I am trying to figure what my extension is? I have an M7208 Nortel

To reset the password on the mail box you need to go to a M7310 phone on your system. It has 3 buttons under the display. You need to press the "Feature" button and 983, then enter the password 120000 (this one is used if you have 2 digit extensions 1020000 is used if you have 3 digit extensions) . Next in the display you will see mbox-AA-othr above the soft keys. Press the button below mbox. Next enter your extension number. After that you should see the screen to reset your password. This will reset the password to 0000. When you go back to your own extension and log in to your mailbox it will prompt you to change your password. If you password120000 or 1020000 doesn't work try 121111 or 1021111, the last 4 digits are the password for the admin mailbox.

Your problem is in the phone system programming. I would need to know how old your main cabinet is in order to tell you how to fix it. On most Nortel systems you use "Feature Key" **266344 (Feature **CONFIG) . You will need to program from a M7310 phone because you need the 3 soft keys under the display which the M7208 does not have. The top 4 keys on the phone are used for programming (2 LEFT & 2 RIGHT) . I'm referring to the 2 vertical rows of keys (5 LEFT & 5 RIGHT). Upper left key is up a menu, upper right key is SELECT, lower left is BACK, and the lower right is NEXT. I believe you need to find the CAPABILITIES menu for your station/extension and use the next button to look for the handsfree setting use the key under the display to change it. The manuals are at http://wedophones.com/Manuals/Nortel/

here's a link/site I found hope tis your system
https://pbxbook.com/norstar/line.html

So is the display not working or are you trying to set up caller ID?

M7208 phones were delivered with the very first Nortel systems and if you have one of those, you're not getting CID. The CICS cabinet or higher requries a CID trunk card and IIRC 5.0 or higher software. If all of those are in place, as a minimum you can press FEATURE 811 to display CID info.

Carl

Nortel M7000 series are proprietary sets which require a nortel MICS, CICS, or an older 8x24, 6x16, or 3x08 in order to work. If you have the system, it maybe that the jack isn't activated with a system port.

If the extension was a swap of the old M7310 with a new(ish) M7310 no additional programming should be necessary. However if the phone was replaced with another type of nortel set(M7208, M7324,T7313 etc.) then the phone will default to its base features. To re-program the feature keys press feature *3, the button you wish to program, and the feature code for that button

The do not disturb might be active on the extension that your trying to transfer to.On the extension that your trying to transfer to, enter feature #85 to cancel out do not disturb.

press feature *0. you can now look at any button on your phone to see what it is, touching the intercom button will tell you your extension

Incoming line ring settings are in the config menu under:
2nd option - Line access
enter extension number
2nd option - Ringing
Ringing then can be toggled on or off for each line assigned to that extension.
Mark

There is a built-in feature called Set Relocation. Check with your system administrator to make sure this feature is set to No. Then you can swap phones without a problem. Good Luck!