[asterisk-users] Cisco 7961G

[Greg Oliver]

On Fri, 2007-06-01 at 21:28 +0200, Pavel Jezek wrote:
> we are using 7941 with sip v8.2(2)SR3, it working quite well  ;-)
> 
> 
> Eric Lubow wrote:
> > All,
> >
> >    I am having a lot of trouble with the Cisco 7961G phones.  I have
> > managed to get them up and running with Asterisk to the point where I
> > can get incoming calls and make outgoing calls.  The problem is when I
> > make outgoing calls or extension to extension calls, the calls die after
> > 20 seconds.  I have google'd around and came up with little that is of
> > help.  The firmware version I am using on the phone is 8.0.4SR1.
> >
> >    I have tried tcpdumping the conversation and I see that the phone
> > doesn't send the SIP/SDP ACK packet back to the remote end.  Sometimes
> > it does, but that's a rarity.  There doesn't seem to be any rhyme or
> > reason as to when it will send the SIP/SDP ACK.  All I see is the
> > following before the phone hangs up at 20 seconds (201 is the phone and
> > 205 is the Asterisk Box):
> >
> > 10.230103 192.168.0.205 -> 192.168.0.201 SIP/SDP Status: 200 OK, with
> > session description
> >
> >    Is there a newer version of the firmware that fixes this?  Is there a
> > setting in Asterisk that can fix this?  Any help is greatly appreciated.
> > Thanks.
> >
> > Eric
> >
Anything older than 8.0.4SR2 is asking for grief.  You cannot even
download older from Cisco's website anymore.  Those were their
CallManager "transitional" loads from SCCP -> SIP that were riddled with
bugs.

-Greg