i have installed a CME with a client, and my problem is that sometimes an extention permanently have the state off-hook and it can't be used for anybody, the phone asociated with the extention have no sound and when a call arrives it present a busy tone.
i have no idea how this succed but the only way that i know to resolve it, is reloading the router, but i think that this is not the best way because the telephony service is very essential to the company (an hospital).
i used the command 'show voice port statistics' and the output is something like that:
altough the physical phone is on-hook.
what can i do?