NBX 3000, approximately 45 phones
Version: R5_0_28
Created: Nov 16 2006

The system was stable close to 2 years, and this is a new problem that has sprung up.


On random occasions, we get "All ports busy" displayed on the phones and there is not fix short of rebooting the server (takes 30 minutes usually).  No outgoing or incoming calls can be made (busy signal both ways).  

3COM support has reviewed the logs each time, and the only thing that shows is 2 phones repeatedly trying to connect back to the server, but that is about it.  It is never consistently the same phones. - and trust me, the lines are not all being used.

Also, when this happens, the T1 status shows as "unknown".


Now there have been problems on the Telco side when their box was destroyed by a vehicle or something like that, so I am wondering if it is possible that they made some T1 changes that could have introduced a problem????    Not sure exactly what to search for and 3Com hasn't really lead the way.

Any suggestions?