Nitsuko Digital System DS Administrator's Manual page 231

System Options
Understanding Related Programming
Program 10
Part II: DIGITAL SYSTEM Programs
Program 5: PBX Access Codes
-If you finish and do not see, "SAVE TO EXIT":
Press SAVE before step 5.
Select an option:
5.
To enter another program: Press its key.
OR
To exit the program mode: Press SAVE once.
To identify a line as a PBX line
215