I have Norstar M7310 and and having problem with features being read as inactive like 981, 983 and 986 please advise.

Hello.

The Norstar M7310 telephone from Nortel is an integratedcommunication system that includes background music, custom call-routing andthree distinct dialing modes. It is commonly used in office settings where highercall volumes requiring multiple lines. Nortel provides an online forum thatfeatures technical support and several downloads for the M7310 model, which canmake troubleshooting the phone a fairly easy process. Some of the most notableissues faced by users involve the handset, headset, speaker and display, andmost can be easily diagnosed by following a few steps.
1 Press "Feature+8+0+5." Press "Next" until the displayreads "Headset Test." Press the "Test" button to performthe headset test. Listen for a dial tone. If audible, the headset is in properworking order, and the system volume will be restored to the default setting.End the test by pressing any button.
2 Press "Feature+8+0+5." Press"Next" until the display reads "Display Test." Press"OK" to begin testing. Check to see that the display is completelyfilled in with dark colored squares. Ensure that the indicator light that islocated next to each button is lit up. If so, the display is functioningproperly. End the test by pressing any button.
3 Press"Feature+8+0+5." Press "Next" until the display reads"Handset Test." Press the "Test" button to perform thehandset test. Remove the handset from the cradle and listen for a dial tone.During the test, the unit will function at maximum volume. If a dial tone isheard, the handset is working correctly. End the test by pressing any button orplacing the handset back on the cradle. 4 Press "Feature+8+0+5."Press "Next" until the display reads "Speaker Test." Pressthe "Test" button to perform the test. Listen for the speaker to emita page tone at the system's maximum volume. The speaker is functioning properlyif the page tone is audible. End the test by pressing any button. Thanks.

Hello

This generally happens from one of two things. Your voice mail system is connected to your phone system through a station port. If it loses connection it will not communicate with the phone system. Loose wire or connection can cause this. or it has just crashed and will need repair or replacement.

First thing you want to do is unplug the unit wait 15 minutes and plug it back in. wait 10 minutes Try feature 981 from a set that has voicemail. if nothing. hit feature 985. If it comes back with inactive feature now your connection between the units is bad or the unit itself is bad. If it comes back with the voicemail intercom # and you cant get into any mailboxes it has lost all programming.Try this first.