[SR-Users] [Sems] Solutions to missing BYEs, accounting for them

[Klaus Darilion]

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