Nortel Meridian 1 Replacement Manual page 17

Procedure 2
Access through the maintenance telephone
1 Press the prime DN key.
2 Place the set in maintenance mode by entering
xxxx91
3 Check for busy tone by entering "return"
##
a) If there is no busy tone, go to Step 5.
b) If there is a busy tone, a program is active. To end an active
program and access the system enter
****
4 Load a program by entering
53#xx##
5 Perform tasks.
6 Enter **** to exit the program and return the telephone to call
processing mode. Background routines are then loaded automatically.
Accessing the system
"xxxx" is the customer Special Prefix (SPRE)
number. It is defined in the Customer Data Block and
can be printed using LD 21. The SPRE number is
typically "1" (which means you would enter 191 ).
"xx" represents the number of the program
Page 17 of 362
Hardware replacement