I have been experiencing a problem when placing calls through an CCME 4.0(2), on 3825 - 12.4(11)T:
- Internal calls works fine;
- Outside calls works fine, but after some time working good, sometimes it doesn't complete the call and returns Unknown Number message on ip phone display. The uncompleted calls volume goes increasing until people get nervous (like 5 tries to get 1 call complete) that we reload the router and everything gets ok again, and the process start again, approximatelly in 1-2 weeks it will be necessary reload again.
Do you have any idea what can cause this problem?
Thanks for your attention guys!