=f025608bd41248b48746df9fd86f6fc9
             SIP to address: sip:[email-masked]
             SIP tag: f025608bd41248b48746df9fd86f6fc9
         Call-ID: [email-masked]
         CSeq: 1 INVITE
         Contact: <sip:202.125.84.171:1571>
         User-Agent: RTC/1.2
         Content-Type: application/sdp
         Content-Length: 679
     Message body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 0 0 IN IP4 202.125.84.171
                 Owner Username: -
                 Session ID: 0
                 Session Version: 0
                 Owner Network Type: IN
                 Owner Address Type: IP4
                 Owner Address: 202.125.84.171
             Session Name (s): session
             Connection Information (c): IN IP4 202.125.84.171
                 Connection Network Type: IN
                 Connection Address Type: IP4
                 Connection Address: 202.125.84.171
             Bandwidth Information (b): CT:1000
                 Bandwidth Modifier: CT
                 Bandwidth Value: 1000
             Time Description, active time (t): 0 0
                 Session Start Time: 0
                 Session Stop Time: 0
             Media Description, name and address (m): audio 1572 RTP/AVP 97 
111 112 6 0 8 4 5 3 101
                 Media Type: audio
                 Media Port: 1572
                 Media Proto: RTP/AVP
                 Media Format: 97
                 Media Format: 111
                 Media Format: 112
                 Media Format: DVI4 16000 samples/s
                 Media Format: ITU-T G.711 PCMU
                 Media Format: ITU-T G.711 PCMA
                 Media Format: ITU-T G.723
                 Media Format: DVI4 8000 samples/s
                 Media Format: GSM 06.10
                 Media Format: 101
             Encryption Key (k): 
base64:9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
                 Key Type: base64
                 Key Data: 9ELIKPMLAfwRQJG49w4Dmo+nh9CBk1Ulq1sGJeQnsVE
             Media Attribute (a): rtpmap:97 red/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 97 red/8000
             Media Attribute (a): rtpmap:111 SIREN/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 111 SIREN/16000
             Media Attribute (a): fmtp:111 bitrate=16000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 111 bitrate=16000
             Media Attribute (a): rtpmap:112 G7221/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 112 G7221/16000
             Media Attribute (a): fmtp:112 bitrate=24000
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 112 bitrate=24000
             Media Attribute (a): rtpmap:6 DVI4/16000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 6 DVI4/16000
             Media Attribute (a): rtpmap:0 PCMU/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 8 PCMA/8000
             Media Attribute (a): rtpmap:4 G723/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 4 G723/8000
             Media Attribute (a): rtpmap:5 DVI4/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 5 DVI4/8000
             Media Attribute (a): rtpmap:3 GSM/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 3 GSM/8000
             Media Attribute (a): rtpmap:101 telephone-event/8000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-16
                 Media Attribute Fieldname: fmtp
                 Media Attribute Value: 101 0-16
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional
             Media Description, name and address (m): video 1574 RTP/AVP 34 31
                 Media Type: video
                 Media Port: 1574
                 Media Proto: RTP/AVP
                 Media Format: ITU-T H.263
                 Media Format: ITU-T H.261
             Encryption Key (k): 
base64:IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
                 Key Type: base64
                 Key Data: IuScUg0Dn3LfdHEvyrzZ9wE0wB36+3KMZ1c3HjrWeXg
             Media Attribute (a): rtpmap:34 H263/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 34 H263/90000
             Media Attribute (a): rtpmap:31 H261/90000
                 Media Attribute Fieldname: rtpmap
                 Media Attribute Value: 31 H261/90000
             Media Attribute (a): encryption:optional
                 Media Attribute Fieldname: encryption
                 Media Attribute Value: optional

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Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use [email-masked] for questions on current sip
Use [email-masked] for new developments on the application of sip