Quadro2x hang

[wpyung]

The system hung whilst the boss was making a call.
The call dropped and he couldn't make another.
The GUI was not responding at all, although ping was responding.
I power cycled the box and now all is OK.

However when I look in the events and call statistics there is nothing showing from yesterday afternoon until the reboot.
All the system logs start at the reboot.
I have manged to download the logs to my PC.

Is there a way to monitor resources ?
If I switch on archive logging could it make this issue happen more frequently ?

Any ideas appreciated.

We are a small company who only make a few calls a day.
We have 14 VOIP extensions and we connect out on an ADSL line to the Internet.

[wpyung]

This seems to be related to this problem:
when we call a mobile number we get the audio message

Your account balance is insufficient to place your call to that destination

then the call is declined.

However calls to landlines work OK....