Hi,

is ser supporting the SIP Request PRACK ? I get this Requests when i am forwarding an incoming call from a cisco router back to it (with an other number) à the destination telephone rings but i do not hear the signals (ringing) on my calling phone. When the called phone accepts the call then everything works fine.

In more detail:

The cisco router sends 2 PRACK Requests:

1. to the phone that is the destination of the forward (after forwarding)
2. to the phone with the forwarding set

But not to the phone which initialises the call.

Regards,

Reinhard