AT&T Door Phone Controller Installation And Operation Manual page 79

Table 7-1. Troubleshooting Procedures (Continued)
Trouble
Getting door-ajar callback
when door ajar switch is not
used
Receive C.O. call waiting
tone when accessing the
Door Phone Controller but
cannot dial and/or hook-flash
to connect to call
Cannot open door remotely
using Touch Tone door
unlatch function
Cannot open door remotely
using remote door open
button
Possible Cause
Missing jumper on terminal
block.
Door Phone Controller optioned
for dedicated mode instead of
Trunk Saver or Port Saver Mode.
PBX does not relay the hook-
flash.
Door Unlock option disabled
o r
Wrong Door Code.
Check all wiring from AT&T
Door Phone Controller to electric
strike plate device (see
manufacturer's instructions).
Check all wiring from AT&T
Door Phone Controller to electric
strike plate device, also check
operation of electric strike plate
device (see manufacturer's
instructions).
Possible Solution
Jumper pins 8 & 9 of terminal
block.
Verify DIP switch positions.
Use in dedicated mode.
If error tone, verify Door Open
Code and Door Unlock enable
option.
Disconnect wires from the
terminal block "Door Unlatch
Contacts." Use volt/ohm meter
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.
Disconnect wires from the
terminal block "Remote Open
Button" and "Door Unlatch
Contacts." Use volt/ohm meter
to check continuity between
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