[Freeswitch-users] Hack for Zoiper speex codec payload problem

[Ken Rice]

That¹s just broken in general... The RTP map there is saying that codec 101
is telephone-event/8000 which is specifically RFC2833 DTMF... There is no
audio codec in there...

In this case it appears no actual audio codecs were offered


On 11/14/14 5:07 PM, "Mateusz Bartczak" <netcentrica at gmail.com> wrote:

> Zoiper sends 101 code, which seems to be not recognized by FS
> 
> absolute_codec_string is set to
> speex at 8000h@20i,SILK at 8000h@20i,G729,GSM,SILK at 12000h@20i,PCMA,PCMU
> 
> Here are parts from logs:
> 
> 2014-11-15 00:01:26.118326 [DEBUG] sofia.c:5860 Remote SDP:
> v=0
> o=Z 0 0 IN IP4 37.190.147.137
> s=Z
> c=IN IP4 37.190.147.137
> t=0 0
> m=audio 64037 RTP/AVP 101
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> 
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[PCMA:8:8000:20:64000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[PCMU:0:8000:20:64000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[SPEEX:99:32000:20:44000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[SPEEX:99:16000:20:42200]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[SPEEX:99:8000:20:24600]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[SILK:118:12000:20:25000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[SILK:117:8000:20:20000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[G729:18:8000:20:8000]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5284 Audio Codec Compare
> [telephone-event:101:8000:20:0]/[GSM:3:8000:20:13200]
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [DEBUG] sofia_glue.c:5453 Set 2833 dtmf send/recv
> payload to 101
> 2014-11-15 00:01:26.118326 [NOTICE] sofia.c:6185 Hangup
> sofia/external/964938 at 80.72.35.123 [CS_NEW] [INCOMPATIBLE_DESTINATION]
> 
> Still no success
> 
> 
> 2014-10-21 14:29 GMT+02:00 Brian West <brian at freeswitch.org>:
>> Since the codec is in the dynamic range the payload number is of little to no
>> value the codec name is then used to compare.  So could you provide some
>> details of what you think is wrong?
>> 
>> On Fri, Oct 17, 2014 at 7:34 AM, Mateusz Bartczak <netcentrica at gmail.com>
>> wrote:
>>> Android, but the same problem is with Windows client
>>> 
>>> 2014-10-17 12:35 GMT+02:00 Brian West <brian at freeswitch.org>:
>>>> Android or iOS?
>>>> 
>>>> 
>>>> On Friday, October 17, 2014, Mateusz Bartczak <netcentrica at gmail.com>
>>>> wrote:
>>>>> Hi All,
>>>>> 
>>>>> I have problem with getting Zoiper with enabled codec speex/8000 working
>>>>> with FS. I saw some discussions about this problem before, but none of
>>>>> them ended with working solution.
>>>>> 
>>>>> Maybe these days some of you can share some hints how to hack this
>>>>> 
>>>>> Problem is that Zoiper sends SDP payload type 110 for speex/8000, but FS
>>>>> expects other type for that codec. 
>>>>> 
>>>>> I tried to rewrite SDP on OpenSIPS proxy that sits between end users and
>>>>> FS box, and then later rewrite replies with SDP payload generated by FS to
>>>>> 110 code, but calls always end-up with codec negotiation failure
>>>>> 
>>>>> And yes, I know that zoiper is broken, please don't paste RFC here :) 
>>>>> 
>>>>> It gets very popular on mobile devices and I'm forced to provide support
>>>>> for it, even if its broken
>>>> 

-- 
Ken
http://www.FreeSWITCH.org
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irc.freenode.net #freeswitch
Twitter: @FreeSWITCH


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