We have recently installed a CME system running IOS 12.4.22.T1. CME version is 7.0. We have a T1 CAS using all 24 channels. Is there a way to get caller id to display on inbound calls?
T1 CAS doesn't support caller-id. Some providers will offer it as a supplementary service via DTMF in the *ANI*CLID format, but this isn't supported on the ISR routers.
You can get caller ID via CAS FGD ports. I would ask your provider if this is an option.