I have a customer with a CICS 6.1. After years of working properly, recently caller-id from mobile devices has stopped working. Instead of getting the name like they always have, they now just get "/w" all the time. If I plug a standard telephone into the Comcast interface, I get the caller id as I should every call. If I reset the system, it works for one call, then reverts back. Any ideas? Thinking of defaulting the system and reprogramming. As far as replacing equipment, I would not know whether to change the KSU, the SW, or the CI card?