Hi, I have CUCM version 12.0.1 at my office and also, i have express way c and e. How to register an IP phone at my home through the internet to my CUCM at the office using Express way c and e?

Is the two commands "errdisable recovery cause psecure-violation" and "errdisable recovery interval 120" used in the configuration of CISCO ISE in CISCO edge switches.

I have two WAN lines, one internet line 30 Mbps and the other is WAN line connected to the branch with 20 Mbps:My question is which is better to support this bandwidth and better throughput: CISCO router 888/k9, or, CISCO router 2911/k9