Presence and IntComm WG

[Xiaotao Wu <>]

On Thu, 15 Apr 2004, Dennis Baron wrote:

>
> > What is the GSM codec used by SIPc? I have GSMEFR 12200 bps and GSMFR
> > 13200 bps
> > as valid codecs in my gateway.
>
> This is what I have configured in the MIT gateway:
>
>      voice class codec 1
>       codec preference 1 g711ulaw
>       codec preference 2 g711alaw
>       codec preference 3 g729br8

In SDP of the 183 response, seems the gateway allows GSM, '3' is in the
'm' line.

v=0
o=CiscoSystemsSIP-GW-UserAgent 6843 5851 IN IP4 18.162.0.25
s=SIP Call
c=IN IP4 18.162.0.25
t=0 0
m=audio 17730 RTP/AVP 3
c=IN IP4 18.162.0.25

-Xiaotao

>
> Not sure why it would be agreeing to GSM - maybe another Cisco bug?
> I'm running:
>
>  IOS (tm) C2600 Software (C2600-J1S3-M), Version 12.3(6a), RELEASE SOFTWARE 
> (fc4)
>
> Maybe we have to choose between GSM and SIP.edu compatibility?
>
>                Dennis
>