Recently provisioned PRI not working properly. Target line 241 setup to receive 4 digits (2600). 1st call will ring and can see in BCM monitor but second call gets busy signal. Essentially it will receive only 1 call at a time. If I change the receive digits to another DID (2602)all works fine. what could be causing this to happen? Also all other programmed targets working as expected. I also tried to reassign (2600) to another target line (248) and no dice. Any help greatly appreciated. BCM400 4.0 Latest Patches.