I have issue with the loop start signaling with BT. :shock:
If 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 and start wait 3 sec. for clear the call. BUT at this time point, we receive the next incoming call from CO with Caller ID. 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. :(
And question, which of docs or standards describes this problem and how we can solve this problem.
What means, 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? :roll:
P.s. Sorry for my English. :)