Installation
Installation Manual
37
B: To make 2 CO lines (port1) and 8 ISDN extension (port2) lines
CAUTION
Be sure to turn the power switch "OFF" before you change the jumpers.
1.
Set the jumper covers on the printed circuit board to the "EXT" position as below.
Note
a.
To use ISDN extension lines, an external or internal power supply is required. If you use an
internal power supply, set the power supply jumper cover to the "ON" position as below.
b.
To use ISDN (BRI) ports as CO line ports, set the power supply jumper cover to the "OFF"
position.
2.
Insert the modular plugs of the ISDN (BRI) line cords (8-conductor wiring) into the ISDN
(BRI) ports 1 and 2.
For CO line use
EXT
S0
1
3
1
3
1
3
1
3
SW503
SW502
SW500
SW501
For ISDN extension line use
EXT
S0
1
3
1
3
1
3
1
3
SW503
SW502
SW500
SW501
Jumper Cover
SW505
b. View of power supply jumper
OFF
ON
1
3
SW504
SW505
a. View of power supply jumper
OFF
ON
1
3
SW504
