[Asterisk-Users] G729 troubles

[Peter Brown]

Have you bought G.729a from Digium which cost $10/channel?
At 02:04 25/12/03 +0300, you wrote:
>Hello,
>I've successfully installed Asterisk from last CVS   and configured it
>for using with DLINK-DG104S  as mgcp CPE and PGW2200 as external sip
>server.
>All are work fine at G711 codecs, but then I disable all codecs except
>g729 some calls failed (Not all calls. Some calls passed at g729
>succesfully).
>  All my devices configred to use only g729 and I don't see other codecs
>at mgcp or sip messages, but I see strange   string at asterisks log:
>
>NOTICE[196633]: File rtp.c, Line 418 (ast_rtp_read): Unknown RTP codec
>123 received
>NOTICE[196633]: File channel.c, Line 1478 (ast_set_read_format): Unable
>to find a path from ALAW to G729A
>NOTICE[196633]: File channel.c, Line 1448 (ast_set_write_format): Unable
>to find a path from G729A to ALAW
>WARNING[196633]: File chan_mgcp.c, Line 757 (mgcp_write): Asked to
>transmit frame type 8, while native formats is 256 (read/write =
>256/256)
>WARNING[196633]: File app_dial.c, Line 279 (wait_for_answer): Unable to
>forward frame
>
>I find similary posts at Asteris-Users mailing list, but don't find how
>to resolve this trouble.  Is this a bug or some misconfiguration at my
>configs ?
>
>sip.conf:
>[general]
>port = 5060
>bindaddr = 0.0.0.0
>context = local
>disallow = all
>allow = g729
>mgcp.conf
>[general]
>port = 2427
>bindaddr = 0.0.0.0
>disallow = all
>allow = g729
>[DLINK]
>context=local
>host=Y.Y.Y.Y
>threewaycalling=yes
>transfer=yes
>line => aaln/1
>line => aaln/2
>line => aaln/3
>line => aaln/4
>extension.conf
>[local]
>ignorepat => 9
>exten => _9XXXXXXX,1,Dial,SIP/${EXTEN:1}@IP.IP.IP.IP
>
>Some logs from Asterisk:
>
>First mgcp CRCX after hang up:
>Posting Request:
>CRCX 323 aaln/1 at DLINK MGCP 1.0
>v=0
>o=root 23577 23577 IN IP4 X.X.X.X
>s=session
>c=IN IP4 X.X.X.X
>t=0 0
>m=audio 14548 RTP/AVP 18
>a=rtpmap:18 G729/8000
>
>After that I enter phone number and sent call to sip server:
>
>     -- Executing Dial("MGCP/aaln/1 at DLINK-0", "SIP/3632034 at IP.IP.IP.IP")
>in new stack
>
>INVITE sip:3632034 at IP.IP.IP.IP SIP/2.0
><skip>
>v=0
>o=root 16078 16078 IN IP4 X.X.X.X
>s=session
>c=IN IP4 X.X.X.X
>t=0 0
>m=audio 18480 RTP/AVP 18 101
>a=rtpmap:18 G729/8000
>a=rtpmap:101 telephone-event/8000
>a=fmtp:101 0-16
>
>Then I receive reply from SIP server:
>Sip read:
>SIP/2.0 100 Trying
><skip>
>
>Sip read:
>SIP/2.0 183 Session Progress
><skip>
>v=0
>o=- 0 0 IN IP4 Z.Z.Z.Z
>s=-
>c=IN IP4 Z.Z.Z.Z
>t=0 0
>m=audio 49640 RTP/AVP 18 101
>a=rtpmap:101 telephone-event/8000
>a=fmtp:101 0-15
>a=X-sqn: 0
>a=X-cap:  1 image udptl t38
>a=sqn: 0
>a=cdsc:  1 image udptl t38
>
>After this message sometimes Asterisk make error message at log and drop
>call:
>
>   -- SIP/IP.IP.IP.IP-b782 is making progress passing it to
>MGCP/aaln/1 at DLINK-1
>srv-5*CLI> NOTICE[196633]: File rtp.c, Line 418 (ast_rtp_read): Unknown
>RTP codec 123 received
>NOTICE[196633]: File channel.c, Line 1478 (ast_set_read_format): Unable
>to find a path from ALAW to G729A
>NOTICE[196633]: File channel.c, Line 1448 (ast_set_write_format): Unable
>to find a path from G729A to ALAW
>WARNING[196633]: File chan_mgcp.c, Line 757 (mgcp_write): Asked to
>transmit frame type 8, while native formats is 256 (read/write =
>256/256)
>WARNING[196633]: File app_dial.c, Line 279 (wait_for_answer): Unable to
>forward frame
>
>Reliably Transmitting:
>CANCEL sip:3632034 at IP.IP.IP.IP:5060 SIP/2.0
>
>Sip read:
>SIP/2.0 487 Request Cancelled
>....
>
>--
>Antonio
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Peter Brown
CEO
IP Telephonics