AT&T Door Phone Controller operation manual When door ajar switch is not

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			o r	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