[asterisk-users] Asterisk to Cisco 2600 GW DTMF Not Working

[JR Richardson]

Hi All,

I have Asterisk 1.2.9.1 sending SIP calls to a Cisco 2620XM Router
with a PRI card in it, handing off to a PBX and vise verse.  Calls in
and out are working fine except for DTMF from Asterisk to the 2600.
DTMF from the 2600 to Asterisk is fine.

Here are the Asterisk console warnings I get when I send DTMF from
Asterisk to the 2600:

  == Forcing Marker bit, because SSRC has changed
Jun 26 17:53:52 WARNING[14248]: channel.c:2328 set_format: Unable to
find a codec translation path from ilbc to ulaw
Jun 26 17:53:52 WARNING[14248]: channel.c:2328 set_format: Unable to
find a codec translation path from ilbc to ulaw
Jun 26 17:53:52 WARNING[14248]: chan_sip.c:2555 sip_write: Asked to
transmit frame type 1024, while native formats is 4 (read/write = 4/4)
Jun 26 17:53:52 WARNING[14248]: channel.c:2693
ast_channel_make_compatible: No path to translate from
SIP/53061-92e0(4) to SIP/10.10.10.10-78fa(1024)
Jun 26 17:53:52 WARNING[14248]: channel.c:3520 ast_channel_bridge:
Can't make SIP/53061-92e0 and SIP/10.10.10.10-78fa compatible
Jun 26 17:53:52 WARNING[14248]: res_features.c:1381 ast_bridge_call:
Bridge failed on channels SIP/53061-92e0 and SIP/10.10.10.10-78fa
  == Spawn extension (iaxtest, 2144466715, 3) exited non-zero on
'SIP/53061-92e0'

The call drops.

If I enable ILBC codec with Asterisk, here is what I get:

  == Forcing Marker bit, because SSRC has changed
Jun 26 17:56:28 WARNING[14332]: codec_ilbc.c:175 ilbctolin_framein:
Huh?  An ilbc frame that isn't a multiple of 50 bytes long from RTP
(160)?
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received
Jun 26 17:56:28 NOTICE[14332]: rtp.c:575 ast_rtp_read: Unknown RTP
codec 122 received

The call continues with this error until I hang up.

I have been adjusting the dial-peer dtmf settings in the 2600 and have
tried all the dtmf settings in Asterisk.

Any guidance will be appreciated.

Thanks.

JR
-- 
JR Richardson
Engineering for the Masses