Presence and IntComm WG

[Steve Blair <>]

Xiaotao Wu wrote:

> > >   Yes. Calling 
> > > sip:
> > >  gives me the Yale Employee Weather
> > > Information line. Calling 
> > > sip:
> > >  I get the MIT "University is
> > > open and operating as usual" hotline.   The MIT address however seems
> > > to loose audio after the greeting plays for a few seconds. Right about the
> > > time the woman begins to give the emergency web site URL.
> > >      
> > This is with the version that Xiaotao released last night?  Windows?
> >
> > I can call my Pingtel phone 
> > <sip:>
> >  and that's fine but I
> >    
>
> Dennis,
>
> I just called the 21232 number, I can hear you. (sorry, I forgot to
> connect the mic to my machine so I disconnected the call.)
> I also tried  
> sip:,
>  it gave me 200 ok, but it send BYE to
> me immediately. I then tried 
> sip:,
>  it gives me 500 error.
>
> I think the problem is at the Cisco gateway for GSM codec handling.
> For the new version, I set GSM as the default codec. For Pingtel phone, it
> does not support GSM codec, so, it use g.711 in its 200 response, (sipc
> provides choices, 3 (gsm) and 0 (g711)) and sipc talks to Pingtel phone
> in g.711, it works.
>
> For Cisco gateway (both 27669 and 37669 Cisco-gateway), both 27669 and
> 37669 tried to use GSM codec, however, both of them cannot handle the GSM
> codec used by sipc.
>
>  
What is the GSM codec used by SIPc? I have GSMEFR 12200 bps and GSMFR 
13200 bps
as valid codecs in my gateway.

-Steve

> I tried to change back to use g.711 as the default codec, both 27669 and
> 37669 works.
>
> -Xiaotao
>
>  
>
> > can't seem to call through the MIT or Yale gateways.  I dunno...
> >
> >                    Dennis
> >
> >    

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