AT&T 4.1 Telephone User Manual


 
Combination Extensions
You can connect a standard device on an extension by itself, or have it share an
extension with another piece of equipment. An extension with two devices
connected to it is called a combination extension. Examples of useful
combination extensions include:
System phone plus standard phone for power failure backup on
extensions 10 and 16
System phone plus answering machine
System phone plus fax machine for phone use when the fax is idle
System phone plus headset for hands free operation
System phone plus external alert (such as a bell or chime) to notify users
of incoming calls in noisy areas, such as a warehouse
See “Combination Extensions” in Appendix C and Chapter 3 for guidelines on
installing and using combination extensions.
Overview
1-5