Had to go out to a customer's site. Was told they had a Partner system. I got there and that turned out not to be the case. Their phones were Merlin Biz phones and the system was an old legend.

The problem I was sent out to troubleshoot was a hum on the lines (I checked and there was no hum before they went into the system), and the Paging not working (again, it worked fine if I bypassed the system with a buttset).

So the question is this: would replacing the 408 cards solve this or is it the processor that is causing the problem (personally I recommend replacing the system, but I was asked to find this out).