Nortel Meridian 1 Planning And Installation Manual page 330

Chapter 17 — Connecting the telephones
3 Enter the customized extension number and press the pound
key.
You hear relocation tone. The character display shows "OK".
OR
If the extension number is already in use by another telephone, you
hear special dial tone again. The character display shows
"MULTI-LINE, EXTENSION?".
OR
If the extension number is not available for use, you hear overflow
tone. The character display shows "ERROR, EXTENSION?" and you
must repeat this step.
Note: If other keys require secondary extension numbers, you are
prompted until you enter all of the required extension numbers for the
model. These extension numbers cannot be defaulted. The text display
prompting for further extension numbers is "KEY kk EXT?" where "kk"
represents the key number requiring the extension number. Each prompt
for another extension number is accompanied by special dial tone. When
you are programming an extension number, the lamp associated with that
number on the telephone is lit.
4 Hang up the telephone handset.
After approximately 10 seconds, the telephone is configured.
Note: If you replace the handset before you complete the prompt
sequence, the installation automatically fails. This can be useful if you
make an error and want to restart the procedure.
—————————— End of Procedure ——————————
Option 11C Mini Planning and Installation Guide
Page 309 of 590