In proxy media mode FS will pass media straight through without any processing. It won't do any transcoding or any SDP modifcation, so it can't transcode PCMU <-> G729 and absolute_codec_string will be ignored - it'll just pass the codec settings straight through from the A leg to the B leg.

So it's expected behaviour.

-Steve



On 2 August 2010 04:55, Dome Charoenyost <dome@tel.co.th> wrote:
Dear All,
       I'm not sure it's bug or not ?
I try to test codec  negotate. with 3 FS box
FS1 send PCMA to FS2 and FS2 send G729 to FS3

FS1 -----> [PCMU] ----> FS2 ------> [G729] -------> FS3 (10.20.2.49)
My dialplan
<action application="bridge"
data="{absolute_codec_string='G729'}sofia/internal/2222@10.20.2.49:5080"/>
It's work fine
When i try
<action application="set" data="proxy_media=true"/>
<action application="bridge"
data="{absolute_codec_string='G729'}sofia/internal/2222@10.20.2.49:5080"/>
Call fail. because FS2 ignore absolute_codec_string='G729' and send
only  PCMU  (I think by pass from FS1)

It's bug or not ?

Dome C.

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