Panasonic CPC-EX - Manual (Page 90)

Chapter 4. Trunks and Lines Section 300-Installation
4-42 DBS Manual - Revised April 2000 DBS-2.3/9.2-300
Installation
1. Attach the DSS/72 to the key phone using the mounting plate and the four
screws.
2. Connect the DSS to the key phone using the two-conductor cable.
3. Connect the DSS to the wall jack using a four-conductor cable.
4. Connect the four wires from the key phone and DSS to the MDF.
Figure 4-16. DSS/72 connection using one cable with two pairs.