Can you see any issues with the following scenario?
In order to deal with the trouble from SPA400's that randomly 'die' (stop responding to the network all together), I'm thinking of attaching incoming phone lines to 2 SPA400's, setting 1 to answering on 2 rings, and the other to answer on 3. That way regardless of which gateway 'dies' the incoming calls are still answered. For outgoing calls, if a line is in use and not by the local gateway, the call seems to fail, so I'm assuming the best plan is to use the first line on gateway 1, and the second line on gateway 2 for outgoing calls so at least only half the outgoing capacity is impacted in the event of a spa400 failure. Thoughts? -Don