Subject: [AVT] RTCP when remote member SDP is not available

From: Giuseppe Giordano <[email-masked]>
Date: Wed, 26 Mar 2003 17:07:30 +0100

Hi, all
I have a doubt about RTCP.
Rfc 1889 says that RTCP reports should be sent even if
a endpoint is receive only, or sendonly, that is in the case of a
monodirectional
connection.
But,
if I created a connection between 2 media gateways (unicast RTP session)
by means of
MGCP protocol in the following way:

1) CRCX message  to the first gateway (endpoint A)
cx mode = rcvonly
remote session description: absent

2) Answer to the CRCX message with endpoin A local session description

3) CRCX message to the second gateway (endpoint B)
cx mode = sendonly
remote session description: present

In this case, endpoint A must send RTCP reports to B?
Endpoint A receives RTP packets from B. Can it use the RTP sender IP
address
to deliver RTCP packets?

Thanks for the attention,
best regards,

Giuseppe Giordano

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