[Freeswitch-users] trans-coding is not working

[Brian West]

Works:

    <extension name="Local_Extension">                                                                                                                          
      <condition field="destination_number" expression="^(10[01][0-9])$">                                                                                       
        <action application="export" data="absolute_codec_string=${ep_codec_string},PCMU at 8000h"/>                                                               
        <action application="export" data="inherit_codec=true"/>                                                                                                
        <action application="bridge" data="user/${dialed_extension}@${domain_name}"/>                                                                           
        <action application="answer"/>                                                                                                                          
        <action application="sleep" data="1000"/>                                                                                                               
        <action application="bridge" data="loopback/app=voicemail:default ${domain_name} ${dialed_extension}"/>                                                 
      </condition>                                                                                                                                              
    </extension> 


--
Brian West
brian at freeswitch.org
FreeSWITCH Solutions, LLC
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On Jan 31, 2014, at 1:52 AM, Dahlberg, David <david.dahlberg at fkie.fraunhofer.de> wrote:

> Am Donnerstag, den 30.01.2014, 22:02 +0100 schrieb thomas peterseil:
>> hello brian,
>> thanks for your help! as far as i understood the default config of FS,
>> it takes the codec list from the vars.xml file. i have both codecs
>> (PCMU,PCMA) there:
>> --------------
>>  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G722,PCMU,PCMA,GSM"/>
>>  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM"/>
>> --------------
> 
> Right, but the default configuration (i.e. the "vanilla demo") also sets
> "inbound-late-negotiation" and "zrtp-passthru", which implicitly sets
> "inbound-late-negotiation". 
> 
> "Late negotiation" with "inherit codec" will make FS only to offer only
> those codecs on the outbound side, that it received on the inbound
> side. 
> 
> For example be there a setup "A -- FS -- B", A uses G.711A and G.711µ,
> FS uses G.711A and GSM-FR, and B uses GSM-FR. If then FS receives an
> "INVITE B, codec PCMA, PCMU" from A, it will forward PCMA as the only
> codec choice to B.
> 
> See http://wiki.freeswitch.org/wiki/Codec_Negotiation
> 
> Regards,
> 	David
> 
>