Panasonic KX-TG6500 Operating Instructions Manual page 14

Installation
To connect to 2 single-line telephone jacks
TRANSPARENT
Plug
If you use the unit as a single-line telephone only
TRANSPARENT Plug
14
GREEN
Plug
4-Wire Telephone Line Cord
with GREEN Plugs
2-Wire Telephone Line
Cord with
TRANSPARENT Plugs
2-Wire Telephone
Line Cord with
TRANSPARENT
Plugs
Single-Line
Telephone Jacks
(RJ11C)
LINE 2
LINE 1
Single-Line
Telephone Jack
(RJ11C)
LINE 1