UNIVERSAL DOOR ANSWERING SYSTEM
INTRODUCTION
The V-2901 is a Universal Door Answering System
for use with any single line telephone, electronic or
1A2 key system, or PABX. These instructions
contain the specifications and information necessary
to install, operate, and maintain the Universal Door
Answering System.
SPECIFICATIONS
Purpose
Provides remote door answering from a telephone or
telephone system.
VSP-V-2901
Issue 6
V-2901
Applications
• Electronic Key Systems
• PABXs
• 1A2 Key Systems
• Stand Alone Systems
Refer to Figure 1 for a block diagram of a typical
installation.
Features
• Line key access from Electronic or 1A2 key
systems
• Loop trunk port access from PABX
• Dedicated single line telephone access
• Built in handsfree amplifier
• RJ11 modular connector for Tip and Ring
connections
• Power on LED
• Provides contact for electric strike plate
• Programmable door unlock codes (use with tone
dial telephones)
• Input for manual door unlock (push-button)
• Removable screw terminal blocks for all
connections
• Built in (30 Hz) ringing generator (with on/off
switch)
• Ringback tone for speaker
• Works with the Valcom V-1070A or V-1071
door plate speakers
• AC line powered
• Compatible with VPB-260 Battery Back-up
Capacity
• The V-2901 is a single talkpath unit
• Each V-2901 will drive up to 2 Valcom 45 Ohm
Talkback Speakers
Dimensions/Weight
• 8.6" H x 11.0" W x 2.3" D
(21.6cm H x 27.9cm W x 5.8cm D)
• 3 lbs. (1.36 kg)
Specifications
• Input Impedance: 600 Ohms
• Input Level: -10 dBm Nominal
• Output Impedance: 45 Ohms
• Ring Supply: 90VAC, 30 Hz
Interrupted 1 sec. on 4 sec. off
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E-Key
C. O. Line Position
FIGURE 1 - TYPICAL E-KEY INSTALLATION
V-2901
UNIVERSAL
DOOR
ANSWER
UNIT
Door Plate Speaker
Assembly
Speaker
Pushbutton
Power Requirements
• Voltage: 115VAC
or 24VDC Battery Backup
• Power: 25 watts
Environment
• Temperature: 0 to 50 Degrees C
• Humidity: 0-85% non-precipitating
DESIGN
General
The V-2901 Remote Door Answering System when
used with the V-1070A Door Plate Speaker provides
voice paging with handsfree reply to a door. When
the push-button on the door plate speaker is pressed,
the phone system will ring. By answering the call, the
system user can converse with the person at the door.
If the door is equipped with an electric strike plate,
the system user may allow access by dialing a code or
pressing a butto n.
Electronic Key, 1A2 Key or
PABX Access
When using the V-2901 with an electronic key system
or PABX, the following equipment will be required:
1) 1 V-2901 Universal Door Answering Unit
2) 1 Single Line Tone Dial Telephone dedicated
for door answer
3) 1 Valcom Door Plate Speaker (V-1070A or
V-1071))
NOTE: A single line telephone cannot be connected
to both the V-2901 and an incoming central office
line.
INSTALLATION
Connecting Arrangement
If a modular cord is used for Tip and Ring
connections, start at step ONE. For screw terminal
connections start at step TWO.
__1. Connect one end of a modular cord to the
V-2901 RJ11 and the other end to the
appropriate line position of the phone
system. Go to step 4.
__2. Connect Tip of the key system line position
(loop trunk) to Tip terminal of the V-2901.
__3. Connect Ring of the key system (loop trunk)
to the Ring terminal of the V-2901.
1) 1 V-2901 Universal Door Answering Unit
2) 1 C.O. Line Position (Electronic Key System
or
1 Loop Trunk Position (PABX)
1 400 type line card (1A2 key)
3) 1 Valcom V-1070A or V-1071 Door Plate
Speaker
Dedicated Single Line Phone Access
When using the V-2901 with a single line telephone,
the following equipment will be required:
__4. Connect Tip and Ring of the V-1070A Door
Plate Speaker to V-2901 screw terminals
marked SPKR.
__5. Connect Door Button terminals of V-1070A
to V-2901 screw terminals marked DPB.
__6. Turn slide switch SW1 ON if the telephone
system is to ring when the door plate button
is pressed.
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__7. Plug the V-2901 AC Line Cord into
appropriate 115VAC receptacle.
__8. Adjust volume (See "Volume
Adjustments").
Remote Door Unlock with Tone Dial
Telephone
__1. Refer to Table 1 for dip switch settings to
program single digit door unlock code.
__2. Figure 3 shows the V-2901 contact
arrangement available for electric strike
plate operation.
Before connecting an electric lock to the V-2901,
consult the manufacturers instructions for the proper
connecting arrangement.
Remote Door Unlock with
Push-button
__1. Connect single pole push-button to V-2901
screw terminals marked Remote Control
Unlock.
Remote Signaling
__1. The V-2901 contains an auxiliary set of
make/break contacts. These contacts follow
the ringing cycle after the door plate
push-button has been pressed. They can be
used to operate a remote signaling device;
i.e., bell, buzzer, or light. Figure 4 shows a
typical connection using these contacts.
Volume Adjustments
There are three volume controls on the V-2901. Two
are used to adjust the page level to the door and the
handsfree reply. The third control adjusts the
ringback tone to the door plate speaker. See Figure 5
for location.
__1. Phone to Speaker: Adjust this control to give
the desired listening level at the speakers.
Battery Back-Up
A Valcom VPB-260 Battery Back-up may be added
to the system to provide power in case of power
failure. Figure 6 shows the appropriate connections.
The VPB-260 should be allowed to charge for
approximately 9 hours before operating the V-2901.
OPERATION
General
When the door plate button is pressed, interrupted
ring voltage from the V-2901 is applied to a C.O. line
position of the telephone system and a ringback tone
is sent to the door plate speaker for the duration that
the call button is pressed. When the line is answered
the ringing is removed and the handsfree amplifier is
connected.
If the door is equipped with an electric strike plate, a
preset number can be dialed from the tone dial
telephone, operating a relay for 2.2 seconds. The
relay provides make/break contacts that may be used
to operate the strike plate. A single pole push-button
switch connected to the V-2901 can also be used to
manually operate the door unlock relay.
The V-2901 provides make/break contacts that follow
the ringing cycle. These contacts can be used to
operate external signaling devices.
NOTE: Operation is the same when used with all
telephone systems.
TECHNICAL ASSISTANCE
Table 2 identifies symptoms of some possible
problems with solutions.
Assistance in troubleshooting is available from the
factory. When calling, you should have a VOM and a
test set available and be calling from the job site.
Call (540) 427-3900 and ask for Technical Support,
or call (540) 427-6000 Valcom 24-hour Automated
Support or visit our website at
http://www.valcom.com.
__2. Speaker to Phone: Adjust this control so the
reply from the speaker is clear.
IMPORTANT: This is the most critical
adjustment. Set the volume at the lowest
practical level. Setting this control too high
will increase background noise without
giving greater talkback volume.
__3. Ringback Tone: Adjust this control to
produce the desired level of ringback tone at
the door plate speaker when the door plate
push-button is pressed.
Valcom equipment is not field repairable. Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating your company name, address, phone
number, contact person, and the nature of the
problem. Send the unit to:
Valcom, Inc.
Repair and Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
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TABLE 1 - DIPSWITCH SETTINGS FOR DOOR UNLOCK CODES
DIGIT SW1 SW2 SW3 SW4
1
2
3
4
5
6
7
8
9
0
*
#
A
B
C
D
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
OFF
TABLE 2: TROUBLESHOOTING CHART
PROBLEM ACTION
1. No system operation - Power LED not lit.
2. No system operation - Power LED is lit.
3. No paging at speaker.
4. Paging at speaker but no reply from speaker.
5. No system ringing when the doorplate button
is pressed.
6. Door unlock relay does not operate.
7. No ringback tone to speaker when door
button is pressed.
1a. Verify AC voltage is present at the receptacle.
1b. Check the fuse located on the bottom of the unit.
If blown, replace with a 1 amp 250 VAC fuse.
2a. Verify that screw terminal connectors are completely
plugged into circuit board headers.
2b. Refer to Figure 2 and verify all connections.
3a. Check door plate speaker connections.
3b. Refer to Figure 5 and adjust Phone to Speaker
volume.
4a. Refer to Figure 5 and adjust Speaker to Phone
volume.
5a. Refer to Figure 5 and check Ring ON/OFF switch.
6a. Refer to Table 1 and verify dip switch settings.
7a. Refer to Figure 5 and adjust ringback tone volume
control.
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V-2901
TERMINAL
BLOCKS
1
2
3
4
DPB
5
6
7
8
9
10
T
11
R
12
SPKR
13
14
RJ11
CONNECTOR
FIGURE 2
ELECTRONIC KEY SYSTEM, 1A2 LINE BUTTON ACCESS
OR PABX LOOP TRUNK ACCESS
V-1070A
Pushbutton
Speaker
T
R
MODULAR
CONNECTING
CABLE
E-KEY, 1A2 LINE POSITION OR
PABX LOOP TRUNK PORT OR
SINGLE LINE TELEPHONE
E-KEY, 1A2 LINE POSITION,
PABX LOOP TRUNK PORT OR
SINGLE LINE TELEPHONE
WITH MODULAR LINE JACK
(1a)
(1b)
NOTE 1:
Tip and Ring connections can
be made by using cross connect
wire (1a) or by using a modular
cable (1b).
DOOR UNLOCK RELAY
MAKE
STATIONARY
BREAK
DOOR
PUSHBUTTON
REMOTE
CONTROL
UNLOCK
AUX RELAY
BREAK
STATIONARY
MAKE
TIP
RING
SPEAKER
SPEAKER
RETURN
CUSTOMER
PROVIDED
EQUIPMENT
ELECTRIC
STRIKE PLATE
Pushbutton
for Manual
Door Release
(if required)
DOOR UNLOCK RELAY
MAKE
STATIONARY
BREAK
DOOR
PUSHBUTTON
REMOTE
CONTROL
UNLOCK
AUX RELAY
BREAK
STATIONARY
MAKE
TIP
RING
SPEAKER
SPEAKER
RETURN
CUSTOMER
PROVIDED
EQUIPMENT
RING
SUPPLY
FIGURE 3 - ELECTRIC LOCK CONTACT ARRANGEMENT
FIGURE 4 - REMOTE SIGNALLING
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Valcom, Inc. warrants its products to be free from defects in materials and w orkmanship under conditions of normal use and service
VALCOM LIMITED WARRANTY
for a period of one year from the date of shipment. The obligation under this warranty shall be limited to the replacement, repair or
refund of any such defective device within the warranty period, provided that:
1. inspection by Valcom, Inc. indicates the validity of the claim,
2. the defect is not the result of damage, misuse, or negligence after the original shipment.
3. the product has not been altered in any way or repaired by others and that factory sealed units are unopened (A service
4. freight charges for the return of products to Valcom are prepaid,
5. all units ‘out of warranty’ are subject to a service charge. The service charge will cover minor repairs (Major repairs will be
This warranty is i n lieu of and excludes all other warranties, expressed or implied, and in no event shall Valcom, Inc. be
liable for any anticipated profits, consequential damages, loss of time or other losses incurred by the buyer in connection
with the purchase, operation, or use of the product.
This warranty specifically excludes damage incurred in shipment. In the event a product is received in damaged condition, the
carrier should be notified immediately. Claims for such damage should be filed with the carrier involved in accordance with the
F.O.B. point.
charge plus parts and labor will be applied to units defaced or phy sically damaged),
subject to additional charges for parts and labor).
Headquarters: In Canada
Valcom, Inc. CMX Corporation
1111 Industry Avenue 35 Van Kirk Drive #11 and 12
Roanoke, VA 24013 Brampton, Ontario L7A1A5
Phone: (540) 437-3900 Phone: (905) 456-1072
FAX: (540) 427-3517 FAX: (905) 456-2269
Phone to
Speaker
Speaker
to Phone
SW1
Off
On
FIGURE 5
VOLUME CONTROL AND SWITCH LOCATIONS
Tone
SW4
SW3
SW2
SW1
Power
LED
Program Switches
for Unlock Codes
Handsfree Volume
Controls
Speaker Ringback
Tone Volume Control
Bridged
Ring Switch
V-2901
FIGURE 6
BATTERY BACK-UP
.
.
.
.
.
VPB-260
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