The other day, there was a page made to all sets on our system. Since then I can't use any of my IP phones (all i2004s on firmware 0602B65).
If I reboot the phone, then I can make outgoing calls, but as soon as I receive one incomming call, I can't use the phone any more.
When I pick up the handset or hit the spkr phone, there is no dial tone.
If I get an incomming call and answer it, I hear nothing, and so does the caller on the other side.
I have forced a firmware download on all phones, and the issue still exists.
What should my next troubleshooting step be?
If I reboot the phone, then I can make outgoing calls, but as soon as I receive one incomming call, I can't use the phone any more.
When I pick up the handset or hit the spkr phone, there is no dial tone.
If I get an incomming call and answer it, I hear nothing, and so does the caller on the other side.
I have forced a firmware download on all phones, and the issue still exists.
What should my next troubleshooting step be?