I don’t know since when I got this problem, as my GXP1625 is located in a room that is not often used. I did not change the config parameters.
The phone rings when the number is called, but I cannot hear the caller, neither he can hear my voice. The phone is like muted, although the mute logo isn’t displayed.
When I press the line key for line 2 and afterwards the key for line 1 , the phone state changes to unmuted without any changes on the LED display.
Can anyone tell me what needs changed, please?