Instruction manual
Features
The following features can be programmed only through centralized telephone
Programming (not by individual users):
■ Barge-in
■ Headset Hang Up
■ All SA buttons (Hybrid/PBX mode) and ICOM buttons (Key and Behind
Switch modes)
Extension Programming
Extension Programming allows telephone users and system operators to
customize their telephones to meet personal needs. Multiline telephone users
can assign a wide range of features to buttons on the telephone. Many other
features that do not require button assignment can be programmed on both
multiline telephones and single-line telephones.
Users can program their telephones by dialing programming codes or, on MLX
display telephones, selecting features from the display. When a telephone is in
program mode, the system considers it busy; therefore, no incoming calls ring
at the telephone until it is back in the call-handling mode. See Appendix C,
“General Feature Use and Telephone Programming,” for instructions on how to
program features on MLX, analog, multiline, and single-line telephones.
382 Programming