NEC VOIP phone "server connection lost" every 2.5 minutes

[egurudave]

thread937-1740092

HI! I have the exact same symptoms as described in this post from 6 years ago.

NEC VOIP phone connected and works fine with open ports through our Sonicwall to phone system. But every 2.5 minutes, the phone suddenly says "server connection lost", takes a minute to reset and then works again for 2 more minutes.

What can cause this?

Dave

 

[belevedere]

Check the UDP timeout in your router. Try extending the time.