Customer has Partner Plus System with two 206E R3.1 cards, a 206 R4.0 card and Processor Module R4.1. There are about 10 phones on the system. There are 6 phone lines total two for each 206 card. Problem is when someone is using a phone and a incoming call rings "any remaining line" they will hear clicking/buzz in the receiver when one of the other lines is ringing. I have removed all phones and added one to the system at a time to verify it was not a phone and same problem happens. I have moved one phone from one 206 card to another to verify it's not a 206 card specific problem. I did the same thing with another phone to make sure by chance it was not the individual phone I was testing with. I did test one phone that had line appearances but the lines were set to appear and not ring didn't have this problem. So seems to be something with the ringing lines going into the processor card and out to the phones. Any suggestions to help isolate this further would be greatly appreciated.
Thanks in advance.
Thanks in advance.