Hello,

I am testing the interaction of inbound calling via the ITSP and the
park server.

sipxbridge is currently configurable to play Music On Hold when the
user puts an inbound ITSP call on hold. This works very well when the
transfer target is *not* the park server.

However, bad things happen when an inbound ITSP call is transferred to
the Park Server. Note that under these conditions, the Park Server is
already playing MOH as part of the call transfer process ( this is
initiated by sipxbridge) when the call is parked.  Here is what I
observe:

1. Call comes in from ITSP and is picked up at extension 201.
Extension 201 wants to park the call so starts a blind transfer. MOH
starts to play on the PSTN side. This involves sending an INVITE to
the Park Server to play the MOH ( this INVITE is sent by sipxbridge).

2. Extension 201 parks the call by sending a second INVITE to the park
server. The park server does not send a RE-INVITE to the ITSP as it
would for a local call. This is good because MOH is already in
progress for the call.

3. Timeout expires. The park server  refuses to issue a REFER  after
the timeout period.


Would it be possible to make the Park Server cognizant of the fact
that it is already playing music for a given call (for example by
looking at the call ID) and hence should not play a second stream for
the same call?

Thanks.


Ranga





-- 
M. Ranganathan
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