Instruction manual

The 4400-Series Telephone Family
3-9
4400-Series Telephones
Figure 3-1. DSS4450
Connecting the DSS 4450 and Auxiliary
Power Supply Unit to the Telephone
3
You may connect up to two Direct Station Selector (DSS) 4450s to a 4424LD+
or 4424D+ telephone. Use the “ADJ” jack on the bottom of the telephone for
this purpose. The 4412D+ also has a jack marked “ADJ”; however, the jack is
reserved for future use and cannot be used to connect a DSS 4450.
Use only the 8-position (D8Y) cord packaged with the DSS 4450 to
connect it to a 4424D+ or 4424LD+ telephone or to another DSS 4450.
DSS4450
LEDs
(50)
Line
Buttons
(50)
Page
Buttons
Message
Status
Button
Reserved
Buttons