[Freeswitch-users] Codecs in SDP

[Kristian Kielhofner]

The codecs were included from the start (except GSM):

m=audio 17262 RTP/AVP 8 0 101 13

8 = PCMA
0 = PCMU
101 = telephone-event (dynamic)
13 = CNG

See this:

https://wiki.freeswitch.org/wiki/Variable_verbose_sdp

You might not be seeing GSM because it's not included on the profile
or the module (mod_spandsp, I believe) isn't loaded.


On Fri, Jun 6, 2014 at 9:51 AM, Ričardas Stoma <ricardas.stoma at gmail.com> wrote:
> It is still the same without single quote marks around PCMA,PCMU,GSM...
>
> But i think everything is OK with my SDP, i just made a call to my asterisk
> server and i see that asterisk receives correct codecs:
>
> Found audio description format telephone-event for ID 101
> Capabilities: us - (gsm|ulaw|alaw|h263|testlaw), peer -
> audio=(gsm|ulaw|alaw)/video=(nothing)/text=(nothing), combined -
> (gsm|ulaw|alaw)
>
> So i guess i had to learn more about SDP and codecs before posting my issue,
> sorry guys :-)
>
>
> 2014-06-06 15:47 GMT+03:00 Anonio Silva <asilva at wirelessmundi.com>:
>
>> Can you try:
>>
>> {absolute_codec_string=PCMA,PCMU,GSM}   ===> without '
>>
>>
>>
>> On Fri, 2014-06-06 at 11:36 +0300, Ričardas Stoma wrote:
>>
>> I have created the following extension:
>>
>>
>> <extension name="my_test">
>>   <condition>
>>     <action application="bridge"
>> data="{absolute_codec_string='PCMA,PCMU,GSM'}sofia/external/1001 at 192.168.1.78"/>
>>     <action application="hangup"/>
>>   </condition>
>> </extension>
>>
>>
>> then i call to this extension, freeswitch dials to 1001 at 192.168.1.78 and
>> when i check the content of SDP, included in a SIP packet,  i see something
>> like this:
>>
>>
>> v=0
>> o=FreeSWITCH 1401972565 1401972566 IN IP4 192.168.1.65
>> s=FreeSWITCH
>> c=IN IP4 192.168.1.65
>> t=0 0
>> m=audio 17262 RTP/AVP 8 0 101 13
>> a=rtpmap:101 telephone-event/8000
>> a=fmtp:101 0-16
>> a=ptime:20
>>
>>
>> why my codecs from 'absolute_codec_string' are not included in SDP? I
>> would expect to see these lines included:
>>
>> a=rtpmap:8 PCMA/8000
>> a=rtpmap:0 PCMU/8000
>> a=rtpmap:3 GSM/8000
>>
>> _________________________________________________________________________
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>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://wiki.freeswitch.org
>> http://www.cluecon.com
>>
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>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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>



-- 
Kristian Kielhofner