Hello,

I have Comdial FXII with two T1/PRI cards. I am trying to connect one T1 card (from PBX) to Cisco 3725 that has NH-HDV and t1 card. I am using twister pair cable. Neither Cisco and FxII doesn't recognize the connection. t1 card in Cisco is yellow light. Comdial t1 card is in red light. It looks Cisco and Comdial doesn't see each other.
However, if I plug a service provider to Comdial, light is green. If I plug a service provider to Cisco it is green also.

What am I doing wrong?
Egor