I have a couple of remote IP phones connected to a 9100. After initial heartache during setup, they are working fine. The IT guy has the port forwarding, etc. setup and it has been working for quite a while now.

IT guy has recently been looking at some other phone things for himself and came across a mention of a VPN direct from phone to 9100. I've noticed VPN options in the phone while setting up the remote connections, but left them alone. Now I'm wondering if there might be a better way than what we've been doing. I found the InVPN install guide on NTAC. It mentions the IP6-L adapter for the phone, but I can't find it anywhere to buy. The software has to be installed on the GCD-SRVR2 blade. Will it work if the GCD server is a stand-alone server? Is this VPN from phone to system the way to do it?

Thanks.
Jim