I am little bit confused on designing a failover UCM network with 2 UCM 6510s and HA100. The problem I am facing is that the client have 2 E1 PRI lines need to terminate on the system and HA100 has only 1 E1 interface.
So I am thinking about introducing a GXW4501 to have that additional E1 support. I need your expert opinion in this matter on how to do the right connections for this scenario. Please correct me if I am wrong with the whole design. Diagram attached for your reference.