Just an update, since I've received my 2nd Vonage adapter for the new place . . .

The process of switching lines between adapters isn't as streamlined as I'd hoped. Not only do you have to select the line you wish to move and the port you wish to move it to, you have to enter the E911 information for each line as you move it. And, of course, if you're moving 2 lines, you have to do it twice.

Once you've made the switch, it can take some time before the Vonage devices update themselves and the lines actually become active. I did some testing at my primary residence with both devices plugged into my LAN, and at the moment the reliability of the switchover is suspect (I don't think I've successfully completed a handoff from one device to another without having to power off/on the device I'm switching to in the process).

We'll see how it goes once we set things up in the secondary residence . . .