User guide

Troubleshooting and Repair
147
Troubleshooting
and Repair
Analog phone troubleshooting
Table 7: Analog phone troubleshooting
Unable to place calls
from an analog phone.
Faulty connection at the
extension.
Ensure that the line cord is prop-
erly connected to the wall and
phone sockets.
Replace the line cord.
Faulty programming. Verify that your number plan,
extension groups, and second-
ary number plan are pro-
grammed correctly.
See Modify the extensions and
system directory (p. 50).
Faulty phone. Replace the phone with a known
working phone of the same
model to determine if the phone
is faulty.
Faulty connections at
patch panel.
Check the cable that connects
the 3100 ICP ONS port to the
patch panel. Check the termina-
tions.
Faulty wiring between
system and phone.
Disconnect the extension cable
from the ONS port on the sys-
tem and plug a phone directly
into the ONS port.
If the phone works when it is
connected directly to the ONS
port, check the building wiring,
especially for loose connections
at terminations.
Faulty ONS module or
faulty controller (two
ONS ports are provided
by the control board in
the system controller)
Power down the system. If the
faulty ports are on an ONS mod-
ule, remove and replace the
suspect ONS module. See
Installing option modules (p.
119).
If the ONS ports are on the con-
troller, replace the controller.
3100 Hand.bk Page 147 Monday, August 19, 2002 8:49 PM