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<TITLE>Sofia late-negotiation on re-INVITE (codec-modification)</TITLE>
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<P><FONT SIZE=2>Basic call SIP vs SIP with:<BR>
<BR>
<param name="inbound-late-negotiation" value="true"/><BR>
<action application="set" data="inherit_codec=true"/><BR>
<param name="renegotiate-codec-on-reinvite" value="true"/><BR>
<BR>
This help to avoid FS transcoding, the SIP endpoints negotiate codec end-to-end.<BR>
FS still in the media path but no transcoding applied.<BR>
<BR>
INVITE [pcma,g729] ---> FS ---> INVITE [pcma,g729]<BR>
200 OK [pcma] <--- FS ---> 200 OK [pcma]<BR>
<BR>
<BR>
<BR>
If a SIP ep send a re-INVITE for codec modification, sofia negotiate the new codec on that leg without "asking" the remote party. This result in transcoding and since I have mod_g729 only in passthrough mode the call is released by the core.<BR>
<BR>
re-INVITE [g729] ---> FS<BR>
200 OK [g729] <--- FS<BR>
<BR>
<BR>
*************<BR>
It seems that "late_negotiation + inherit_codec" doesn't apply to a codec modification.<BR>
Do I miss some configuration options in the SIP profile?<BR>
(Note: I cannot use proxy-media/no-media mode in my configuration)<BR>
*************<BR>
<BR>
<BR>
Regards<BR>
Giovanni<BR>
<BR>
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