Panasonic KX-TD816 User Manual page 15

Method 2
4-conductor wiring cord
Connect pins "T," "R," "D1"
2-conductor wiring cord
Connect pins
Single Line Telephone
Method 3
Digital Proprietary Telephone
Overview
and "D2."
"T" and "R."
Digital Proprietary
Telephone
4-conductor wiring cord
Connect pins "D1" and "D2."
1.4 Adding Another Telephone in Parallel
<Back of the KX-T7400 Series DPTs>
<Back of the KX-T7200 Series DPTs>
To system To single line telephone
LCD ADJ
PUSH
TO EMSS TO TEL
2-conductor wiring cord
Connect pins "T" and "R."
Single Line Telephone
To single line
telephone
To system
15