Hi all,
I have issue with the loop start signaling with BT.
We have incoming call from analogue trunk with BT Caller ID, but we don't answer it. After some time the CO finishes the call, we detect the last RING Interrupt and start to wait 3 sec for the clearing the call(SIN 352). BUT at this time point, we receive the next incoming call from CO with Caller ID too. We can't detect Polarity Revesal until we finished the previous call. As result we don't detect Caller ID message for the second call. It's problem.
We support Caller ID service type which described in SIN227 and SIN 242.
How we can understand what first call already disconnected?
And, if we receive the Polarity Reversal in the ALERTING state, Is it constantly means the new call and we can clear the previous? Or there may be other ways to solve this problem?
Thanks.
