Northern Telecom 3X8 Owner's Handbook Manual page 130

Notes
The maximum number of digits that Last Number Redial or
Saved Number Redial records is 24.
You can copy the telephone number from a Last Number Redial
or Saved Number Redial button onto an
enter the Last Number Redial or Saved Number Redial feature
code when the
Each telephone can save only one number at a time with Saved
Number Redial, not one number for each line.
PO84262701
You have dialed your own number.
feature asks you to enter a number.
DR5.1 Owner's Handbook
Dialing 125
button. Simply