M7310: Phone number

Are you talking about the DID number that people can dial into you?

You have to get into programming and renumber the extensions. You cant just do your, you will need to do the entire system so everything is uniform.

Sorry about the delay, I lost your post and could not get back in touch with you... This is a case where a certified Norstar tech will come in handy...
OK - lets get started.... Do you have the programming password to get into the system? Do you have the programming template (piece of paper to guide you thru the proper steps in which button to press?)
If you do lets go: Go to a set, hopefully a bigger set with 2 rows of buttons... -> Feature * * 2 6 6 3 4 4 -> is this is a CIC's/MIC's system it will ask for a password see next step, if this is a BCM it will ask you for a User ID:___ your default ID is 738662 -> Password:___ default is 266344
-> now you will see TERMINALS&SETS... keep hitting the NEXT button off the template till you see SYSTEM PRGRMING... -> now hit the ENTER and press the NEXT key till you see CHANGE DN -> now press ENTER this is were you will type in the old extension number (EX:2331) then type in the new extension number that you want the set to have (EX:5331) -> now hit the RLS button... check to see if the number changed but pressing FEATURE * 0 and pressing the INTERCOM key.
Now there are a few things that you have to remember, the voicemail has not been changed, the new extension needs to be programmed into the TARGETLINE for your DID number to ring at your desk, and if you have your extension as a Busy Lamp Field on the front reception, you have to change that to your new extension by going to the receptionist desk: ->FEATURE * 2, pressing your button, and dialing your new extension. -> now to see what your direct number target line is, press FEATURE * ) and press the button for your direct line... and see what LINE number you have, now get back into the system programming and find LINES and type in the number that you found on your phone (EX:255), press ENTER and press ENTER again you should see TARGET LINE. -> Keep pressing NEXT till you seePRIMESET:___ this has your old extension and press CHANGE and type in your new extension. -> hit the NEXT button and RLS -> your voicemail dial FEATURE 9 8 3 If you have a BCM your default LOG:___ is 738662 but if you have a MIC/CIC's system it will say password: default password is 10020000 for a 4 digit extension, 1020000 for a 3 digit extension. But if this a BCM the default password will be 2 6 6 3 4 4 -> press MBOX -> press CHNG -> your old extension -> you should now see PASSWORD press NEXT and you should see your old extension press CHNG and type in your new extension. Hit the next button after inputting this information, until you get back to the MAILBOX ADMIN and hit RLS.

Voila you are done! Good Luck