I have a CME 4.0 Router (3845) with Unity express NM-CUE-EC. I would like to add a hot standby in case this one fails. I want the phones to switch over to the standby Router and I can swith the T-1 connections to this Standby Router.
1. Is this possible?
2. Do I have to creat Identical
configuration on the standby router?
3. Do I have to use additional hardware
and software to make this work?
4. What about the licensing? Do I have
to buy Licenses for the spare Router
Is there a configuration guide or a link on Cisco's website?
Thanks in advance