Dropped calls

[Johnnymac07]

I have an issue where calls are being dropped yet the phone display looks like it is still connected. From what I can tell, a message is never being sent back to the CO that the call has dropped and that they can go ahead and release the channel for another call, therefore the CO shows the channel idle and has a timer that locks out the channel after 30 seconds if they don't receive the message. Then users realize they are not connected and they try to dial out but they get a fast busy if they try to hit that locked out channel. The CO said I should check a t305 timer?

 

[simreal]

The first place I would look is answer supervision on the trunk.

Is this a new implimentation or is this a new problem to a previously working trunk?

 

[Johnnymac07]

Disconnect Supervision In - Y Out - Y
Answer Supervision Timeout 0

This was working previously.