I have a customer with the complaint that calls coming into the MICS and then transferred (off-premise) to the lead number of a CICS down the street experience static and otherwise poor quality. This is a new issue, so I visited each site to check it out. All the POTS lines sound good when placing regular calls from each site. The call transfer will typically grab line 7 to make the second call to the remote CICS, so I checked that line quite thoroughly, but found nothing suspect. Here is my question: Where does the bridging of the two calls take place? Am I looking at an issue with the line cards, or is this on the backplane of the MICS?