We have a Nortel Networks phone system and when trying to transfer a call to voicemail it says "Inactive Feature". I can't seem to find anyone to help.

SOURCE: inactive features

Is the phone system working but the voicemail did not come back up ? Can you tell me what kind of voicemail you have, ist should be marked on the voicemail system ?

SOURCE: Also trying to initialize voicemail, says Feature 983 inactive

Feature 983 gives cess to System Administration; This Feature will ask for a Log:

Feature 981 Opens A Mailbox your mailbox # should consist of three digits. First what is the name of your mailbox system?

SOURCE: Norstar Flash problem

Cycle the power on the voicemail system. If that does not work, you may have to replace the voicemail power supply, or send the voicemail system for repair.
Good Luck!

SOURCE: I have nortel phone system, voicemail is not working at all and feature 981, 983, 985 all say inactive feature--how do I reactive the voicemail??

Dear Annabelle,
Is the machine call pilot 100 or 150.if 100 the 2 leds in your left hand side should be on also in your right hand side the middle led should be on same for 150 the 4 leds in your left hand side should be on.1) Try to unplug the power cable and re-connect it again.2) Make sure that the the output telephone cable [100 (2 pair) or 150 (4 pair)] depends on the device comming from the call pilot to the Nortel PABX connected properly from both sides. dont hesitate to contact me if you are facing any doubt.Goodluck and Kind Regards;
Ahmed Safaa El-DeebTelecom & Network Engineer