Go to any telephone and dial the following:

HOLD  * # * # 1 * 2 * 3 *

At the password prompt, enter your password (call Teleco if you do not know what this is at 601.853.7616) then press HOLD.

At the PROG prompt, enter  902 then HOLD

Press the bottom button and enter the date...for April 1, 2003, enter 030401 then press HOLD.

Press the second button and enter the time in 24 hour format.  for example 1:10:00 PM = 131000

(Enter two digits for the hour, two digits for the minutes and two digits for the seconds (in military format).

  Press HOLD twice

Then press # # HOLD

Then lift the handset momentarily.