I am having a wierd problem with a Partner ACS R7 and Partner Messaging R1 system in a cabinet with the following cards (left to right):

308EC, 400EC, ACSR7, PMR1 with 6 port card, rightmost slot empty.

With the following settings that may be related set:
#505 (Hunt Group 7 Extensions Assigned): 33-38
#506 (VMS Hunt Delay): 2 rings set to lines 01-08 day/night
#507 (VMS Hunt Schedule): All lines set yo Always
#502 (Calling Group 2): Extensions assigned: 10 & 11 for return from AA

The system at first with any #506 setting above 2 rings, would ring the first line on an incoming call about 3 times, then would ring the second line inthe hunt gorup about 3 rings, then the 4th line and so on until it reached the end of the hunt group, then would ring until someone picked up; the auto attendant (AA) never answered. When I set #506 to 2 rings or less, the AA worked flawlessly. That was 3 days ago. The yesterday, even with no settings changes, the odd behavior was exhibitted again; no AA answer and in coing calls einging thru all our hunted lines. Then last night, I called the office main number and the AA was picking up again after 2 rings. I've never seen such strange behaior and hope someone might have a suggestion.

Thanks in advance,
Dino