I have a Nortel KSU running 7.1 sw and a CallPilot 150. I have a PRI and all calls go to prime set. I have set up AA and have it set to answer calls after 8 rings. Calls ring to prime first and if not answered by 8th ring AA picks up. The problem I am having is when I have the AA set to answer after 8 rings the first 4 rings are not ringing the prime set. 5th ring finally rings the prime. Any thoughts?? Thx