hi
Here is the call scenario:
Caller side SIP server Callee side|
| |@-> INVITE
------------------>| || m=audio 16428 RTP/AVP 4 0
2 8 100 101 || |
|| @-> INVITE ------------------>||
| m=audio 16428 RTP/AVP 4 0 2 8 100 101|
| || |<-
200 OK -------------------@| | m=audio 16460
RTP/AVP 4 100 101| |
||<- 200 OK -------------------@ || m=audio 16460
RTP/AVP 4 100 101 || |
|| |
|@-> re-INVITE --------------->| || c=IN IP4
0.0.0.0 | |
On-hold event has been detected and now the SIP server wants to playmy own
music-on-hold to callee side. But the problem is that SIPserver has no the MOH
in G723 codec but has it in G711 and G729 forexample. I know that the callee
side supports both G711 and G729codecs. The question is how to ask callee side
of established dialogfor full list of supported codecs?
(Actually the same codec related issue exists for attended transferhandling on
SIP server side.)
--tut
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