Instruction manual

The 4400-Series Telephone Family
3-14
Installation, SPM, Maintenance, and Troubleshooting Supplement
■ On the 4406D+, 4412D+, 4424D+, and 4424LD+ telephones the jacks
on the bottom accommodate the connection of the handset, the line
cord, and a headset. For the 4424D+ and the 4424LD+ telephone, a
wider jack marked “ADJ” is used to connect a DSS 4450.
Refer to Figure 3-4 for jacks and placement of cords for the 4406D+,
4412D+, and 4424D+ telephones when no auxiliary power is needed.
Figure 3-4. Jacks and Placement of Cords for the 4406D+, 4412D+ and
4424D+ Telephones (when no auxiliary power is needed)
The 4406D+ telephone does not have a jack for the DSS 4450.
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
LINE
Line Cord
(D2R)
Handset Cord
Headset Cord
ADJ