asterisk users - Jul 2004 - SIP client to IAXTel 800/888/877/866 dialing thru Asterisk

Through my Asterisk server, I am trying to use IAXTel to dial 800-type
numbers (yes, I know I can do the same thing with FWD and others via
SIP, but I wanted to play with IAX a little). It appears I'm running
into some sort of a codec mismatch or something because it's not working
right. The SIP client is a SPA-3000. 

In iax.conf, I have something like the following:

[General]
disallow=all
allow=ilbc
allow=adpcm
allow=g726
allow=gsm
allow=ulaw
allow=alaw

register => user:pass@iaxtel.com

[iaxtel]
type=friend
host=iaxtel.com
secret=password
auth=rsa
context=from-iaxtel
inkeys=iaxtel

The sip.conf has similar settings in the General section related to
codecs. The codec on the SPA-3000 is forced to G.711 (the only thing it
talks to directly is my Asterisk server). 

When I make a call to a number on IAXTel (e.g. 1-700-VOXILLA), it works
fine. If I try and call an 800 number, I don't get any audio. However,
it appears the IAX side of the equation isn't negotiating a codec right.
Furthermore, the SIP side is choosing the wrong codec (though I've tried
putting allow=ulaw first and it still didn't help)

grover*CLI> iax2 show channels
Peer             Username    ID (Lo/Rem)  Seq (Tx/Rx)  Lag      Jitter 
JitBuf  Format
69.73.19.178     (None)      00003/00000  00001/00000  00000ms  0000ms 
0000ms  UNKN
69.73.19.178     phoneboy    00005/00102  00019/00017  00099ms  0000ms 
0010ms  UNKN
2 active IAX channel(s)
grover*CLI> sip show channels
Peer             User/ANR    Call ID      Seq (Tx/Rx)   Format
10.0.0.250       53          2b890d18-49  00101/00103   ILBC
1 active SIP channel(s)

Is there a problem with iaxtel? Any ideas?

Asterisk CVS-HEAD-07/06/04-01:33:49 built by root@grover on a i686
running Linux

-- PhoneBoy

On Mon, 12 Jul 2004 11:42:57 -0700, Dameon D. Welch-Abernathy
<dwelch@phoneboy.com> wrote:
> Through my Asterisk server, I am trying to use IAXTel to dial 800-type
> numbers (yes, I know I can do the same thing with FWD and others via
> SIP, but I wanted to play with IAX a little). It appears I'm running
> into some sort of a codec mismatch or something because it's not
working
> right. The SIP client is a SPA-3000.
> 
Phoneboy

IAXcomm use gsm only that may help

Jason