Panasonic KX-TD500 Installation Manual page 108

2.4 Extension Cards
Parallel Connection - DPT
Any Single Line Telephone can be connected parallel with Digital Proprietary Telephone as
follows:
To DHLC card
108
Modular
T-Adaptor
4-conductor
wiring cord
Digital Proprietary Telephone
KX-T7220
KX-T7230
KX-T7235
KX-T7250
KX-T7420
KX-T7425
Panasonic KX-J66
or
USOC RJA2X
2-conductor wiring cord
Single Line Telephone
KX-T7431
KX-T7433
KX-T7436
KX-T7450
KX-T7451
Installation