Does anyone know how the 'keep alive' feature in Nortel Settings works? I have had some issues with remote 5010 phones disconnecting and reconnecting constantly. Others on the same system have no problems. We've done lots of troubleshooting on the sonic wall, and the remote router to no avail. I decided to adjust the 'keep alive' setting down to 30 seconds and that immediately stabilized all of the problem connections. I'm glad it's fixed, but the customer really wants to know what the root problem is that 'keep alive' is compensating for. The hover hint says the system checks on the 'sanity' of the remote phones. That seems less than technical.