This is the craziest thing I've seen since using Mitel for the last 10 years.
We have a phone (5300) on our ICP 3300 that cannot hear anything or be heard. Gets a dial tone, but not voice incoming or outgoing. You can hear a bit of noise. Sometimes you can hear the first second or two of voice then craps out. It's been work fine for months, then yesterday at about 4pm or so is stopped working.
However, the rollover extension (same as prime extension), setup as a key appearance works just fine.
We've tried new devices, new cables, handsets, new port on switch, etc. We even removed the phone from the system, and recreated and still nothing.
What could be the issue here? We need to get this working. Currently we have this employees extension forwarded to a different phone in the meantime, but that will not be good solution for too long.
Thanks for the help!
-Evan