[Asterisk-Users] Unable to call certain 800 numbers through Teliax

[Rich Adamson]

> We are unable to call certain 800 numbers through Teliax but I thought I would post this here 
and see if anyone else had the same problem with
> either Teliax or other carriers.
> 
> The 800 numbers causing problems pick-up the call right away and are in the US - American 
Airlines (8004337300) and Staples (800-378-2753) -
> we can call many other 800 numbers just fine.
> 
> Our asterisk setup has a 4-port digium analog card as well as a Teliax account, currently 
connected via IAX2. We are able to call the
> 800-numbers above through the digium card but not through Teliax. We have also tried calling 
the numbers with Asterisk and SIP through
> Teliax with no-luck either. We have also tried using several IAX soft-phones (using iaxComm) 
directly with Teliax account (no Asterisk) and
> have the same problem.
> 
> The *only* way that we have been able to call these numbers through Teliax is to directly 
X-Lite directly connected to Teliax through SIP - so
> Teliax claims that it is not a problem with their service, but with Asterisk.
> 
> In examining the asterisk log output it appears that the channel is never answered and 
continues to ring indefinately. My guess is that there is a
> timing issue with the signals being sent and recieved by Asterisk and Teliax and that the 
"answered" is probably being transmitted before the
> "ringing" signal and is therefore being ignored by asterisk and iaxComm.
> 
> If anyone could give this a shot and see what works or doesn't work that would be great.
> 
> We have reproduced this with Asterisk 1.0.7 and 1.0.9.

Well, using cvs-head from today (8:30pm cdt) on a FC3 box, and calling 
American Airlines:
- calls via teliax iax2 completed normal
- calls via diamondcard iax2 completed normal
- calls via NuFone iax2 failed ("Sorry your call did not go through...")
- calls via pstn (TDM04b) completed normal

All calls originated on a C7960 sip phone.