Display on nortel T7316E shows Services ON instead of date and time. How do I remove this?

SOURCE: how can i remove the "do not disturb' features in my phone Nortel T7208

hey i have the solution. push the function button, then pound, then 85. hopes this helps. i had the same problem and i worked for me

SOURCE: time change

Below is a link to instructions on how to change the time on a Norstar system

Norstar Time change

SOURCE: How to change time on my T7316E Nortel phone

Step 1
Press the FEATURE key followed by **8463
Password Retry Step 2
Press 266344 on the dial pad buttons to enter the DEFAULT password. Your password MAY BE DIFFERENT! The display will show the following options:
Hour: 01 Next Change Step 3
Select CHANGE - the display will show the following options:
Hour: __ Cancl Step 4
Use the dial pad buttons to enter the hour. You must use two digits for all hours (i.e. "08" for 8 o'clock). You will be prompted to enter AM or PM. Select CHANGE and OK to choose PM. AM OK Change Step 5
After you have entered the hours, select NEXT. The display will show minutes as 00. Use the dial pad buttons to enter the minutes. If you are just changing the time, press the RELEASE (RLS) button to end your session. The time will be changed and the date will remain the same.
If you want to change the date, select NEXT.
Minutes: 00 Next Change Step 6
The display will show 99 as the year. Using two digits, enter the year using the dial pad buttons (i.e. "05" for 2005).
Select NEXT, and repeat to change the month and the day.

Year: 99 Next Change Step 7
Once you have entered the day, press the RELEASE (RLS) key to end your session. This will save the changed time and date.

SOURCE: change extension number on Nortel T7316E model

Well ~ eagleeigh731 has it mostly correct, do what he said to do and get into the programming --> find SYSTEM PRGRAMMING --> hit next until you find CHANGE DNs--> OLD DNs (this is the old extn#) 222 then type in NEW DN 431--> then hit the end or release button.
Voila your new extension is now there... to check dial FEATURE 0 then press the intercom button, the new extension should be there.

SOURCE: Nortel T7316E need to reset all the password

How to Change a Mailbox Password 1. To access the voice mail system press Feature.
2. Press 9 8 3.
3. When you see Log: enter ~ SETNNA (738662) and press OK
4. Pswd: CONFIG (266344)
5. Press "MBOX".
6. Press "CHNG".
7. Enter the mailbox number you wish to reset.
8. Press "Reset".
9. Press "Rls" to exit (orange button to the right of the number buttons).
Default password is "0000".