[Asterisk-Users] RE: Teliax - Codec Preference effective?

[tim panton]

Brent Torrenga wrote:
> Thanks for your input, everyone, but I still think it is on Teliax's end...
> I will present our collective thoughts to their tech.
> 
> Kevin,
> I am using IAX. When I turn on IAX debug, I get:
> 
> ------SNIP CLI OUTPUT------
> 
>      -- Executing Dial("SIP/Brent_ring-bcf7", "IAX2/teliax/18005558355") in
> new
> stack
>      -- Called teliax/18005558355
>  Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: NEW
>     Timestamp: 00007ms  SCall: 16384  DCall: 00000 [208.139.204.228:4569]
>     VERSION         : 2
>     CALLED NUMBER   : 18005558355
>     CODEC_PREFS     : (g726)
>     CALLING NUMBER  : 2198368918
>     CALLING PRESNTN : 0
>     CALLING TYPEOFN : 0
>     CALLING TRANSIT : 0
>     CALLING NAME    : Torrenga Engineering
>     LANGUAGE        : en
>     USERNAME        : (REDACTED-BY-THE-EDITOR)
>     FORMAT          : 16
>     CAPABILITY      : 63504
>     ADSICPE         : 2
>     DATE TIME       : 2006-02-01  08:20:42
> 
> 
> Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass:
> AUTHREQ
>     Timestamp: 00002ms  SCall: 00237  DCall: 16384 [208.139.204.228:4569]
>     AUTHMETHODS     : (REDACTED-BY-THE-EDITOR)
>     CHALLENGE       : (REDACTED-BY-THE-EDITOR)
>     USERNAME        : (REDACTED-BY-THE-EDITOR)
> 
>  Tx-Frame Retry[000] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass:
> AUTHREP
>     Timestamp: 00255ms  SCall: 16384  DCall: 00237 [208.139.204.228:4569]
>     MD5 RESULT      : (REDACTED-BY-THE-EDITOR)
> 
> 
> Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass:
> REJECT
>     Timestamp: 00133ms  SCall: 00237  DCall: 16384 [208.139.204.228:4569]
>     CAUSE           : Unable to negotiate codec
>     CAUSE CODE      : 58
> 
>  Feb  1 08:20:43 WARNING[4710]: chan_iax2.c:6973 socket_read:  Call rejected
> by
> 208.139.204.228: Unable to negotiate codec
>  Tx-Frame Retry[-01] -- OSeqno: 002 ISeqno: 002 Type: IAX     Subclass: ACK
> 
> a   Timestamp: 00133ms  SCall: 16384  DCall: 00237 [208.139.204.228:4569]
>      -- Hungup 'IAX2/teliax-16384'
>    == Everyone is busy/congested at this time (1:0/0/1)
>      -- Executing Playback("SIP/Brent_ring-bcf7",
> "all-outgoing-lines-unavailabl
> e") in new stack
>      -- Playing 'all-outgoing-lines-unavailable' (language 'en')
> 
>   == Spawn extension (internal, *83518005558355, 3) exited non-zero on
> 'SIP/Bren
> t_ring-bcf7'
> 
> ------SNIP CLI OUTPUT------
> 
> I don't see any codec negotiation stuff other than my end requesting g726...
> The only "effective" codec I get is GSM, which is my old setting on the
> Teliax site.
> 
> 

IAX doesn't exactly do negotiation per se.
In the first packet you send you say CODEC_PREFS = g726
and FORMAT = 16
This means that you are _only_ prepared to do g726
(Thats a Six not a Nine by the way)

They reject the call because they don't want to do 726 and
you didn't offer anything else.

Tim.