[Freeswitch-users] INCOMPATIBLE_DESTINATION - did FS not offer a codec?

[Avi Marcus]

OK then!
Looking at my call logs, it seems to mostly happen with one particular
carrier. Can I set verbose_sdp=true in the bridge string? e.g.
"[verbose_sdp=true]sofia/gateway/... "?

Thanks,
-Avi


On Tue, Sep 13, 2011 at 6:28 PM, Michael Collins <msc at freeswitch.org> wrote:

> For the record, line #107 contains the codecs (and other stuff) that FS
> offered:
>
> m=audio 16480 RTP/AVP 8 0 9 101 13
>
> The "8 0 9 101 13" represent the codecs (and other stuff). What do those
> numbers mean? This wiki page has the list:
>
> http://wiki.freeswitch.org/wiki/RTP_payload_list
>
> The SDP spec says that for non-dynamic payload numbers you are NOT required
> to have the "a=rtpmap" lines. This makes sense because those payload numbers
> don't change meaning until you get up to 96 and higher. The issue is that
> some devices are broken and require the "a=rtpmap" lines for the payload
> types below number 96. The verbose_sdp chan var mentioned by KK tells FS to
> add all those a=rtpmap lines for the non-dynamic payload types. You should
> only set this var when absolutely necessary because those verbose SDP's can
> cause the packets to be larger than the allowable MTU size.
>
> Dontcha just *love* SIP/SDP interop? :)
>
> -MC
>
> On Tue, Sep 13, 2011 at 8:01 AM, Avi Marcus <avi at avimarcus.net> wrote:
>
>> I see a failed bridge to my second carrier. The  sip_local_sdp_str doesn't
>> show PCMU in it - did FS not offer any codecs?
>>  FS log: http://pastebin.freeswitch.org/17316
>> PCAP: http://ge.tt/95tFji7
>>
>> Can someone tell me what's going on here?
>>
>> -Avi
>>
>>
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