[asterisk-users] My G729 problem re-visited

[Scott Moseman]

Gateway sends Asterisk an INVITE (using g729)
Asterisk sends Phone an INVITE (using g711 or g729)
Phone sends Asterisk an OK (using g711)
Asterisk sends Gateway an OK (with no RTP choice)
Gateways ends the conversation

I can setup the Phone to use g729 and it will reply with an OK for
g729, but the OK to the Gateway will still stay empty.  Only when I
enable g711 on the Gateway will this work.  I have experienced this on
2 different models of gateways so far.

I included my config for both the Gateway and the Phone in my original
message, hoping that maybe I was configuring the Gateway wrong in
Asterisk?  But no one has said anything so I'm assuming its okay.

Phone (g729) to Phone (g729) works
Phone (anything) to Gateway (g711) works
Phone (anything) to Gateway (g729) does NOT work

I'm licensed for g729 (although I'm told I should not need it for pass
through).  And it will transcode when the phone is g729 and the
gateway is g711.  But for whatever reason I can't use g729 on the
gateway side of the calling process?

Thanks,
Scott



On 10/12/07, Power, Paul C. <ppower at oneeighty.com> wrote:
>
> Is the call being dropped or is Asterisk takng a core dump?
>
> I have core dump issues with g729 and asterisk 1.4.11, but my set up is
> a little different than yours...
>
>
> > -----Original Message-----
> > From: Scott Moseman
> > Sent: Friday, October 12, 2007 10:22 AM
> > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > Subject: Re: [asterisk-users] My G729 problem re-visited
> >
> > No ideas on this one from anyone?  I suppose I'm going to
> > need to pay for some Digium support because this is a really
> > unusual problem.
> > Does anyone else have a gateway that speaks g729 to Asterisk
> > and works?  For whatever reason, Asterisk refuses to reply
> > back to any of my gateways using g729.  Phone (g729) to phone
> > (g729) works.  Phone
> > (g729) to Asterisk to gateway (g711) works.  But attempt g729
> > between Asterisk and a gateway and it fails -- every time.
> > Asterisk responds to the gateway but never includes any
> > codecs in the packet, unless it's g711.  My configurations
> > are shown below.
> >
> > Thanks,
> > Scott
> >
> >
> > On 9/26/07, Scott Moseman <scmoseman at gmail.com> wrote:
> > >
> > > Ok, I built a test system to duplicate my problem and
> > provide myself a
> > > platform that I can mess around with to try and break any features.
> > > My problem is G729 pass-through from a gateway to a phone.
> > I think I
> > > even have transcoding working, which makes me more confused
> > on what's
> > > wrong with my pass-through. It must be a configuration issue.
> > >
> > > The basics...
> > >
> > > *CLI> core show version
> > > Asterisk 1.4.11 built by root @ fwd-tst02 on a i686 running Linux
> > >
> > > *CLI> show modules like 723
> > > Module Description Use Count
> > > codec_g723.so G.723.1 Coder/Decoder 0
> > > format_g723.so G.723.1 Simple Timestamp File Format 0
> > >
> > > *CLI> show modules like 729
> > > Module Description Use Count
> > > codec_g729.so G.729 Coder/Decoder 0
> > > format_g729.so Raw G729 data 0
> > >
> > > *CLI> show translation
> > > [truncated]
> > > g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex
> > ilbc g726 g722
> > > ulaw 5 2 - 1 2 2 1 3 7 - 11 2 - alaw 5 2 1 - 2 2 1 3 7 - 11 2 -
> > > g729 5 2 2 2 2 2 1 3 - - 11 2 -
> > >
> > > The configuration...
> > >
> > > [gateway]
> > > type=friend
> > > host=gateway
> > > context=default-inbound
> > > disallow=all
> > > allow=g729
> > >
> > > [phone]
> > > type=friend
> > > context=sip
> > > host=dynamic
> > > username=phone
> > > secret=scott
> > > dtmfmode=RFC2833
> > > disallow=all
> > > allow=g729
> > > callerid=Scott
> > > qualify=yes
> > > canreinvite=no
> > >
> > > exten => 1266,1,Dial(SIP/[number],30,t) exten => 1266,2,Congestion
> > >
> > > exten => 1266,1,Dial(SIP/[number],30)
> > > exten => 1266,2,Congestion
> > >
> > > (The same results using both of the above dialplans...)
> > >
> > > The environment...
> > >
> > > PSTN -> Gateway -> Asterisk -> Phone
> > >
> > > What I'm seeing works...
> > >
> > > With the gateway setup to send both G711 and G729, it sends
> > an INVITE
> > > which includes both G711 and G729 codecs. Asterisk sends an
> > INVITE to
> > > my phone with only G729. The call is made and there's a
> > conversation
> > > in G711 with the gateway and G729 with the phone. I assume
> > this means
> > > Asterisk is transcoding.
> > >
> > > What I"m seeing fails...
> > >
> > > With the gateway setup to send only G729, it sends an INVITE to
> > > Asterisk which includes only G729. Asterisk send an INVITE to the
> > > phone using G729, too. The 200 OK from the phone to the Asterisk
> > > includes G729. The 200 OK going from Asterisk to the
> > gateway doesn't
> > > include ANY codec. The call is dropped the moment I pickup
> > the phone
> > > to answer the call.
> > >
> > > My question...
> > >
> > > Why does Asterisk not want to respond to my gateway in G729?
> > > Even if the gateway requests it, Asterisk seems to just ignore it.
> > > From the transcoding call, and phone to phone G729 calls, I
> > have proof
> > > that Asterisk knows how to handle G729 calls.
> > >
> > > Where do I go from here???
> > >
> > > Thanks,
> > > Scott
> > >