[USR-TC] Fast Busys

Quick synopsys: T1 PRI's (10) We changed nothing on our end and have checked everything 100 times. Started to get fast busys radomly throughout hunt. Only thing that the DSP console is reporting is Call Block Failure Count is increasing incrementally. We have some Quads and you can see the light flash yellow for 1/5 of a second then they go dark. This indicates the calls are hitting our TC unit, but dump. Then a call will come in on the same modem and will connect. There is no rhyme or reason to it and its driving us nuts. We suspect that its the Telco, but they claim "nothings changed". PRI's are not erroring either. We've tried everything looking for some input. Thanks! Steve Hadow GTI