[Asterisk-Users] Teliax users, g729 question

[Rich Adamson]

> > > > I am using Teliax to terminate my calls, and I have 3 licenses' for
> > > > g729 from Digium. "show translations" verifies that the registration
> > > > took place.
> > > >
> > > > When I place a call, having "allow=g729" as the only allow option in
> > > > iax.conf, I get the following error:
> > > >
> > > > WARNING[361]: chan_iax2.c:6017 socket_read: Call rejected by
> > > > 208.139.204.228: Unable to negotiate codec
> > > >
> > > > If I place a call with g726 as the only allow line, then the call
> > > > completes as desired. I realize I could just use that (g726), but
> > > > it seems odd that I cannot connect using g729 when both of us support
> > > > it.
> > > >
> > > > I have checked, double checked, triple checked my account with teliax,
> > > > and made sure that the g729 box is checked for both sip and iax. I
> > > > have also contacted support, they have responded, but not with
> > > > anything that would be considered helpful.
> > > >
> > > > My question then to you all is this: Are you connecting to Teliax via
> > > > g729? if so, how... what are you doing that I might be missing?
> > > >
> > > > Your guidance will be most appreciated.
> > >
> > > I just tried g729 with teliax this morning. It worked fine in both
> > > directions using three different did's from them.  I did have one
> > > test call where audio was one way though.
> > >
> > > During those test calls I watched the CLI and the calls definitely
> > > were g729 without a doubt. I used the exact same teliax server you
> > > show above.
> > >
> > > I'm running cvs-head from yesterday.
> > >
> > > If you do a iax2 debug, you should be able to spot which system is
> > > not compat with g729. That should lead you into diagnosing the
> > > problem a little deeper.
> > >
> > 
> > Rich,
> > 
> > Thanks for taking the time to check and respond, and for your advise.
> > 
> > I did as you said, and here is the output:
> > 
> > ============================
> > pbx*CLI> iax2 debug
> > IAX2 Debugging Enabled
> > Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: NEW
> >    Timestamp: 00016ms  SCall: 00002  DCall: 00000 [208.139.204.228:4569]
> >    VERSION         : 2
> >    CALLED NUMBER   : 1917XXXXXXXX   (I XXX out the number)
> >    CODEC_PREFS     : (g729)
> >    CALLING NUMBER  : 4401
> >    CALLING PRESNTN : 0
> >    CALLING TYPEOFN : 0
> >    CALLING TRANSIT : 0
> >    CALLING NAME    : John Reynolds
> >    LANGUAGE        : en
> >    USERNAME        : reynj
> >    FORMAT          : 256
> >    CAPABILITY      : 63744
> >    ADSICPE         : 2
> >    DATE TIME       : 189432385
> > 
> > Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: AUTHREQ
> >    Timestamp: 00003ms  SCall: 00073  DCall: 00002 [208.139.204.228:4569]
> >    AUTHMETHODS     : 2
> >    CHALLENGE       : 303570605
> >    USERNAME        : reynj
> > 
> > Tx-Frame Retry[000] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: AUTHREP
> >    Timestamp: 00080ms  SCall: 00002  DCall: 00073 [208.139.204.228:4569]
> >    MD5 RESULT      : 6006ef53daa295d58f5292837a4edb60
> > 
> > Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: REJECT
> >    Timestamp: 00060ms  SCall: 00073  DCall: 00002 [208.139.204.228:4569]
> >    CAUSE           : Unable to negotiate codec
> >    CAUSE CODE      : 58
> > 
> > Oct 10 16:18:03 WARNING[364]: chan_iax2.c:6017 socket_read: Call
> > rejected by 208.139.204.228: Unable to negotiate codec
> > =================
> > 
> > I am I wrong in thinking that I my call is trying to connect via g729,
> > but that Teliax is rejecting it?
 
Okay, in the above, you transmit a packet that has FORMAT : 256 which
is g729 (see 'show codecs'). After the challenge/response, they send you
'REJECT, Unable to negotiate codec'. So, yes, teliax is rejecting your
call due to the lack of g729 support on their side.
 
I was just going to log into their web site to check my settings, and 
their web server is broken right now. I've also been experiencing many
errors with teliax.com in the form of no call progress when dialing any
call. So, they are either having serious problems, went broke, or 
something.

On the g729 issue, the folks at teliax.com would have had to either purchase
codecs from digium, or, installed an illegal codec. Presumably, if they 
installed xx number of g729 licenses and those licenses were already
consumed, would they reject the next call (like above)? Probably.

So, can't tell if they simply ran out of licenses, have a configuration
problem for your account, or their system is simply broken. In any case,
you can't do anything to fix it other then to open a problem case with
them or use a different codec. Gsm is pretty good. :)

Rich