2-20
Installation
2.3.5
Polarity Sensitive Telephone
Connection
If your telephone is polarity sensitive, follow the procedure below:
1. Complete all the required extension wiring.
2. Confirm that dialing can be done from all the
extensions using a touch-tone telephone.
If dialing fails, the polarity between the
extension and the system must be reversed.
3. Reverse as shown.
4. Unplug the system.
5. Connect all outside lines.
6. Confirm that dialing can be done on the
following extension using a tone telephone.
Extension (T, R) of jack 1•••Outside line 1
If dialing fails, the polarity between the
system and the outside line must be reversed.
7. Reverse as shown.
8. Every time an extension telephone is
replaced, repeat the above procedure.
Central Office Line
Reverse here
Extension
POWER
DIGITAL SUPER HYBRID SYSTEM
1
2
3
4
5
6
7
8
9
0
#
Central Office Line
Reverse here
Extension
POWER
DIGITAL SUPER HYBRID SYSTEM
1
2
3
4
5
6
7
8
9
0
#