Hi Lennox I am trying with just this email and even like this I can get any 
feedback, and I can´t see the info in the list.
Thanks for any feedback.

Hi fellows,

I am having the following issue with a peer carriers conected to my GW.
The scenario is the following, a call with a Invite which header 100rel, then 
the carrier response with 183 session progress and 180 Ringing,
I was reading the RFC3262 and I am not pretty sure of the following:
1-Is strictly necesary that GW send a PRACK messages of the 180, before send 
any other messages in this case a UPDATE?
2- Could be that our GW is sending this UPDATE messages cause the peer is 
sending us in the 183 SDP Media Attibute information the Media Format value = 
18 like [Unknown]?

Guillermo L. Zuniga C.
Support Engineer & VoIP Specialist | e-mail:guillermo.zun...@cwpanama.com
Fix Phone: +5078307365 | MSN IM: g...@hotmail.com<mailto:g...@hotmail.com>
Mobile: +507 66700481
www.cwpanama.com<http://www.cwpanama.com/>




Guillermo Zuniga
Especialista de Soporte Técnico
Gerencia de Soporte Técnico

Tel:    +507 263-6671
Cel:    +507 6670-0481
Fax:    +507 265-3295
Email:  guillermo.zun...@cwpanama.com

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