Had a stable NBX100 environment for 4+ years, upgraded to v3000 when the NBX100 HD crashed. v3000 ran version 5.x SW for 6+ months with no issues. "Upgraded" to version 6.x SW - that's when all hell broke loose and system started randomly hard crashing 5+ times per day (have to CTRL-R at console to reset).
Here's what we've tried so far (none of this has resolved the issue):
Rolling back to v5.x
Rebuilding the system from scratch (twice)
Swapping the v3000 chassis and HD with the vendor
Isolating the data and voice networks
Purchasing and installing a 3Com switch for the voice network
Putting the NBX on a dedicated UPS
Any ideas? System is still crashing on average 1-2 times per day. Makes no sense to me...
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If the extension is already in use on the system you wont be able to assign it to another phone. You can change the conflicting Ext. to something else (not in use) and then use the one you wanted. There are also specific ext. ranges that you have to abide by.
This was a rather simple fix. When I was speaking about the NBX V3000, I was talking about our 2U NBX Chassis which holds the line card. When our phone system was installed I wasn't shown the 1U NBX V3000 "Brain". I thought everything was contained in the chassis. Long story, short, I restarted the 1U "Brain" and the system came back up with 5 minutes.
You must make sure to use the correct username. The only username that can be used for administrator is administrator (ALL LOWER CASE). It is case sensative and can not be capitalized. You typically have to open a case with 3Com to get the current password. There is no "backdoor" way to gain access or change the password but if you have console access to the system you can enter the nbxDb command and get an encrypted password. If the system is running a software version 4.0 and older then the password is unencrypted and you are done. I can get the encrypted password decrypted if needed.
Are you trying to forward calls in circular from 1 extension to the next. Like 101 to 102 back to 101. If not I would purge the database and start over. Export user data so you can see the Mac address of each phone and it will be easy to reconfigure the extensions. Do not import the Data. Start from scratch.