Panasonic KX-TD612 Getting Started page 6

Connections
CO Line Connection
1. Insert the modular plugs of the ISDN (BRI) CO line cords (8-conductor wiring) into the ISDN (BRI)
ports 1 and 2.
2. Connect the line cords to the terminal board or the modular jacks from the Central Office.
6
To Terminal Board or
Modular Jacks from
the Central Office
A. When your system is at the end of the connection
Terminal
Equipment 7
B. When your system is not at the end of the connection
TR
Terminal
Equipment 7
• When making a point-to-multipoint connection, we recommend you use
connection A above because your system has a terminal register (TR) included.
When making connection B, please consult your dealer to remove the TR in your
system.
ISDN (BRI) ISDN (BRI) ISDN (BRI)
Port 1 Port 2 Port 3
Terminal
Equipment 1
Terminal
Equipment 1
TA RA RB TB
To Central Office
Network
Termination
To Central Office
Network
Termination