[Freeswitch-users] Error in codec negotiation: What are all the places that specify accepted codecs for outgoing calls?

Michael Jerris mike at jerris.com
Tue Jun 10 16:42:31 MSD 2014


Hmm, not sure thats true.  You are not supposed to change codecs before the dialog is complete like this, its a violation of sdp o/a.

On Jun 10, 2014, at 4:50 AM, Kristian Kielhofner <kris at kriskinc.com> wrote:

> Hi Mark,
> 
>   Thanks for providing the full log.
> 
>   While goofy this is perfectly valid behavior. Because your instance of Freeswitch offers pcma and pcmu it's ok for the other side to switch between the two in 183.
> 
>   A few things to try:
> 
> - Limit your outbound offers to pcma or pcmu only (one codec).
> 
> - The remote side appears to support 100rel (PRACK). Try enabling it in Freeswitch. While a long shot it's possible that PRACK'ing the initial received 183 might change the codec swap behavior of the remote end.
> 
> - Try Freeswitch 1.4 or master. There's been some significant changes in media/SDP behavior, particularly when the remote end does technically standards compliant but goofy things with multiple codec offers.
> 
>   If none of these works you're only option may be to have the carrier take some action. 
> 
> On Monday, June 9, 2014, Mark Boots <mark at votomobile.org> wrote:
> Hi Kristian,
> 
> I've narrowed this INCOMPATIBLE_DESTINATION error down to a specific case:
> 
> 1 - Freeswitch sends the outgoing call, and offers PCMU/PCMA/GSM
> 2 - Other end accepts only PCMU
> 3 - At some point after Pre-answer, the other end issues a 183 Session Progress, changing to only accept PCMA.
> 4 - Freeswitch attempts to select new codecs but only looks at PCMU, and cancels the call with INCOMPATIBLE_DESTINATION.
> 
> 
> Here is the console log and sip trace... Hope it helps!
> 
> +Mark
> 
> 2014-06-09 21:35:39.615207 [DEBUG] switch_ivr_originate.c:2069 Parsing global variables
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_request_uuid]=[004fd8a2-f01e-11e3-844d-22000ad937f0]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_answer_url]=[http://10.8.0.1/deliverylogs/answer/752471]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_ring_url]=[http://127.0.0.1/callqueue/ring.php]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_hangup_url]=[http://127.0.0.1/callqueue/hangup.php]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [origination_caller_id_number]=[12026004299]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_from]=[12026004299]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_to]=[0011104555592211972]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [plivo_app]=[true]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [originate_timeout]=[60]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_event.c:1661 Parsing variable [ignore_early_media]=[true]
> 2014-06-09 21:35:39.615207 [NOTICE] switch_channel.c:1049 New Channel sofia/external/0011104555592211972 [005052e6-f01e-11e3-bbae-cbf0f4eac998]
> 2014-06-09 21:35:39.615207 [DEBUG] mod_sofia.c:5237 (sofia/external/0011104555592211972) State Change CS_NEW -> CS_INIT
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_session.c:1351 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:418 (sofia/external/0011104555592211972) Running State Change CS_INIT
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:458 (sofia/external/0011104555592211972) State INIT
> 2014-06-09 21:35:39.615207 [DEBUG] mod_sofia.c:87 sofia/external/0011104555592211972 SOFIA INIT
> 2014-06-09 21:35:39.615207 [DEBUG] sofia_glue.c:2746 sofia/external/0011104555592211972 sending invite version: 1.2.24 git 7b74ee3 2014-06-03 00:26:24Z 32bit
> Local SDP:
> v=0
> o=FreeSWITCH 1402325141 1402325142 IN IP4 54.203.245.50
> s=FreeSWITCH
> c=IN IP4 54.203.245.50
> t=0 0
> m=audio 24598 RTP/AVP 0 8 3 101 13
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=ptime:20
> a=sendrecv
> 
> 2014-06-09 21:35:39.615207 [DEBUG] mod_sofia.c:127 (sofia/external/0011104555592211972) State Change CS_INIT -> CS_ROUTING
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_session.c:1351 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:458 (sofia/external/0011104555592211972) State INIT going to sleep
> send 1071 bytes to udp/[108.59.2.133]:5060 at 21:35:39.620673:
>    ------------------------------------------------------------------------
>    INVITE sip:0011104555592211972 at 108.59.2.133 SIP/2.0
>    Via: SIP/2.0/UDP 54.203.245.50:5080;rport;branch=z9hG4bKUNeNtZcZp5ZmB
>    Max-Forwards: 70
>    From: "" <sip:12026004299 at 54.203.245.50>;tag=9Z1HtD145Qv3K
>    To: <sip:0011104555592211972 at 108.59.2.133>
>    Call-ID: d7aeb7a1-6ac0-1232-718c-22000ad937f0
>    CSeq: 60838805 INVITE
>    Contact: <sip:gw+voxbeam_outbound at 54.203.245.50:5080;transport=udp;gw=voxbeam_outbound>
>    User-Agent: FreeSWITCH-mod_sofia/1.2.24+git~20140603T002624Z~7b74ee3955~32bit
>    Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
>    Supported: timer, path, replaces
>    Allow-Events: talk, hold, conference, refer
>    Content-Type: application/sdp
>    Content-Disposition: session
>    Content-Length: 207
>    X-FS-Support: update_display,send_info
>    Remote-Party-ID: <sip:12026004299 at 54.203.245.50>;party=calling;screen=yes;privacy=off
>    
>    v=0
>    o=FreeSWITCH 1402325141 1402325142 IN IP4 54.203.245.50
>    s=FreeSWITCH
>    c=IN IP4 54.203.245.50
>    t=0 0
>    m=audio 24598 RTP/AVP 0 8 3 101 13
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=ptime:20
>    ------------------------------------------------------------------------
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_session.c:1016 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:418 (sofia/external/0011104555592211972) Running State Change CS_ROUTING
> 2014-06-09 21:35:39.615207 [DEBUG] sofia.c:5845 Channel sofia/external/0011104555592211972 entering state [calling][0]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:474 (sofia/external/0011104555592211972) State ROUTING
> 2014-06-09 21:35:39.615207 [DEBUG] mod_sofia.c:150 sofia/external/0011104555592211972 SOFIA ROUTING
> 2014-06-09 21:35:39.615207 [DEBUG] switch_ivr_originate.c:67 (sofia/external/0011104555592211972) State Change CS_ROUTING -> CS_CONSUME_MEDIA
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_session.c:1351 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:474 (sofia/external/0011104555592211972) State ROUTING going to sleep
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:418 (sofia/external/0011104555592211972) Running State Change CS_CONSUME_MEDIA
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:493 (sofia/external/0011104555592211972) State CONSUME_MEDIA
> 2014-06-09 21:35:39.615207 [DEBUG] switch_core_state_machine.c:493 (sofia/external/0011104555592211972) State CONSUME_MEDIA going to sleep
> recv 367 bytes from udp/[108.59.2.133]:5060 at 21:35:39.725204:
>    ------------------------------------------------------------------------
>    SIP/2.0 100 Giving a try
>    Via: SIP/2.0/UDP 54.203.245.50:5080;received=54.203.245.50;rport=5080;branch=z9hG4bKUNeNtZcZp5ZmB
>    From: "" <sip:12026004299 at 54.203.245.50>;tag=9Z1HtD145Qv3K
>    To: <sip:0011104555592211972 at 108.59.2.133>
>    Call-ID: d7aeb7a1-6ac0-1232-718c-22000ad937f0
>    CSeq: 60838805 INVITE
>    Server: OpenSIPS (1.8.2-notls (x86_64/linux))
>    Content-Length: 0
>    
>    ------------------------------------------------------------------------
> recv 657 bytes from udp/[108.59.2.133]:5060 at 21:35:41.191275:
>    ------------------------------------------------------------------------
>    SIP/2.0 183 Session Progress
>    Via: SIP/2.0/UDP 54.203.245.50:5080;rport;branch=z9hG4bKUNeNtZcZp5ZmB
>    From: "" <sip:12026004299 at 54.203.245.50>;tag=9Z1HtD145Qv3K
>    To: <sip:0011104555592211972 at 108.59.2.133>;tag=9312047651043624688
>    Call-ID: d7aeb7a1-6ac0-1232-718c-22000ad937f0
>    CSeq: 60838805 INVITE
>    Content-Type: application/sdp
>    Contact: <sip:callee at 108.59.2.133;did=795.65454242>
>    Supported: timer,100rel
>    Content-Length: 226
>    
>    v=0
>    o=RISNEXT02 869 1999 IN IP4 80.84.30.41
>    s=sip call
>    c=IN IP4 80.84.30.41
>    t=0 0
>    m=audio 42108 RTP/AVP 0 13 101
>    a=rtpmap:0 PCMU/8000
>    a=rtpmap:13 CN/8000
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=ptime:20
>    ------------------------------------------------------------------------
> 2014-06-09 21:35:41.175213 [DEBUG] switch_core_session.c:1016 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:41.175213 [DEBUG] switch_core_session.c:1016 Send signal sofia/external/0011104555592211972 [BREAK]
> 2014-06-09 21:35:41.175213 [DEBUG] sofia.c:5845 Channel sofia/external/0011104555592211972 entering state [proceeding][183]
> 2014-06-09 21:35:41.175213 [DEBUG] sofia.c:5858 Remote SDP:
> v=0
> o=RISNEXT02 869 1999 IN IP4 80.84.30.41
> s=sip call
> c=IN IP4 80.84.30.41
> t=0 0
> m=audio 42108 RTP/AVP 0 13 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:13 CN/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=ptime:20
> 
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:5284 Audio Codec Compare [PCMU:0:8000:20:64000]/[PCMU:0:8000:20:64000]
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3192 Set Codec sofia/external/0011104555592211972 PCMU/8000 20 ms 160 samples 64000 bits
> 2014-06-09 21:35:41.175213 [DEBUG] switch_core_codec.c:111 sofia/external/0011104555592211972 Original read codec set to PCMU:0
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:5444 Set 2833 dtmf send payload to 101
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3451 AUDIO RTP [sofia/external/0011104555592211972] 10.217.55.240 port 24598 -> 80.84.30.41 port 42108 codec: 0 ms: 20
> 2014-06-09 21:35:41.175213 [DEBUG] switch_rtp.c:2040 Starting timer [soft] 160 bytes per 20ms
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3718 Set 2833 dtmf send payload to 101
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3724 Set 2833 dtmf receive payload to 101
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3751 sofia/external/0011104555592211972 Set rtp dtmf delay to 40
> 2014-06-09 21:35:41.175213 [DEBUG] sofia_glue.c:3757 Set comfort noise payload to 13
> 2014-06-09 21:35:41.175213 [NOTICE] sofia_glue.c:4362 Pre-Answer sofia/external/0011104555592211972!
> 

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