I have a client that would like to have a system phone at her home office. At her home there is an ASA with an L2L IPSec tunnel configured to the office where the UC540 is located. The UC540 is located at 192.168.1.254 on the remote network so I made sure the phone can ping that address. I've also noticed that the UC540 has other interfaces that I suspect need to be available to the remote phone. Specifically it has 10.12.13.1, 10.1.10.2. I've made sure to allow all of these addresses available to the remote network but the phone doesn't seem to register. It is a 7962. I figure if it can see the UC540, it should be able to register just as a phone on the local network would. Is this correct? What would I need to do to the phone / VPN to allow this to function?