Tropical Telecom 1820A Installer/User Manual

Tropical Telecom

334 Lala Place,

Kailua, Hawaii, USA 96734

Ph: 808-263-1222 www.troptel.com

Figure 1. (Left to Right)

1820A Interphone Master

4010D Intercom Station

4012B Doorphone Station

1. Introduction

1.1 The 1820A Interphone system provides doorphone and intercom service. It integrates existing

home or office telephones and a phone line with up to six intercom or doorphone stations. The 1820A

is FCC Part 68 registered in compliance with US law.

1.2 A user at a door station pushes the call

button and all telephones in the house ring

with a distinctive cadence. The call is

answered by picking up any ringing phone.

There are no codes to dial or buttons to

push.

1.3 The 1820A interphone system shares

the telephones with an outside phone line.

To make an outside call, the user picks up

the handset and dials as through the 1820A

were not there. If an outside call comes in

during a doorphone call, the user hears a

call-waiting alert tone every few seconds.

1.3 The 1820A Interphone also provides

selective (dial-up) intercom service between

the telephones and wall intercom stations.

A user may chose to operate intercom

stations in either hands-free or privacy

modes.

1.4 Telephones used with the 1820A are

regular, single line, off-the-shelf phones.

1.5 The system uses TropTel’s model 4012

hands-free stations for door access

intercom service. $0102 stations are

available in 5 finishes.

1.6 The system uses TropTel’s model 4010D

intercom stations for indoor service.

1.7 Both 4012 and 4010 stations flush

mount in standard electrical j-boxes and are

wired with a single CAT-5 telephone cable.

PARA

Tabl e o f C ont e nts

PAGE

1. Introduction 1

2. How to Use the 1820A

2.1

2.2

2.3

Regular Telephone Calls

Doorphone and Intercom

Door Strike

2

3. Intercom Operation

3.1

3.2

3.3

3.4

3.5

3.6

Types of Intercoms in the 1820A

Doorphone Intercom

Phone-to-Phone Intercom

Selective Intercom Service

Voice Paging from a Telephone

Transferring Calls to another Phone

2

3

4

4. Technical Description

4.1

4.2

4.3

Connection Panel

Phone Line Details

Ringing Options, Chime Settings

4

5

5 Installation

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

Mounting the 1820A

Power Input

Wiring the 1820A

Installing Connectors

Installation Kit

Door Chime Wiring

Installing door and intercom stations

Wiring for two phone lines

6

7

8

9

6. Warranty 9

7. Specifications 10

8. FCC 10

1820A

Interphone System

Installer/User Manual

Z-1820A-13

15SEPT06

T

TROPTEL

Tropical Telecom

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2

1.8 TropTel’ systems work with homes traditionally wired (looped from phone to phone) and new

houses with mod e rn ( ho m er u n) CAT5 structured wiring.

1.9 The 1820A unit provides power for door and intercom stations over the connecting CAT-5 cable.

Regular telephone service is maintained during power outages by TropTel’s life-line circuitry.

How to Use the 1820A Interphone

2.1 Regular Phone Calls

2.1.1 An incoming call from the telephone line rings the house telephones in the normal ringing

cadence. Lift the handset and speak as with any other call. No commands or codes are required. The

1820A is transparent to regular phone calls. If you have Caller ID service, the calling number and/or

name will be displayed just as if the 1820A were not there.

2.1.2 To make an outside call, go off-hook and dial the number. You will hear Telephone Company dial

tone as soon as you lift the receiver. You do not need to dial 9 or any other code.

2.2 Intercom and Doorphone Calls

2.2.1 When any phone rings in a ring-ring, pause, ring-ring cadence, it is signaling a doorphone or

intercom call. Lift the handset and talk to the caller. No commands or push-to-talk switches are

necessary.

If you have door chimes in your home they may operate on doorphone calls. See sections 4.3.5 and

4.3.6 for chime options.

2.2.2 If a regular phone call arrives while you are on a doorphone call, you will hear a call waiting

alert tone in your handset. Finish the doorphone conversation and then press #. This releases the

doorphone and connects you to the outside phone line. At the end of the call, hang up as with any

telephone call.

2.2.5 If a doorphone call arrives while you are on a regular phone call, you will hear a call waiting

alert tone in your handset. Tell the phone caller that you are placing the call on hold, and then press

#. This connects you to the doorphone. While the phone call is on hold, the caller hears a beep every

5 seconds advising that the call is still alive.

2.2.6 After completing the doorphone conversation, press # again to release the doorphone and

reconnect to the original phone call. At the end of the call, hang up.

2.3 Electric Door Strike Operation

2.3.1 While talking to the doorphone, press * to operate a remote lock (electric door strike). A

short confirmation tone is heard and the 1820A sends a 3 second open-door command to the

doorphone and door strike. The door strike feature works with both Front and Rear doorphone jacks.

See section 4.1F.

2.3.2 If you have a telephone call on hold when you press the door release command (*) you are

automatically reconnected to the telephone call.

3. Intercom

3.1 Introduction

The 1820A provides the following Intercom services:

1. All-call intercom from door stations to home or office telephones.

2. All-call intercom from intercom stations to the home/office phones.

3. All-call intercom among the home or office telephones.

4. Selective intercom from any telephone to an intercom station.

5. Voice Paging over the whole house audio system or a P.A. system.

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3.2 Door Station All-Call Intercom

3.2.1 Push the call button on the door station and all home or office telephones ring with a distinctive

cadence. Pick up any ringing phone and speak with a caller at the door.

3.2.2 Doorphones originate calls but do not receive calls.

3.2.3 The telephone that answers a call is only connected to the doorphone that

initiated the call. However, if during a doorphone call, the button of another door

station is pushed, that station is conferenced with the existing doorphone call.

3.2.4 Tropical Telephone doorphone service is two-way full duplex like a regular

telephone call. Push-To-Talk buttons or archaic “Over-to-You” commands are not

needed.

3.2.5 TropTel 4012 doorphones may be used indoors as one-way all-call intercoms. Install one near

the guestroom bed or as an elder-room station. Pushing the call button rings all the phones in the

home. Conversation is hands free and the station resets automatically at the end of the conversation.

A green LED night light makes the phone easy to find in the dark.

3.2.6 4012 stations originate calls to the phones but cannot be called from the phones. Only 4010D

intercom stations may be called from the phones as described below in section 3.4.

3.3 Using the House or Office Phones as Intercoms.

To make a phone-to-phone intercom call, go off hook, dial #9 and hang up. All

phones will ring. Wait until the ringing stops. That indicates someone has

answered. Lift your handset and join the conversation.

3.4 Selective Intercom to Individual IC Stations

3.4.1 A powerful and useful feature of the 1820A is that the telephones can select each 4010D

Station individually.

3.4.2 To make a selective intercom call, dial # plus the number of the intercom station. E.g. # 3.

3.4.3 Hands-Free Mode. In this mode, the 4010D intercom answers a call by automatically turning

on the station’s microphone and speaker. This allows the caller to voice page over the 4010D

station’s loudspeaker and receive a reply without requiring any action from the person answering the

call. Hands-free mode also allows remote monitoring of the area near the intercom station.

3.4.4 Hands-free mode is useful for kitchen phones so someone preparing food need not worry

about smearing pie dough over the interphone station. It also allows monitoring an infant’s room or

nursery. Hands-free may be appropriate for an invalid’s room. Another application is as a security

monitor: “HEY YOU! Get out of the garage.”

3.4.5 Privacy Mode. In 4010D Privacy Mode, you hear telephone ring-tone over the loudspeaker

when the station is called. The microphone activates only when a person at the 4010D pushes the

CALL/ANSWER button. Once the button is pushed, the conversation continues hands-free. Push-to-

Talk switches are not required. Privacy mode assures a visiting parent in the guestroom that no one

is eavesdropping on them. Teens appreciate privacy mode too.

3.5 Voice Paging over a Music or PA system.

3.5.1 If the residence has a “whole-house” music distribution system, it may be used to make voice

pages. This feature uses any home telephone and a TropTel 3810A, Bogen or similar paging interface. A

user makes a voice page and hangs-up. The person paged may reply over the intercom.

3.5.2 To make a voice page, go off-hook on any telephone and dial, # 7. (7 is the P key on the phone.)

That connects the phone to the Paging Port. A Tropical Telecom 3810A paging adaptor provides a

technical interface between the 1820A and most types of paging systems. (See TropTel Z-3810A-01.)

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3.5.3 At the end of the page, hang up. If someone wishes to reply to the page they will call on the

intercom.

3.5.4 An alternative voice paging technique uses Tropical Telecom’s 3002 Acapulco self-contained

paging system. The Acapulco plugs directly into the 1820A’s Paging Port, so installation is very simple.

3.6 Transferring a Telephone Call to Another Phone.

3.6.1 Suppose you answer a phone call and the calling party wants to speak to someone else? Call the

other party over the intercom and then transfer the call to that party’s telephone.

3

.6.2 Here is how to do it: Tell the caller you are placing them on Hold. Then, on your telephone

keypad, press * plus the number of the 4010D intercom station you wish to call. For example,

dial * 2. This puts the incoming phone call on HOLD and initiates an intercom call to a specific 4010D

station.

3.6.3 Tell the party at the 4010D that you will transfer a call to his or her telephone.

3.6.4 Hang-up. That causes all the phones to ring (including your own). When the phones stop ringing,

it means the other party has picked up the transferred call.

3.6.5 If, for some reason, the other party does not pick up the phone and it keeps ringing, pick up

your own phone and you will be reconnected with the calling party on the phone line.

4. Technical Description

4.1 Connection Panel Details

A. BLUE LED: Indicates power is applied to unit.

B. 24VAC: power input jack.

C. CHIME F T R: Door chime screw terminal block. Markings are:

F for Front door chime.

T for Transformer (chime’s power connection).

R for Rear door chime.

D. OPTION SELECT chooses ringing options. Set per Table in section 4.3.

E. DOOR AND IC PHONES are RJ-45 jack connections for the six Interphone stations.

The jack number is the code dialed to select the intercom station plugged into the jack.

F. INTERCOM 1 thru 6 are universal jacks used for either intercom or doorphone service.

Intercom jacks FRONT 5 and FRONT 6 provide additional door station features.

G. FRONT 5 is the front doorphone. Using this jack causes the front door chime to sound if

that option is chosen. FRONT 5 supports remote door strike operation.

H. REAR 6 is the rear doorphone. Using this jack causes the rear door chime to sound if

that option is chosen. REAR 6 supports remote door strike operation.

I. PAGE is the RJ-14 jack used to connect to the 3810A or Bogen voice paging adaptor.

J. HOUSE PHONES is a RJ-14 jack used to connect the daisy-chain of house or office phones.

K. TEL LINE is the RJ-14 jack connecting the 1820A to the line(s) from the telephone company.

1820A Connection Panel

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4.2 1820A Phone Line Technical Details

4.2.1 When a doorphone or other intercom call is made, the 1820A removes the telephone line from

the house phones and monitors the line with a ring detector. If a phone call arrives during an

intercom call, the ring detector senses the incoming call and sends a beep tone to the intercom

connection as a call-waiting alert.

4.2.2 If, during a regular phone call, a doorphone call is initiated, the phone user hears a call-

waiting alert (beep tone). If the phone user ignores the doorphone call, the door station disconnects

automatically after 30 seconds.

4.2.3 Because the house phone wiring is shared between phone calls and intercom calls, you cannot

simultaneously make 2 two independent calls. It is an either/or arrangement. You can talk to the

phone bus or to the intercom bus. See Fig.2B on page 7.

4.2.4 When a doorphone makes a call, ring back tone is sent to the door station until a telephone

station answers or until the call times out.

4.2.5 If another doorphone call arrives when you are already on a doorphone call, both door stations

and your telephone are conferenced together. All three parties can talk to each other.

4.3 Ringing Options and Cadences

4.3.1 Phone Line. Ringing from the telephone company is simply passed to the phones by the

1820A. So, outside calls ring at the familiar 2sec.on/4sec.off cadence.

4.3.2 Doorphones and Intercom Stations use the 1820A’s internal ring generator. Normal

doorphone and intercom ringing is a ring-ring pause ring-ring cadence. Often called UK or British

style ringing, it differentiates internal calls from telephone line calls.

4.3.3 A few older answering machines count the UK ring-ring as two cycles rather than one. That

means the answering machine answers after only two cycles of a doorphone call. In this rare case,

see table below, and set switch #1 to OFF. That sets a long ringing cadence for doorphone calls.

(3Sec. ON/4Sec. OFF

4.3.4 Option switch #4 allows doorphone calls to ring for either 3 or 5 ring cycles before timing out.

Five cycles is about 30 seconds and is the standard ringing length.

4.3.5 Users with a telephone answering machine (TAD) often do not want the answering

machine to record doorphone calls. If you set option switch #4 to ring for 3 cycles and set the

answering machine to reply after 4 ring cycles (see the User Manual of the TAD), the answering

machine will ignore the door station and only record telephone line calls.

4.3.6 If the home has a door chime system, you can set the 1820A so door phone calls will ring

the chimes only, phones only, or ring both telephones and door chimes. See settings of Switches #

2 and #3 in the table above.

ON

OFF

OPTION SELECTION

DIP SWITCH

1234

Ring Phones Only: Switch #2 OFF

Switch #3 OFF

Ring Chimes Only: Switch #2 ON

Switch #3 OFF

Switch #2 OFF

Switch #3 ON

Ring Chimes

and Phones

RING CADENCE

Switch #1 Selects the cadence used for doorphone calls.

ON selects UK ring cadence.

OFF selects long "doorbell ring" cadence.

Intercom calls always ring the telephones using

UK cadence.

RINGING CHIM ES and/or PHONES

Switches # 2 and 3 work together to determine which devices

signal a doorphone call. (Only doorphone calls activate chimes.)

Selects the number of times a doorphone or

intercom call rings before terminating.

RING CYCLES

Switch #4

ON rings phones 5 cycles.

OFF rings phones 3 cycles.

ON

OFF

OPTION SELECTION

DIP SWITCH

1234

Ring Phones Only: Switch #2 OFF

Switch #3 OFF

Ring Chimes Only: Switch #2 ON

Switch #3 OFF

Switch #2 OFF

Switch #3 ON

Ring Chimes

and Phones

RING CADENCE

Switch #1 Selects the cadence used for doorphone calls.

ON selects UK ring cadence.

OFF selects long "doorbell ring" cadence.

Intercom calls always ring the telephones using

UK cadence.

RINGING CHIM ES and/or PHONES

Switches # 2 and 3 work together to determine which devices

signal a doorphone call. (Only doorphone calls activate chimes.)

Selects the number of times a doorphone or

intercom call rings before terminating.

RING CYCLES

Switch #4

ON rings phones 5 cycles.

OFF rings phones 3 cycles.

RINGING OPTIONS FOR DOORPHONES AND INTERCOM STATIONS

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Remember: The 1820A is inserted in the house phone wiring ahead of the point where

extension phones are split off to go to various rooms.

4.3.7 When ringing chimes, the caller only has to push the door station’s call button once. The

1820A sends a chime command every 7 seconds until timeout.

4.3.8 The chime command appears as a dry contact closure on the connection panel of the 1820A.

See Fig.6 on page 8 for wiring.

5. Installation

5.1 Mounting the 1820A.

5.1.1 Mount the 1820A near where the telephone line enters the house. A phone company box

called the Network Interface Device or NID is usually found at the entry point. Sometimes it is

known as the Demarcation or “Demarc”. In many areas, the NID is mounted on the outside wall of

the house. Note: the 1820A must be installed indoors.

5.1.2 The best location for the 1820A unit may be on a utility room wall or on a floor joist in the

basement. In most new homes, the best location is in the CAT5 structured wiring enclosure

5.1.3 The 1820A needs to be close to the NID because the “daisy chain” of house phone wiring

terminates there. To wire the 1820A, the daisy chain is interrupted and rerouted through the 1820A

control unit. See Section 5.3 Wiring below.

5.1.4 Install the 1820A in an area where it will not be exposed to moisture or to

condensation water dripping off pipes, or where the temperature is unusually cold or hot. Avoid

locations where the unit will be subject to vibration, dust or dirt. Do not install it near electric

motors, central air-con or HVAC units.

Fig.5 1820A DIMENSIONS

A. Slot width: 5/32” (4mm) B. Upper hole dia: 5/16” (8mm)

C. Lower hole dia: 15/64 (6mm) D. 1820A depth is 1.85” (47 mm)

E. Dimensions in parentheses are in millimeters.

(230)

(200)

(97)

(48)

(120)

(15)

9.1"

7.9"

4.7"

1.9"

3.8"

0.6"

C

A

1.2"

(30.5)

T

TROPTEL

B

(215)

8.9"

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NOTE: If security dialer alarm jacks (RJ-31X) and/or automation systems like the OnQ HMS are used, they should

be installed “upstream” of the 1820A. If these devices are present, connect units in this order:

NID>RJ-31X>HMS>1820A>Telephone sets.

5.2 Power Input

A 120Vac, 60Hz power outlet should be reasonably near the installation. A power adapter is

provided with the 1820A. All other stations are powered from the 1820A over the CAT-5

connecting cables.

5.3 Wiring: A Simple Approach

5.3.1 Basics

A. Most homes and small offices are wired as shown in Fig.2A. A pair of copper wires extends from

the telephone company demarcation point called the Network Interface Device (NID). This pair is

daisy chained or looped to all of the phones.

B. To install a TropTel Interphone system, the existing phone wire from the NID is cut. Both cut

ends are fitted with modular phone plugs. These connectors plug into the 1820A’s HOUSE

PHONES and TEL LINE jacks. See Fig.2B. Be careful that no phones are installed between the

1820A and the NID.

C. The only new wiring needed is a CAT-5 cable from the 1820A box to each Doorphone or

Intercom station. The 1820A has RJ-45 jacks for the intercom and door stations. They allow

direct plug-in of CAT5 cables.

A Wiring Caveat:

Avoid bell wire and the ancient red/green/yellow/black phone wire. They are neither twisted

paired nor balanced and can be noisy.

EXISTING WIRING

NID

From

Telc o

Fig 2A

EXISTING WI RING

From

Telc o

TropTel

1820A

Fig.2B

NEW WIRING

NID

Do not substitute another make or model power adaptor. The adaptor provided contains certain

components necessary for compliance with Part 15 of the FCC rules and is UL listed.

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About Phone Cable and Wire

A. The 1820A uses twisted pair telephone wire 24AWG (0.5mm) solid copper.

B. Most older homes in the US are wired with four conductor cables,

color coded red, green, yellow, black.

C. Some homes use three pair (6 conductor) cables.

D. Most new homes are wired with four pair, (8 conductor) CAT5e cables.

E. The 1820A may be used with any of these wiring schemes.

F. The FCC requires CAT3 or better cable to be used in all new wiring in the

United States. The old red/green/yellow/black wire no longer complies with

FCC re

g

ulations.

110 BLOCKS

5.3.2 Most new homes use Structured Wiring.

Cables from the phone company’s NID and from each room’s telephone outlet are individually

“home run” wired to a central equipment enclosure. In this case, the 1820A installs in the

structured wiring enclosure. The home-runs are daisy- chained together as shown below.

5.4 Crimping modular RJ-11 or RJ-14 phone plugs for the phone line connections is very

easy using an inexpensive tool and small plastic plug kits available at most hardware stores. The

RJ-45 plugs used with CAT-5 cable require a different and slightly more expensive tool.

5.5 Installation Kit

For installers more comfortable with stripping wires and screwing them down on terminal blocks the

traditional way, Tropical Telecom offers an 1820A installation kit. The kit includes small terminal

blocks with screw terminals and pre-wired modular jacks plus short patch cords to connect to the

jacks on the 1820A. A plastic punch-down tool and instructions for working with the 110 blocks used

in the doorphones are included. The installation kit part number is 5001A.

5.6 Door Chime Wiring

5.6.1 Chime activation

contacts are via screw

terminals on the connection

panel. See the adjacent Fig. 6.

Fig. 6 Door Chime Wiring

F

T

R

FRO NT

DOOR

REA R

DOOR

DOOR CHIME

EXTERNA L

TRAN SFORMER

120Vac

LOW

VOLTAGE

182 0A INTER PHON E

F

T

R

FRO NT

DOOR

REA R

DOOR

DOOR CHIME

EXTERNA L

TRAN SFORMER

120Vac

LOW

VOLTAGE

182 0A INTER PHON E

Tropical Telecom

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T1

R1

LINES 1, 2

LINE

1 2 3 4 5 6

R2

T1

R1

24Vdc NIGHT LIGHT

DOOR AND IC

PHONE JACKS

VOICE

HOUSE

PHONES

IC OR

DOOR

PHONE

TEL

2

T2

1

1 2 3 4 5 6

1 2 3 4 5 6 7 8

24 Vdc

RJ-45

RJ-14

T1

R1

LINE CONT ROL SWIT CH

T1

R1

LINES 1, 2

LINE

1 2 3 4 5 6

R2

T1

R1

24Vdc NIGHT LIGHT

DOOR AND IC

PHONE JACKS

VOICE

HOUSE

PHONES

IC OR

DOOR

PHONE

TEL

2

T2

1

1 2 3 4 5 6

1 2 3 4 5 6 7 8

24 Vdc

RJ-45

RJ-14

T1

R1

LINE CONT ROL SWIT CH

5.7 Installing Stations: Doorphones/Intercom Stations

CAUTION: USE 4012 DOORPHONES WITH THE 1820A

DO NOT USE 4002 DOORPHONES. (THEY ARE FOR THE 1810A)

5.7.1 Use only Tropical Telecom 4012() modules as door stations with the 1820A.

5.7.2 Use only Tropical Telecom 4010D modules as intercom stations with the 1820A.

5.7.3 For station installation details see the module’s User Manual. (Z-4012X-00, Z-4010D-00)

5.7.4 TropTel Interphone Stations (doorphones and intercom stations) are self-contained units pre-

wired at the factory. They use two pairs of wires; one pair for voice and control, the other for DC

power. The 1820A connects the door and intercom stations RJ-45 jacks using the standard T-568-A

wiring convention. That is, voice on the blu/wh pair (pair 1) and power (24Vdc) on the org/wh pair

(pair 2).

5.8 Wiring for Two Phone Lines

To accommodate offices and homes wired for 2 phone lines, pair 2 of the RJ-14 HOUSE PHONES jack

connects internally to pair 2 of the RJ-14 TEL LINE jack. This second pair bypasses around the

1820A without requiring any other wiring.

Fig 7. 1820A

Jack Wiring

6. Warranty

6.1 If trouble is experienced with this equipment, please contact Tropical Telecom’s Service Center

at 808-263-1222 for repair and warranty information.

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7. General Specifications

8. FCC Requirements: Parts 15 and 68

FCC Part 68 Registration # US: CSU OT04B1820A. Connectors RJ-14 (6P6C)

FCC Part 15(b) Tested and verified to comply with Part 15, Class B of the FCC Rules.

Your 1820A is registered under Part 68 of the

FCC rules. It has been tested to ensure

compliance with FCC rules Part 15b. On the top

of the unit is a label that contains the FCC

registration number and ringer equivalence number (REN) for this

equipment. If requested, this information must be provided to the

telephone company.

The REN is used to determine the quantity of devices which may be

connected to the telephone line. Excessive RENs on the telephone line

may result in the devices not ringing in response to an incoming call. In

most, but not all areas, the sum of the RENs should not exceed five (5.0).

You can contact your local telephone company to determine the

maximum REN in your calling area if such esoterica is of interest to you.

This equipment connects to the telephone network via the following

standard network interface jack: USOC RJ-14. This equipment is

designed to be connected to the telephone network or premises wiring

using a compatible modular jack that is Part 68 compliant. This equipment

cannot be used on telephone company provided Coin Telephone

Service. The 1820A is not designed to operate on Party Line Service.

If this equipment causes harm to the telephone network, the telephone

company will notify you in advance that temporary discontinuance of

service may be required. If advance notice is not practical, the telephone

company will notify you as soon as possible. Also, you will be advised of

your right to file a complaint with the FCC if you believe it is necessary.

The telephone company may make changes in its facilities, equipment,

operations, or procedures that could affect the operation of the equipment.

If they do, you will be given advance notice so that you can make any

modifications necessary to maintain uninterrupted service.

9. For a larger phone system…

Take a look at the Tropical Telecom 2810C. It has multi-line switching, a true PBX architecture,

“in-skin” voicemail, fax routing, call forwarding, and auto attendant.

Tropical Telecom Corp.

Kailua, Hawaii, USA 96734

www.troptel.com

Dimensions:

9.1” x 4.7" x 1.85 "

(230 x 120 x 47 mm)

Weight:

2.5.lb (1.1kg)

Including power adaptor

Phone Lines

First line handles interphone service.

(loop start, 2 wire tip, ring, 600 ohm)

Second line routed through TEL LINE

and HOUSE PHONES jacks.

Doorphone/ Intercom Ports

Six (6) Each

Ringing: 5 REN max.

Other Ports

Power Input, Paging jack

House Phones jack,

Tel Line jack.

Power Adaptor

Power Input: 120 Vac, 60Hz

Power Output: 24 Vac

Power Consumption: 16 W max.

CALLER ID: Passed to phones

from the telephone company

(Requires service

f

rom the Telco.)

Intercom:

All-Call from Door phone station to all phones.

All-Call from each intercom station to all phones.

All-Call among all the phones.

Selective from any phone to each intercom station.

T

TROPTEL

Tropical Telecom 1820A Installer/User Manual

Tropical Telecom 1820A Installer/User Manual

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