Turns out my VoIP provider made a booh-booh... ;-)
Evert Meulie wrote:
> Hi all!
>
> Quite a mystery. The following happened when I was on holiday, and no one
> else has changed any configs of either Asterisk or the Cisco's in the
> building...
>
> The situation: Incoming works fine on all phones. Outgoing only works from
> non-Cisco phones. When calling from a Cisco phone to an external phone, all
> the Cisco-user hears is a ticking crackle and
> after about a minute the phone disconnects.
>
> A 'sip show channels' reveals the following:
>
> Peer User/ANR Call ID Seq (Tx/Rx) Format
> [VoIP-provider] [ext. number dialed] 5b1fe97c04d 00103/00000 g729
> [IP of Cisco phone] [ID of Cisco] 0002b9a7-4b 00102/00102 ulaw
> 2 active SIP channel(s)
>
> Here g729 pops up, even though I have configured [VoIP-provider] to only
> allow/use ulaw/alaw.
>
>
> asterisk -vvv shows:
>
>
> -- Executing Dial("SIP/[ID of Cisco]-4663", "SIP/[VoIP-provider]/[ext.
> number dialed]") in new stack
> -- Called [VoIP-provider]/[ext. number dialed]
> -- SIP/[VoIP-provider]-77a8 is ringing
> -- SIP/[VoIP-provider]-77a8 answered SIP/[ID of Cisco]-4663
> -- Attempting native bridge of SIP/[ID of Cisco]-4663 and
> SIP/[VoIP-provider]-77a8
> 2005-07-13 10:20:48 NOTICE[23276]: chan_sip.c:2792 process_sdp: No compatible
> codecs!
> 2005-07-13 10:20:48 NOTICE[23280]: channel.c:1736 ast_set_read_format: Unable
> to find a path from g729 to ulaw
> 2005-07-13 10:20:48 NOTICE[23280]: channel.c:1703 ast_set_write_format:
> Unable to find a path from alaw to g729
> 2005-07-13 10:20:48 WARNING[23280]: chan_sip.c:1836 sip_write: Asked to
> transmit frame type 8, while native formats is 256 (read/write = 4/8)
> 2005-07-13 10:20:48 WARNING[23280]: chan_sip.c:1836 sip_write: Asked to
> transmit frame type 8, while native formats is 256 (read/write = 4/8)
> 2005-07-13 10:20:49 WARNING[23280]: chan_sip.c:1836 sip_write: Asked to
> transmit frame type 8, while native formats is 256 (read/write = 4/8)
> 2005-07-13 10:20:49 NOTICE[23276]: chan_sip.c:2792 process_sdp: No compatible
> codecs!
>
>
>
> I have in my sip.conf in the [general] section the following:
> disallow=all
> allow=ulaw
> allow=alaw
>
> and no allow/disallows at the phones themselves.
>
>
> This used to work just fine... What could have happened...?
>
>
>
> Regards,
> Evert
>
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