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Table 7-1. Troubleshooting Procedures (Continued)
Trouble
Possible Cause
Possible Solution
Getting door-ajar callback Missing jumper on terminal
Jumper pins 8 & 9 of terminal
when door ajar switch is not
block.
block.
used
Receive C.O. call waiting
Door Phone Controller optioned Verify DIP switch positions.
tone when accessing the
for dedicated mode instead of
Door Phone Controller but
Trunk Saver or Port Saver Mode.
cannot dial and/or hook-flash
to connect to call
PBX does not relay the hook-
Use in dedicated mode.
flash.
Cannot open door remotely
Door Unlock option disabled
If error tone, verify Door Open
using Touch Tone door
or
Code and Door Unlock enable
unlatch function
Wrong Door Code.
option.
Check all wiring from AT&T
Disconnect wires from the
Door Phone Controller to electric
terminal block “Door Unlatch
strike plate device (see
Contacts.” Use volt/ohm meter
manufacturer’s instructions).
to check continuity between
NO and C terminals while
activating Touch-Tone door
unlatch function. If continuity
test fails, return AT&T Door
Phone Controller for repair.
Cannot open door remotely
Check all wiring from AT&T
Disconnect wires from the
using remote door open
Door Phone Controller to electric
terminal block “Remote Open
button
strike plate device, also check
Button” and “Door Unlatch
operation of electric strike plate
Contacts.” Use volt/ohm meter
device (see manufacturer’s
to check continuity between
instructions).
both wires from the remote
open button while activating
the button. If continuity test of
button is good, button is OK.
Now reconnect button wires to
“Remote Button Contacts,”
and check continuity of “Door
Unlatch Contacts” (between
NO and C) while activating
remote door open button. If
continuity test fails, return
AT&T Door Phone Controller
for repair.
Troubleshooting and Maintenance 7-3