Subject: Re: [Sigtran] Resetting conegestion level

From: [email-masked]
Date: Fri, 5 Apr 2002 18:59:58 +0530

Hi
   I have a query regarding Section 4.5.1 It says "DUNA, DAVA, SCON, and DRST
messages may be sent sequentially and processed at the receiver in the order
sent.
 Sequencing is not required for the DUPU or DAUD messages, which MAY be sent
unsequenced"

  About what kind of sequencing are we talking here? Does it give the specific
order in which these messages should go (although it does not seem so and
probably should not be so since Sec 4.5.3 says "the SGP MUST additionally r
espond with an SCON message before the DAVA or DRST message.") or response for
DAUD and sending of DAVA/DUNA/SCON etc when MTP-RESUME/PAUSE/STATUS are received
at NIF are two different cases to be considered.

 Kindly let me know.

Thanks
Sarika

"Brian F. G. Bidulock" <[email-masked]> on 04/05/2002 03:43:59 PM

Please respond to [email-masked]

To:   Sripriya Narayanan <[email-masked]>
cc:   [email-masked] (bcc: Sarika Gupta/HSS)

Subject:  Re: [Sigtran] Resetting conegestion level

Sripriya,

When not in response to DAUD, SCON and DAVA are
sent per Section 4.5.1.  When SCON and DAVA are
sent, therefore depends on the protocol variant
at the SG, an precisely correspond to the
MTP-RESUME and MTP-STATUS primitives expected
at the ASP.

--brian

Sripriya Narayanan wrote:                     (Fri, 05 Apr 2002 15:12:04)
>
>    Hello list,
>
>        When the M3ua at MGC gets SCON followed by a DAVA, it means the
>    point code is congested, although available.
>
>    Incase the congestion level has reduced, does the SG send DAVA or SCON
>    with level "0" or both?
>
>        Incase SG sends DAVA, how is the ASP supposed to identify if it is
>    a DAVA resetting the congestion level or it is a DAVA immediately
>    following SCON conveying that the point code is congested although
>    available?
>
>
>
>    Regards
>
>    Sripriya

--
Brian F. G. Bidulock
[email-masked]
http://www.openss7.org/

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