22 Apr
2010
22 Apr
'10
5:16 p.m.
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