I am trying to remember how this works.

Have an IP Office R 7 hooked up to my office network. I want to run 1 phone from home. A physical phone. What phone can I use, what license do I need, and what about setting up some sort of VPN? What do I need on the switch side?

Next question- what software and license and VPN stuff do I need to run a laptop as a set when I am at an airport or other place with WI-FI? A USB headset and what?

Thanks in advance.