I have the following problem: when a call comes in and rings for more than 20 seconds, the PSTN considers this as an unassigned number, and plays a message saying that the number is not available.
is this an issue for all calls? i think there is a mistake in the destination of call forward no answer (20 seconds is the default call forward on no answer timer). please check your forward no answer calling search space and the forward destination number.
regards
mehmet
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