Our infrastructure consists of roughly 30 endpoints, mostly HDX 8000. Over the past year we've started to notice a repeatable issue in almost all of our units. For whatever reason they lose the ability to accept ( or even recognice ) and incoming call or to make an outgoing call. When it happens, the units still allow connectivity via the web managment interface both from inside the LAN and outside, but don't even recgognize incoming calls eithier from a bridge or another individual endpoint.
We have updated firmware and even physicaly replaced units due to upgrades, but this issue has become more and more prevalent. Sometitmes the units need to be rebooted multiple times a day to solve the unresponsiveness to calls.
We have made some network infrastructure changes, but not sure where we could even begin to look. It's almost as if there is a "keep alive" issue on the firewall or something of that nature. It happens frequently and on just about all units on our network.
