We have a Lucent partner 18-d phone system. Display is telling us to replace systembattery. We cannot locate this.

http://www.wedophones.com/Manuals/AT&T/Partner%20II%20R4-1%20Programming%20and%20Use.pdf

The system batteries are located on the main processor card of the telephone system. there is a door on the lower end. behind the slide door are 2 AAA batteries.Replace them with the power on.
Changing the time on a Partner system is done on either ext 10 or 11. At one of those ext's press the feature key and "00"
next press the left hand intercom twice
the display should say system programming
enter in "#103"
the display should say system time and the current programmed time
enter the new time in 24 hour format
press feature "00" to logout
And finally here's a link to a Partner ACS 3.0 manual: http://www.wedophones.com/Manuals/AT&T/Partner%20ACS%20R3-0%20Programming%20and%20Use.pdf

www.telemanuals.com

type in partner 18 in the search engine

its not free i`m afraid but i hope this helps

Changing the time on a Partner system is done on either ext 10 or 11. At one of those ext's press the feature key and "00"
next press the left hand intercom twice
the display should say system programming
enter in "#103"
the display should say system time and the current programmed time
enter the new time in 24 hour format
press feature "00" to logout

Try here!
http://support.avaya.com/japple/css/japple?PAGE=Product&temp.productID=107628&temp.releaseID=194851

To change the System Time:

1. Press feature +(00)+(left intercom)+(left intercom)+#103 at extension 10 or 11.
2. Enter a new time in 24-hour notation. For example, to set the time to 2:15 p.m., press 1415.
   A display similar to the following appears:
   System Time
   Data 1415
   This time appears on system display phones as 2:15 p.
   
   to program speed dials, press feature + (00)
   press the button you want to program
   dial the number you want programmed, then press feature 00

Obviously you lost your programming. Question is whether the unit is operational. Best thing to do is contact your local Avaya Business Partner for a repair.
If you tell me your location, I can recommend one.

You can tell at any display phone, by pressing Feature 59.

If that doesnt tell you, or you don't have a display phone. Look here.

http://dstech1.com/what-release-partner-system-do-i-have/

Partner Beep test.

On extension 10 or 11 press Feature 00
Left intercom, left intercom, right intercom
Enter your extension number
Press line buttons until its a fast blink and display say no ring
Feature 00

only transfered calls will ring

from extension 10 or 11.

feature 00
pres the speed dial you want
feature 600, thype the number in.
repeat for as many as you want to modify
when done, press feature 00