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[sipxtapi-dev] FW: sipxCallUnhold hangs on pTapi

I was redirected from sipx-dev …

 

From: Gabor Paller
Sent: 24 April 2008 15:22
To: 'sipx-dev@xxxxxxxxxxxxxxxxxxx'
Subject: sipxCallUnhold hangs on pTapi

 

Dear list,

 

I detected a very strange phenomenon when using the pTapi interface. The effect is that the sipxCallUnhold invocation hangs.

 

The scenario is the following:

  1. I wait for phone call by intercepting the CALLSTATE_ALERTING event.
  2. When CALLSTATE_ALERTING arrives, I initiate an outgoing call in a separate thread. In that thread, I create and connect the call (sipxCallCreate, sipxCallConnect)
  3. Then I wait for CALLSTATE_CONNECTED/CALLSTATE_CONNECTED_ACTIVE event for the newly created outgoing call. When that event arrives, I create a conference (sipxConferenceCreate), join the outgoing call (sipxConferenceJoin) and hold the original incoming call (sipxCallHold).
  4. Then I wait for CALLSTATE_CONNECTED/CALLSTATE_CONNECTED_INACTIVE event. When I receive this event, I create a new thread. In that thread, I join the incoming call (currently held, as the API documentation demands, sipxConferenceJoin) and then unhold the incoming call (sipxCallUnhold).

 

Everything works fine, the conference is set up correctly. The only problem is that the last sipxCallUnhold invocation never finishes. Although I created a new thread for this call, it is kind of annoying. Does anyone have an explanation for this strange behaviour?

 

Gabor Paller, Software Architect
OnRelay

 

Elizabeth House | 39 York Road, London SE1 7NQ, UK | +44 (0) 207 902 8151 | gabor.paller@onrelay.com | www.onrelay.com

 

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