Yes, it is complex if the B2BUA does not have a media relay ( in which
case providing the SDP (at least the port information) itself).
Am 22.04.2010 16:01, schrieb Stefan Sayer:
or, other possibility, empty reinvite:
A b2b B
|---INVITE / SDPa-->| |
| |---INVITE / SDPa-->|
| | |
| |<-- OK/SDPb--------|
| |--- ACK ---------->|
|<-- OK/SDPb--------| |
|--- ACK ---------->| |
| | |
... sst timer expires ...
| | |
|<--INVITE | |
| | |
|--- OK/SDPc------->| |
now what? ignore that, or do
| |---INVITE / SDPc-->|
| |<-- OK/SDPd--------|
This is the proper approach.
one more ping-pong?
No.
|<----ACK/SDPd------|----ACK----------->|
No more ping-pongs needed.
regards
klaus
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