Installation guide

TROUBLE ON SEVERAL TELEPHONES
Dialing
Symptom: Dial tone is not present on a particular line but is heard on other lines.
Possible Cause
Recommended Action
1.
Local telephone company line
1.
Verify local telephone company line operation
is faulty.
by plugging in a basic telephone at the
network interface or jack field line jack.
If dial tone is not present, arrange for the local
telephone company to repair the line.
2.
Wiring between the network
2.
Make sure wiring between network interface
interface and the control unit is
and control unit is not damaged.
faulty.
Make sure connectors are plugged in
securely.
3.
Control unit is defective.
3.
Make sure all cords are labeled before
unplugging them from the control unit.
At the control unit, unplug the line cord for the
line with trouble. Plug a line cord for another
outside line into that jack. See if the outside
line will ring. If it will not, the control unit will
probably require repair. If the system is a
Model 820, the Line Module may be defective.
B2-3