Algo 3026 User manual

About the 3026 Doorphone
The 3026 Doorphone is a system comprised of a 3004 Door Station and 3025 Control Unit. This
guide applies to the installation of the 3025 Control Unit ith a 3004 Door Station.
The 3026 Doorphone provides intercom capability for a telephone system through a spare trunk
port. The Doorphone emulates a telephone line by providing talk battery and ringing. Calls are
made by pressing the call button at the door station hich causes the control unit to initiate
ringing to the trunk port. Anytime that the trunk port is off-hook, communication is provided
hands-free at the door station.
Installation
The 3026 Doorphone is shipped ith the option s itches and controls preset for optimum
performance and most common configuration. We suggest that the Doorphone be installed and
tested ith these settings prior to any adjustments.
Wiring Requirements
Pre ire at least one pair of 24 AWG t isted ire bet een the control unit location and
telephone system. The control unit must be installed in a dry protected environment (usually
beside the telephone system). The maximum distance bet een the control unit and telephone
system is 1000 meters or 3200 feet.
Pre ire at least t o pair of 24 AWG t isted ire bet een the control unit and door station. The
door station may be mounted outdoors in un-protected areas. Maximum distance is 300 meters
or 1000 feet.
Mounting
Install the door station into a recessed or surface mounted double-gang electrical box of the type
that ould be used for t o light s itches or t o duplex receptacles. A sealant should be used
behind the door station to prevent ater from penetrating behind the door station. The door station
can be used outdoors in ambient temperatures -30 degC to +40degC (-22degF to +104degF).
The control unit is all mounted ithin 1.5m (5ft) of a 120 volt 60 Hz AC receptacle for the
supplied 3242 external plug-in adapter.
Wire Connections
The door station connects to the control unit terminals 1-4. The numbers are identified on both the
door station and control unit.
The terminals marked T and R (tip and ring) connect to the telephone system trunk port. A
modular jack (TEL) is also provided on the rear of the control unit.
The remaining terminals (C, NC, NO) are for door or gate control and are explained in the section
Door Control.
3026 Doorphone
Installation Guide
P.4
DC3026CI-02
AUGUST 28, 2000
Algo Communication Products Ltd. 4500 Beedie Street, Burnaby, B.C. Canada V5J 5L2
el: [phone] Fax: [phone] http://www.algo.ca
Algo Communication Products Ltd. 4500 Beedie Street, Burnaby, B.C. Canada V5J 5L2
el: [phone] Fax: [phone] http://www.algo.ca
P. 1

Testing
With the option s itches and level controls adjusted at factory default:
Spkr Volume: 1/2 turn counter clock ise from fully clock ise position
Mic Sensitivity: 1/8-1/4 turn clock ise from fully counter clock ise position
S itch 1: XXXOOOOO (1,2,3 on - 4,5,6,7,8 off)
S itch 2: OOOOOXOO (6 on, 1,2,3,4,5,7,8 off)
Pressing the call button should turn on the door station light momentarily and cause the
telephone system to ring herever assigned. The s itch 1 settings ill provide a ring cadence of
1.5 sec on follo ed by 3 sec off. (Each s itch position contributes 1/2 sec to the ring cadence and
the cycle repeats every 4.5 seconds). The s itch 2 setting allo s for 5 ring cycles before the
ringing ill stop.
Upon ans er, the ring ill stop and communication is established ith the visitor. Communication
may be established at any time by accessing the telephone system port even if ringing as not
initiated by the call button.
Level Controls
On the rear of the control unit t o controls are provided. Spkr Volume adjusts the speaker volume
and is maximum hen fully clock ise. This control may be adjusted to suit but should not be
turned do n to minimum hen door control functions are used. The factory setting is ideal for most
installations.
The Mic Sensitivity control should not normally be adjusted. This control is factory set for
optimum performance and any adjustment may prevent proper s itching of the speakerphone
circuits.
Option Switches
There are t o option s itches of 8 positions each exposed through the bottom of the control unit.
S itch 1 controls ring cadence pattern and s itch 2 controls the number of ring cycles provided in
response to the call button.
Switch 1:
Each position contributes 0.5 seconds to the ring cycle hich repeats every 4.5 seconds. The
s itch is scanned each cycle and for every s itch position that is on, ring is output. For s itch
positions that are off, no ring is output. There are 256 ring cadence possibilities to distinguish the
Doorphone from other incoming lines hen ring cadence is repeated by the telephone system to
station locations.
Switch 2:
The number of ring cycles can be selected as follo s. If more than one s itch is in the on position,
the lo est position ill control the ring cycles.
Position Position
1 (No ring cycles) 5 Four ring cycles
2 One ring cycle 6 Five ring cycles
3 T o ring cycles 7 Six ring cycles
4 Three ring cycles 8 Nine ring cycles
NONE - NO LIMIT, RING UNTIL ANSWERED
Door Control
The 3026 Doorphone includes a door control relay for telephone systems that provide tone dialing.
Upon detection of the digit 6 from the telephone system the door control relay ill operate for 3
seconds. (This time can be adjusted by opening the control unit and adjusting an orange control.
Time can be adjusted from momentary to about 10 seconds.)
When idle the C (common) terminal is connected to the NC (normally closed) terminal. When the
relay is activated, the C (common) terminal is connected to the NO (normally open) terminal. The
relay can s itch up to 30VDC or 30VAC at 5 Amps. Do not use these contacts to directly switch
mains power such as 120 or 240V C.
These relay contacts are normally used to s itch a customer supplied po er supply to a customer
provided door solenoid or similar mechanism.
Compatible Telephone S stems
The Doorphone is designed to emulate a central office line from the public s itched telephone
net ork. Do not connect the Doorphone to a telephone line. The Doorphone orks ith any
device ith tone dialing that is normally connected to a loop start trunk from a central office. The
current revision C design is compatible ith all kno n brands of PBX and key telephone systems
including Northern Telecom Meridian Universal Trunk Cards.
The Doorphone can also be used on standard telephones, ans ering machines, and cordless
phones provided that these devices connect only to the Doorphone. No line sharing is possible
ithout additional equipment to allo use of these devices for both Doorphone and telephone
net ork, unless a t o line device is used.
Algo manufactures Doorphones for station port applications that provide telephone emulation, as
ell as a variety of products in rack mountable configuration for prison, university, airport and other
applications that require many units.
Electrical Specifications:
Power Supply 120V 60Hz 9W plug in adapter. CSA and UL approved.
Output to Control Unit 24Vd 200mA 2.1mm female plug enter negative.
Maximum input to Control Unit 26Vd .
Talk Battery 24V nominal, 20mA urrent limited.
Impedance 600 ohm nominal
Maximum Distance Tip and Ring DC loop limited to 600 ohms in luding telephone.
Tip and Ring Maximum re ommended distan e is 1 km (3200 ft) twisted pair 24 AWG.
Maximum Distance Maximum re ommended distan e is 300 m (1000 ft) twisted pair 24 AWG.
Door Station
Door Control Relay Maximum voltage 30Vd or 30Va Maximum urrent 5 A.
P.2 P. 3
Algo Communication Products Ltd. 4500 Beedie Street, Burnaby, B.C. Canada V5J 5L2
el: [phone] Fax: [phone] http://www.algo.ca
Algo Communication Products Ltd. 4500 Beedie Street, Burnaby, B.C. Canada V5J 5L2
el: [phone] Fax: [phone] http://www.algo.ca