Installation
Installation Manual
29
2.2.5
ISDN (BRI) CO Line Connection Structure
The possible connection structures of ISDN (BRI) CO Line, depending on the contract, are
shown below. Because the terminal resistor (TR) must be placed at the
end of the connection, we recommend the A or B-1 connection. (Your system has a TR (100
) included.)
A: When your contract is point-to-point
B: When your contract is point-to-multipoint
B-1) Your system is at the end of the connection
B-2) Your system is not at the end of the connection
CAUTION
Please consult your dealer to make a B-2 connection to remove TR on a printed circuit
board (PCB) in your system.
To Central Office
Network
Termination
Terminal Equipment 7
Terminal Equipment 1
To Central Office
Network
Termination
Terminal Equipment 7
Terminal Equipment 1
To Central Office
Network
Termination
TR
