We recently had a customer with a Panasonic KX-TDE100 Phone System with the latest release software. The customer had a mixture of Panasonic IP Phones such as NT400 IP Phones, NT366 IP Phones, and NT346 IP Phones. This was for high end residential application, so the customer wanted a clean installation of their phones. All of these phones were connected to a POE switch so that no power supplies would be needed. A problem arose upon installing the system. Every 20 minutes all of the phones would reboot for no apparent reason.

Initially we thought there might be a delay issue with the network itself. We tried adjusting a parameter called “Keep Alive Time Out” on the V-IPEXT32 Card within system programming. This solution did not fix the problem we were having with the network for this particular situation, though it is definitely a first step that you want to check.

We ended up figuring out that the issue was with the power requirements of the NT400 Phones themselves. These phones take much more power than a typical Panasonic IP Phone because the phone can do so much more. We recommend that you work with your IT Network Administrator to make sure that they can provide a POE switch with enough power resources to handle the type and amount of IP Phones you would like to install.