Telecell-H - Telelink Installation

Contents

KRONE AG, Document number 400 062.00, Issue October 1999

Telelink-H 3Installation

i

List of Contents

1 Version Control Information 1-1

2 Safety Instructions 2-2

3 Introduction 3-13.1 Acknowledged Use of the Telelink-H 3-13.2 Use and Structure of the Manual 3-23.3 Naming Conventions 3-23.4 Standards 3-43.5 Ongoing Development and Disclaimer 3-4

4 Sockets, Indicators and Tones of the Telelink-H 4-1

5 Information about Telelink-H Location 5-15.1 Antenna Location 5-15.2 Location of Telelink-H 5-3

6 Installation of the Telelink-H 6-16.1 Checking the Installation Location 6-16.2 Installing the Antenna 6-36.3 Installing the Telelink-H 6-36.4 Connecting the Antenna 6-66.5 Installing the Customer’s Telephone Equipment 6-66.6 Connecting the Power 6-7

7 Commissioning and Operation of the Telelink-H 7-17.1 Opening the Telelink-H Account 7-17.2 Registering the Telelink-H 7-17.3 Registering to Test Number 7-77.4 Registering, Memory Aid 7-8

8 Maintenance and Service, Cleaning 8-18.1 Failures 8-18.2 Cleaning 8-2

Contents



ii

8.3 Service Mode Functions 8-28.4 Receipt Signal Level Test 8-5

9 Disposal 9-1

10 Technical Data Telelink-H 10-1

11 Index 11-1Telelink-H Checklist: Site Survey / Installation

Contents



iii

List of Figures

Figure 4-1 Sockets and indicators of Telelink-H 4-4Figure 4-2 Sockets and pin assignment of Telelink-H 4-5Figure 5-1 Location of indoor antenna 5-4Figure 5-2 Location of wall antenna 5-5Figure 5-3 Antenna lightning protection, example 5-6Figure 6-1 Telelink-H installation, mounting space requirements 6-5Figure 6-2 RJ-11 telephone socket, pin assignment 6-6Figure 6-3 Telelink-H grounding screw 6-8Figure 10-1 Telelink-H, dimensions 10-2

Contents



iv

List of Tables

Table 1-1 List of valid pages 1-1Table 4-1 Combinations of lower 3 LEDs and their meaning 4-2Table 4-2 Combinations of upper five green and one yellow LED

and their meaning 4-3Table 5-1 Antenna distance and mounting 5-2Table 7-1 Keys and pulse numbers 7-4Table 7-2 Registering procedure, summary 7-8Table 8-1 Service tests and functions 8-5

Contents



v

KRONE Publications Regarding Telecell-H

Title Order No. (Docu-ment)

Description

Telelink-H Installation 400 003 Installation, commissioning and service ofthe Telelink-H

Includes “Telelink-H 2 Drilling Schematics”(400 040) and “Telelink-H Check-list/Questionnaire for Site Survey and/orInstallation” (400 039; in printed versiononly)

Telecell-H Technical Description 400 013 Technical description of the Telecell-H sys-tem

Telecenter-H Installation 400 015 Hardware installation and commissioningof the Telecenter-H

Telecenter-H Operation and Main-tenance System (OMS)

400 021 Operation, maintenance and service of theTelecenter-H using the DOS software(software manual)

Telecenter-H OMS for Windows 400 077 Operation, maintenance and service of theTelecenter-H using the Windows software(software manual)

Telecenter-H SAC Module 400 038 Service, troubleshooting and alertingsetup using the module SAC (boards SCDand SCDA)

Telelink-H 2 User Information 400 039 End user (telephone customer) informa-tion about the Telelink-H

Telecenter-H Service Reference 400 044 Reference manual for Telecenter-H, in-cluding LEDs, Connectors, Frequencies,Jumpers etc.

Johannes Graubner

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Johannes Graubner

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Johannes Graubner

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Johannes Graubner

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Johannes Graubner

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Johannes Graubner

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Contents



vi

Title Order No. (Docu-ment)

Description

Testlink TL2-M (360 ... 490, 800 ...1000 MHz)

400 055 Operating instructions for field strengthTestlink TL2-M (sub-range of frequencyrange 360 ... 490 and 800 ... 1000 MHz)

The table above may list manuals that are not yet available. KRONE AGpreserve the right to issue any manual on its own discretion.

Johannes Graubner

mák

Version Control Information

Chapter 1



1-1

1 Version Control Information

Page Current Edition Note

i – vi October 1999 First issue

1-1 – 1-1 October 1999 First issue











Table 1-1List of valid pages

First edition of manual: October 1999

Safety Instructions

Chapter 2



2-2

2 Safety Instructions

The Telelink-H is a highly sophisticated telecommunication device. Al-though all reasonable measures have been taken by KRONE to build asave device, certain precautions have to be observed to avoid damageand/or personnel injury. Important safety information is highlighted asWarning and Caution instructions. You must obey these instructions.The use of Warnings and Cautions is defined below:

Instructions are marked with “Warning” when it is essential that theyare followed in order to avoid personal injury or death.

Instructions are marked with “Caution” when they must be followedin order to avoid damage to the product itself, to any connectedequipment as well as errors in the overall process.

Following, general Warning and Caution instructions are given. Addi-tionally, Warning and/or Caution instructions are given during the pro-cedures as appropriate, before the instruction they apply to.Always adhere strictly to the procedures given herein; nouse/procedures other than specified herein and in relatedKRONE manuals is allowed.

The system is powered by voltages that are lethal (mains voltages).During normal installation there is no need to open the casing, so nolive wires are exposed and no danger exists. Remove the mains cablebefore opening the casing.

The Telelink-H external power supply unit may contain rechargeablebatteries of the NiMH (Nickel Metal Hydride) type (check the productlabel on the power supply). Do not charge them at ambient tem-peratures below 0 or above 40°C, otherwise the gas pressure inside

Warning

!

Caution

Warning

!

Warning

!

Safety Instructions

Chapter 2



2-3

the batteries could rise and alkaline gas or oxygen and hydrogen could leak from the battery.

Never disassemble the Telelink-H or its power supply and in par-ticular not the battery. Never throw the Telelink-H or the power sup-ply or parts of these into fire. The electrolyte inside the battery ishighly alkaline and can damage skin and clothes.

Provide proper overvoltage protection for the mains, for the an-tenna and/or telephone wire if it is exposed to lightning, e.g. if it is in-stalled open air or underneath the roof of the building or if the cableruns under such conditions, or in the ground.

The Telelink-H generates, uses and radiates radio energy. If it is notinstalled in strict accordance with this installation manual, it may causeharmful interference to other radio communications.

Any warranty claims can only be acknowledged by KRONE, if theTelelink-H and any parts thereof have been handled, installed, oper-ated and used according to the instructions given herein and in re-lated KRONE publications.

Electrostatic discharges may damage electronic components. Makesure you and the Telelink-H are discharged when opening the casingand/or working at any parts therein. The use of an antistatic wriststrap and electrically isolated tools is generally recommended.

Ensure an effective natural convection, i.e. do not obstruct the de-vices and provide the free space around as stated.

Warning

!

Warning

!

Caution

Caution

Caution

Caution

Introduction

Chapter 3



3-1

3 Introduction

3.1 Acknowledged Use of the Telelink-H

The Telelink-H is designed as a highly automated device. It is the cus-tomer terminal unit CTU of the Telecell-H system, which can handle upto 4000 such customer terminal units. The Telecell-H system provides thetelephone customers via radio links with access to the public telephonenetwork. The Telelink-H itself is operated by a secure low voltage buthas an power supply unit converting mains power to the input voltagelevel required by the Telelink-H. This external power supply may haveoptional rechargeable batteries for uninterrupted operation. Thepower supply via a solar generator is also possible.

The Telelink-H provides the telephone customer with a standard inter-face (usually Tip/Ring interface, others as selected with the order) towhich customer station devices designed accordingly can be connected.The customer interface operates like any standard phone line interface.

The Telelink-H sets up a radio link within the RF band for incoming andoutgoing calls. At idle times the customer terminal unit is in stand-bywith no active radio link.

The Telelink-H 3 consists of the subsystems: The electronics contained in the Telelink-H casing. The antenna connected directly or via cable to the Telelink-H elec-

tronics. The telephone standard interface provided at a socket at the Tele-

link-H casing. The in-line power supply unit being fed by the mains at the input

and providing 12 V DC to the Telelink-H at the output. Dependingon the type this may include a backup battery for uninterruptedpower supply even during a mains cut.

Introduction

Chapter 3



3-2

3.2 Use and Structure of the Manual

The Telelink-H may be installed, operated and serviced according to theinstructions given herein and in the KRONE publications appropriate.No use other than specified in these publications is allowed because itmay result in a hazardous condition.Installation of the Telelink-H must be performed by suitably trainedand supervised staff.Equipment connected to the telephone interface must meet the stan-dards specified for the interface supplied.

This manual gives the information necessary for the installation andcommissioning of the Telelink-H 3. This manual is structured as follows: Chapter 2 contains safety instructions. Chapter 3 gives an introduction to the Telelink-H and shows how to

use this manual. Naming conventions and standards are listed. Chapter 4 gives an overview of the Telelink-H sockets and indicators. Chapter 5 gives hints to the Telelink-H location. Chapter 6 explains the Telelink-H installation procedure. Chapter 7 describes the Telelink-H commissioning. Chapter 8 describes the necessary maintenance work. In Chapter 9 some hints to the Telelink-H disposal are given. Chapter 10 contains the technical data.

An in-depth description of the Telecell-H system can be found in themanual “Telecell-H Technical Description”.

3.3 Naming Conventions

Telelink-H and Telelink-H 3

There are three types of Telelink-H in the field, the older Telelink-H 1(marked “Telelink” on the manufacturer label) and Telelink-H 2(marked “Telelink 2”) as well as the latest Telelink-H 3, marked “Tele-link 3” on the manufacturer label. Except where explicitly stated, thismanual refers to the Telelink-H 3 only, despite the “3” being usuallydropped for legibility.

The term Telelink-H refers to the whole radio system at the telephonecustomer side, including antenna and electronics but not to the powersupply unit.

Warning

!

Introduction

Chapter 3



3-3

Telelink-H functional unit

“Telelink-H functional unit” refers to the device labelled „Telelink 3“ onthe manufacturer label and containing the radio part and telephone in-terface of the Telelink-H 3.

Telelink-H cover

“Telelink-H cover” refers to the plastic cover of the Telelink-H functionalunit.

Light pipes

“Light pipes” refers to the small transparent piece of plastic transferringthe light from the LEDs in the functional unit to the front of the Tele-link-H cover.

Cover

Telelink-H

Light pipes

Functionalunit

Power supply unit

Introduction

Chapter 3



3-4

“Power supply unit” refers to the unit powering the Telelink-H func-tional unit. Usually this will be a mains dependent in-line power supply,optional with internal backup battery.

3.4 Standards

Installation and operation of the Telelink-H must be according to thefollowing standards. DIN VDE 0800 Part 1

Telecommunications: General concepts, requirements and tests forthe safety of facilities and apparatusEquivalent to: IEC 364-4-41-1982

DIN VDE 0800 Part 2Telecommunications: Earthing and equipotential bondingEquivalent to: IEC-364-4-41-1982

DIN VDE 0100Erection of power installations with rated voltages up to 1000 VEquivalent to: IEC 64-633-1992

VDE 0100 Part 540Erection of power installations with nominal voltages up to 1000 V;selection and erection of equipment; earthing arrangements, protec-tive conductors, equipotential bonding conductorsEquivalent to: IEC 364-5-54-1980

DIN VDE 0185 Part 1Lightning protection system: General with regard to installationEquivalent to: IEC 1024-1

DIN VDE 0855 Part 1 Revisional DraftCabled distribution systems for television and sound signals; Part 1:Safety requirementsEnglish version: prEN 50083-1-1991 (European draft standard)

Additionally, your installation should conform to all local and nationalstandards as applicable.

3.5 Ongoing Development and Disclaimer

Ongoing development

Due to ongoing development, KRONE reserves the right to change ormodify specifications without notice.

Disclaimer

The information given herein is compiled as carefully as possible, none-theless errors and omissions may occur in this manual.

Introduction

Chapter 3



3-5

Trade names

All trade names are acknowledged and the property of their respectiveowners.

Sockets, Indicators and Tones of the Telelink-H

Chapter 4



4-1

4 Sockets, Indicators and Tones of the Telelink-H

The Telelink-H provides the following sockets and indicators (Figure4-1): power supply socket customer station socket antenna socket Red, green, yellow LEDs

Tones are output via the telephone equipment connected.

Sockets

The power supply socket is a 6.3 mm jack type socket. For pin as-signment refer to Figure 4-2.

The Tip/Ring customer station socket is of RJ-11 type (6 pin positions,4 pins available, 2 pins connected; refer to Figure 4-2). While the Tele-link-H has two connector positions, only one may be equipped with aconnector and the other one covered.

The antenna socket is of the TNC type (screwed connector).

Indicators (LEDs)

The Telelink-H 3 has a total of 8 LEDs. They indicate (from top to bot-tom) the following system states (refer to Table 4-1 and Table 4-2 for adetailed explanation). Red LED: Initialising (directly after power-on), system failure or

power supply overvoltage Green LED: Power supply voltage state Yellow LED: Reception of organisation channel signal.


Chapter 4



4-2

5 green LEDs: Reception level of radio signalThe meaning of these LEDs depends on the current Telelink-H op-eration mode: Standard mode and service mode.– In standard mode the LEDs operate like a bar indicator, the more

LEDs lit the better the reception.– In service mode they show a binary value with the most upper

LED showing the most significant bit, the lowest LED showing theleast significant bit. (Please note that in service mode the yellowLED does not show the reception of the organisation channel sig-nal.)

Red Green Yellow Description

1 – – – Telelink-H off

2 • – Telelink-H on. Either• System in idle state and no organisation channel available (no

radio communication possible)or• Call ongoing (the organisation channel is not monitored during

ongoing calls)

3 • • Telelink-H on, organisation channel available (> 50% of organisa-tion channel frames decoded)

4 • • – • – Telelink-H on, organisation channel available (> 50% of organisa-tion channel frames decoded), Telelink-H not yet registered withTelecenter-H (no call setup possible)

5 – • – • – Power supply undervoltage (UInput < 12 V). Flashing frequency

increases with decreasing voltage. Telelink-H still operable de-pending on state of yellow LED (refer to row 2, 3 or 4)

6 • • Power supply overvoltage (UInput < 12 V ???)

7 • – – Power available. Either• Processor on hold (system failure)or• Directly after power on: System initialisation

8 • • • No valid firmware found in flash memory

Legend:– LED off

• LED on

• – • – LED flashing

(empty) LED may be on or off

Table 4-1Combinations of lower 3 LEDs and their meaning


Chapter 4



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Green 1 Green 2 Green 3 Green 4 Green 5 Yellow Receptionlevel

Description

Telelink-H in standard mode (operational and registered)– – – – – • or – < –92 dBm Radio reception level too low. Call

setup may be possible but voice qualityis below specifications

– – – – • • > – 92 dBm Radio reception level low . Call setuppossible but voice quality is belowspecification

– – – • • • > –87 dBm Radio reception level near lower limit.Call setup possible, voice quality maydegrade over call duration belowspecification (depending on receptionlevel stability)

– – • • • • > –77 dBm Radio reception level acceptable.– • • • • • > –67 dBm Radio reception level acceptable.

• • • • • • > –57 dBm Radio reception level good. Minimumlevel for Telelink-H installation undernormal conditions.

Telelink-H in service mode (refer to Section 8.3 “Service Mode Functions”)– – < –77 dBm Reception level below installation limit

• – – – – • > –77 dBm Reception level at absolute lowerinstallation limit

• – – • – • > –73 dBm Reception level almost acceptable forinstallation (9 dB fading margin)

• – – • • • > –71 dBm Reception level acceptable for installa-tion (> 11 dB fading margin)

• • • > –69 dBm Reception level ok for installation

• • • > –61 dBm Reception level very good

• • • • > –57 dBm Upper limit of scale, higher valuescannot be displayed

Legend:– LED off

• LED on

• – • – LED flashing

(empty) LED may be on or off

Green 1 Most upper LED

Green 5 Lowest LED of the set of the five green LEDs

Table 4-2Combinations of upper five green and one yellow LED and their meaning


Chapter 4



4-4

Tip/Ring Power(hidden)

Antenna

LEDs

LEDs5 x green1 x yellow1 x green1 x red

Figure 4-1Sockets and indicators of Telelink-H


Chapter 4



4-5

+–

3 Tip4 Ring1 2 3 4 5 6

Figure 4-2Sockets and pin assignment of Telelink-H

Tones

The Telelink-H outputs the following, self generated tones via the tele-phone equipment connected: Dial tone as programmed at the OMS Busy tone as programmed at the OMS Low battery warning tone. The Telelink-H assumes that the external

power supply is supported by a backup battery. During a mainspower failure this backup battery voltage may fall below a certainlimit at which the Telelink-H outputs the “low battery warningtone” towards the telephone every 10 s until either the input volt-age falls below the switch-off voltage (at which the Telelink-Hswitches off itself to avoid deep discharging of the battery) or thevoltage has risen above “low battery” limit (e.g. due to a return ofthe mains power).

Service tones (in service mode, refer to Section 8.3 “Service ModeFunctions”)

All other tones are generated elsewhere but not in the Telelink-H.

Information about Telelink-H Location

Chapter 5



5-1

5 Information about Telelink-H Location

The antenna location determines the location of the Telelink-H casingand not vice versa.

The antenna may be set on the antenna socket of the Telelink-H orconnected via a cable of preferably no more than 3 m length (theshorter the better). A short antenna cable is more important than thelength of the telephone line. If however a high antenna mast can pro-vide a higher signal gain than the loss occurring on the correspondinglylonger antenna cable, it may be sensible to install an antenna cable ofmore than 3 m length in order to ensure a sufficient signal receptionlevel.

The Telelink-H casing should be installed hanging at a wall.

Please note that there is a checklist available (KRONE Document no. 400041, a copy of it is enclosed with this manual) which should be filled foreach Telelink-H during site surveys and/or installation and filed in a waythat it can be retrieved easily. It provides for both, as quality ensuranceform and as first basic information source during remote troubleshoot-ing.

5.1 Antenna Location

The location of the antenna depends on the actual conditions with re-gard to the radio signal propagation. The further the site is away fromthe Telecenter-H, the higher are the requirements for the Telelink-H an-tenna. Before installing the Telelink-H and its antenna, test the actualtransmission conditions using a Telelink-H and the antenna intended forinstallation (see Section 6.1 “Checking the Installation Location”).


Chapter 5



5-2

The following table states some general conditions and the antenna lo-cation that is likely to provide an adequate RF signal (antenna length ofrod antennas λ/2 at least).

Distance Telecenter-H /Telelink-H antennas

Antenna type Location of Telelink-H antenna Notes

< 2 km(< 1.25 miles)

Dielectric rod In a room facing the Telecenter-H Antenna mounted directly on theantenna socket or connected via acable

< 5 km(< 3 miles)

Dielectric rod At the outer side of a wall facingthe Telecenter-H

Windows antenna or antennamounted at outside wall

< 10 km(< 6 miles)

Directional antenna At the outer side or a wall facingthe Telecenter-H

The Telecenter-H antenna shouldbe visible from the antenna loca-tion

> 10 km(> 6 miles)

Directional antenna Under the roof or on top of thebuilding, an antenna mast, tower,higher building in the vicinity oron a hill

As high as possible with ideally noobstruction in the line of sight tothe Telecenter-H

Table 5-1Antenna distance and mounting

While installing the antenna keep in mind: The Telecenter-H antenna should be virtually visible from the an-

tenna location (virtually: at the end of an imagined line free of anyobstructions).

The general rule is: The higher the antenna is mounted, the better isthe transmission quality. The longer the distance between transmit-ter and receiver, the higher the antennas should be located.

Thick walls, particularly if made of reinforced concrete, may consid-erably affect the transmission quality in a negative way.

Metal surfaces or metal objects in the radio signal propagation line,particularly if located in short distance in front of the antenna, mayconsiderably affect transmission quality in a negative way.

If using directional antennas, there should not be any obstructionwithin the opening angle of the antenna (about 90°) and up to 10 mdistance.

If obstructions exist in the line of sight between a directional an-tenna and the Telecenter-H try to direct the antenna toward re-flecting surfaces (building walls, hill slopes etc.) that are located tothe side of the theoretical line of sight.

Metal surfaces or metal objects behind the antenna may positively ornegatively affect the transmission quality. Experiment at the in-tended location to optimise the position.

A free space of 50 cm or more behind and to the side of the antennausually improves the transmission quality. Non-metallic obstructionsare less important.


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5-3

5.2 Location of Telelink-H

When choosing the location for the Telelink-H consider: The Telelink-H should be installed hanging at a wall. The Telelink-H usually is mains dependent, you will need a suitable

mains outlet according to the local standards (exception: provision ofan alternative power supply like solar power). This outlet should beavailable for the Telelink-H all time, not be time-shared with otherdevices.

Telelink-H and the power supply unit generate heat that is removedby natural convection. Therefore take notice of:– The free space between the Telelink-H and the wall, as given by

the feet, should remain free of any obstructions to allow the freeflow of air.

– Provide around the Telelink-H at least the free space according toFigure 6-1, Section 6.3 “Installing the Telelink-H”.

– Do not encapsulate the Telelink-H in any way.– Do not encapsulate the power supply unit in any way.

Lay cables (antenna, power supply) in a safe way, that they cannotbecome a danger to persons (danger of tumbling). If necessary, pro-tect the cables by using special cable conduits as appropriate.

Make sure, Telelink-H and power supply unit are not exposed to di-rect sunshine and are not located in the direct vicinity of heatsources.

Telephone customer cable lightning protection

Lightning protection should be installed at both ends of the telephonecable, if the cable is exposed to direct or indirect lightning strikes, e.g.the cable runs open air.

Protection devices should be installed at the point, the cable exits/en-ters the building.

The earth terminal of the overvoltage protector should be connectedto the building electrical ground.

Provide lightning protection according to the standard DIN VDE 0855 /prEN 50083-1-1991 and according to the local and national standards.

Antenna lightning protection

Lightning protection should be installed at the antenna and the an-tenna cable screen, if the antenna is installed on a tower or on top of abuilding or otherwise exposed to lightning. Connect the lightning pro-tection to the lightning protection system of the tower/building.

No lightning protection is required for: Indoor antennas if installed according to Figure 4-1 with


Chapter 5



5-4

– Distance between antenna and roof inner surface > 50 cm– Distance between any part of the telephone system (e.g. antenna,

Telelink-H, antenna cable, telephone cable, mains cable, tele-phone equipment) and any part of the lightning protection sys-tem (e.g. lightning rod) > 50 cm

Wall antennas if installed according to Figure 4-2.Please note the vertical alignment of the antenna in both configu-rations!

>50cm

> 50 cm

Tele-link-H

Figure 5-1Location of indoor antenna


Chapter 5



5-5

2 m min.

1.5 m max.

Figure 5-2Location of wall antenna

Minimum requirements for indoor antenna (no lightning protectionneeded): Do not interfere with the minimum distance requirement of50 cm between lightning protection equipment and radio equipment,i.e. make sure, lightning rods etc. at top of the roof do not interferewith Telelink-H devices/cables below the roof.

In all other cases provide proper lightning protection according to thestandard DIN VDE 0855 / prEN 50083-1-1991. The Figure 5-3 below givesa general idea about the design of lightning protection for the an-tenna.


Chapter 5



5-6

2

Telelink

min. 1/6th oftotal mast length(max. 1 m)

Earthconductor(10/16 mm²Cu)

Antennamounting

Antennacable

Potentialequalisat-ion bar

Tofoundationearthelectrode

AntennaAntennamast

Figure 5-3Antenna lightning protection, example

Grounding of Telelink-H

The Telelink-H optionally contains a grounding screw that may be usedto ground the Telelink-H properly. In this case you require a groundingconnection near the Telelink-H.

Installation of the Telelink-H

Chapter 6



6-1

6 Installation of the Telelink-H

The installation can be structured in Checking the Installation Location, Section 6.1 Installing the Antenna, Section 6.2 Installing the Telelink-H, Section 6.3 Connecting the Antenna, Section 6.4 Installing the Customer’s Telephone Equipment, Section 6.5 Connecting the Power, Section 6.6

Please note that there is a questionnaire form available (KRONE Docu-ment no. 400 041, a copy of it is enclosed with this manual) whichshould be filled for each Telelink-H during site surveys and/or installa-tion and filed in a way that it can be retrieved easily. It provides forboth, as quality ensurance form and as first basic information sourceduring remote troubleshooting.

Any alterations at the customer site should be discussed with andagreed by the telephone customer.

6.1 Checking the Installation Location

For general information regarding the installation location refer toChapter 5 “Information about Telelink-H Location”.

Because all other installation work depends on the antenna site, firstly itneeds to be checked whether the proposed location provides a suffi-cient radio transmission quality. Particularly in urban areas, the use of atest receiver is highly recommended. Only as a substitute may be usedthe receipt signal level indication mode of a Telelink-H as indicator foracceptable signal reception conditions (the Telelink-H to be installedmay be used, if the frequency code has been set already – refer to Sec-tion 7.2 “Registering the Telelink-H”, Step “Service mode, data input


Chapter 6



6-2

for registering”). In order to counter the higher sensitivity of the organi-sation channel used in the latter case (compared to the communicationchannels), a 10 dB RF attenuator should be inserted into the antennaline at sites with high fading, e.g. due to multi-path propagation, vege-tation etc.

For detailed information about antennas refer to Table 5-1.

For additional information regarding operation of the Telelink-H sys-tem and registering of a Telelink-H with the Telecenter-H refer to Chap-ter 7 “Commissioning and Operation of the Telelink-H”.

Follow the procedure below until a sufficient transmission quality isachieved.

1. Determine the direction to the Telecenter-H. Use maps, compassor GPS (Global Positioning System) receiver as necessary.

2. Based on the distance to the Telecenter-H (accuracy in kilometres)determine the antenna and antenna position that probably willbe suitable for the location (refer to Table 5-1).

Consider:

– The Telelink-H including rod antenna may be installed in thehouse/flat of the customer in a room facing toward the Tele-center-H.

– The Telecenter-H should be actually or virtually (no real ob-structions) visible.

NoteIf it is intended to connect a fax or modem to the Telelink-H, al-ways select a directional antenna to avoid interference by echoedsignals.

3. Check that the antenna position gives a sufficient signal receptionquality. For this test you require a Telelink-H that has been set tothe correct frequency already (according to the transmission fre-quency used by the Telecenter-H). Refer to Section 7.2“Registering the Telelink-H”, Steps 1 – 3 and 6 (up to keying inthe frequency code) in particular.

NoteThe system operates with vertical polarisation, hence the antennashould always be positioned upright.

– Connect Telelink-H, antenna, telephone set and power supplyunit.


Chapter 6



6-3

– Set the Telelink-H to service mode (refer to Section 7.2“Registering the Telelink-H”, Steps 1 – 3). Do not return thehandset onto the telephone.

– Using the intended antenna position, adjust the antenna forthe best signal reception level. Refer to Table 4-2 for the LEDreading and acceptable reception levels.

4. If the above did not provide sufficient transmission quality, check:– Other positions like in the attic under the roof, on top of the

roof, a mast, tower, building in the vicinity, hill or similar.– The use of a reflected signal (reflected by a known immobile

surface).

6.2 Installing the Antenna

If the procedure above resulted in a separate installation of the Tele-link-H casing and the antenna, mount the correct antenna according tothe installation instructions provided with the antenna at the place de-termined in Section 6.1 “Checking the Installation Location”. Alwaysmake sure, the antenna is located upright with the "TOP" mark orsimilar at the top.

Install proper lightning protection equipment when installing theantenna open air or directly under the roof or when running the an-tenna cable partly at places exposed to direct or indirect lightningstrikes. Refer to Chapter 5 “Information about Telelink-H Location”.

6.3 Installing the Telelink-H

The Telelink-H is installed hanging at a wall with the antenna socket tothe right hand side. It is fixed to the wall by three screws.

Make sure, the Telelink-H is not exposed to direct solar radiation.Otherwise it may overheat.Make sure, the natural convection is not obstructed.

Provide for vertical air circulation all around the device. Do not allowany object including stores to touch the casing. Additionally, storesshould not be allowed to obstruct the space between the rear side ofthe casing and the wall.

1. Choose the mounting location. Make sure that there is sufficientfree space around the Telelink-H for natural convection (200 mmat the top, 50 mm at the sides and bottom, refer to Figure 6-1).

2. Select the appropriate fixing method according to the wall mate-rial, e.g. use of dowels, direct placement of wood screws etc. andscrew in the fixing screws (usually steel screws of 4 x 30 mm [simi-

Warning

!

Caution


Chapter 6



6-4

lar to the standard DIN 7996] will be appropriate). Use the Tele-link-H housing as drilling schematics.

3. Fix the Telelink-H onto the wall.

4. Insert the LED light pipes into the eight holes at the front of theTelelink-H housing. Please note that this piece of plastic is coded(the most upper pin is flat not round): Do not misplace it!

The Telelink-H is installed mechanically, continue with connecting theantenna.


Chapter 6



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50 mm50 mm

200 mm

50 mm

Free mounting space

Figure 6-1Telelink-H installation, mounting space requirements


Chapter 6



6-6

6.4 Connecting the Antenna

Connect the antenna (cable) to the antenna socket located at the righthand side of the Telelink-H and to the antenna. Keep the antenna cableas short as possible.

The antenna socket is of the TNC type, use an adapter if necessary.

Fasten the antenna connector using your fingers only.Do not use any tools.

Do not bend the antenna cable more than the minimal bending ra-dius allowed.

6.5 Installing the Customer’s Telephone Equipment

The Telelink-H may provide two telephone customer interfaces, usuallyof the Tip/Ring (a/b) type. If there are two connectors, they are con-nected in parallel (one phone number).

3 Tip4 Ring

1 2 3 4 5 6

Figure 6-2RJ-11 telephone socket, pin assignment

Direct connection

The customer’s telephone equipment may be connected to the Telelink-H casing directly. This is suitable if the Telelink-H is located in the sameroom as is the customer’s telephone equipment and the customerwants to connect a single device only.

Caution

Caution


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Separate telephone socket

If the customer’s telephone equipment and the Telelink-H are locatedin different rooms and/or multiple devices are to be connected, a sepa-rate telephone socket with multiple outlets should be installed. (TheTelelink-H 2 optionally provides 2 RJ-11 telephone sockets in parallelwhich may be sufficient for the particular telephone customer.) The 2-wire cable between Telelink-H and the customer's equipment may beseveral 100 m long, with the loop limit (including customer’s equip-ment) not exceeding 900 Ω. The customer may connect as many devicesto the Tip/Ring interface(s) as long as a ringer unit value of 3 is not ex-ceeded (usually one telephone station is equivalent to 1 ringer unit, re-fer to the station manual).

Install proper lightning protection equipment when install-ing/running the telephone cable partly at places exposed to direct orindirect lightning strikes.

Lightning protection should be installed at both cable ends, the cus-tomer's telephone equipment and the Telelink-H electronics side. Referto Chapter 5 “Information about Telelink-H Location”.

Seal any cable glands where the telephone cable leaves the building ormay otherwise be a cause for possible water ingress.

6.6 Connecting the Power

The Telelink-H is powered by the mains via an in-line power supply unit.The in-line power supply is intended for a plug and socket installationonly (no stationary mains connection). However, the mains socketshould be available for the Telelink-H only and not be time shared withany other device.

Make sure, the cables are not damaged in any way.

1. Optionally: Ground the Telelink-H. Depending on the type ofTelelink-H it contains a grounding screw (Figure 6-3). If necessary,connect a grounding cable to the screw. Connect the other side ofthe cable to a good grounding (not the neutral line of themains!).

Grounding is necessary for example if the telephone line runs out-side the house or if local standards and regulations requiregrounding. This screw at best can only be a supplement butnether a substitute for proper lightning protection of the antennacable and for a good grounding of the mains supply voltage.

Warning

!

Warning

!


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6-8

2. Make sure, the power cable supplied is fitted with a mains plugaccording to the local sockets. Fit a correct plug if necessary.

3. Make sure, a mains socket is in the vicinity of the Telelink-H cas-ing. If not, install a mains socket there and connect it accordingly.Obey local and national standards and requirements.

4. Make sure that your mains voltage meets the conditionsstated on the in-line power supply label. Do not use the in-linepower supply otherwise.

Connect the in-line power supply with the Telelink-H (6.3 mm jacktype connector, for poling refer to Figure 4-2) and the mains.

5. Clip the plastic cover onto the Telelink-H.

Make sure, all cables are laid in a safe way and cannot become adanger to persons (tumbling).

The Telelink-H with all external components is now installed, continuewith commissioning.

Groundingscrew

Figure 6-3Telelink-H grounding screw

Warning

!

Warning

!

Commissioning and Operation of the Telelink-H

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7 Commissioning and Operation of the Telelink-H

The commissioning of the Telelink-H includes Opening the Telelink-H Account at the Telecenter-H, realised at the

Operation and Maintenance System Registering the Telelink-H with the Telecenter-H, realised at the

Telelink-H using any telephone device with key pad (MFC dialling,the function keys asterisk, “*”, and hash, “#”, must be availableand operational).

7.1 Opening the Telelink-H Account

With the opening of a Telelink-H account, the Telecenter-H is preparedto accept the registering of a Telelink-H with the Telelink-H numberdedicated to that customer. Certain parameters regarding the call proc-essing have to be set, too. The Telecenter-H will accept registering ofany Telelink-H sending the designated Telelink-H number at the correctfrequency, i.e. the field personnel has to know the Telelink-H numberassigned in order to be able to register the Telelink-H.

The Telelink-H account should be opened by the operator familiar withthe Telecenter-H Operation and Maintenance System. For details referto the Manual “Telecenter-H Operation and Maintenance System(OMS)” or “Telecenter-H OMS for Windows”.

7.2 Registering the Telelink-H

The following procedure assumes, that the Telelink-H has been installedproperly already (see Chapter 6 “Installation of the Telelink-H”). How-ever the procedure may be completed before full installation, if neces-sary. In any case, the Telelink-H must be operational, i.e. connected tothe mains, an antenna installed and located in a way that the radio sig-


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nal reception quality is sufficient. A Telelink-H account must have beenopened at the Telecenter-H (see Section 7.1 “Opening the Telelink-HAccount”, for the exception see Section 7.3 “Registering to Test Num-ber”).

For the following procedure you will need the Password (4 digits) Frequency code number (3 digits) that represents the frequency

range of the Telecell-H system (the number is shown by the Opera-tion and Maintenance System, refer to the Manual “Telecenter-HOperation and Maintenance System (OMS)” or “Telecenter-H OMSfor Windows”)

Telelink-H number of the account opened for that customer (last 4digits)

All these numbers may be obtained from the local project manager.

Before starting to register, check whether the Telelink-H is installed properly at the designated location. In par-

ticular check the safety features of the installation, e.g. lightningprotection, safe cable runs (refer to Chapter 6 “Installation of theTelelink-H”).

the antenna is connected. the power supply unit is properly connected to the mains of the cor-

rect voltage.

Following the procedure for the first log-on of a Telelink-H to the Tele-center-H (registration) is given. The sequence as stated here is recom-mended, though it is not a compulsory one. The acoustic signals can bemonitored via the speaker of the handset.

1. Connect a telephone device with keypad and tone dialling to theTelelink-H (see Section 6.5 “Installing the Customer’s TelephoneEquipment”).

2. Lift off the handset. You should hear the busy tone, i.e. the Tele-link-H is operational but not registered with the Telecenter-H.Busy tone: Individual 440 Hz tones, 400 ms duration, 400 mspause.

3. Within 10 s: Enter the password

Key in the 4 digit password including start (#) and end (*) char-acter (1 s interdigit time, otherwise the characters dialled are rec-ognised as dialling digits).

# _ _ _ _ *


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After successful password input, an acknowledgement tone isgiven.Acknowledgement tone: 3 individual 1000 Hz tones, 200 ms dura-tion, 200 ms pause.

The input is time-out controlled. If between lifting the handsetand keying the first character pass more than 10 s, the Telelink-H falls back to the busy tone. Hang up and start again withStep 2.

In case of miskeying hang up and start again with Step 2.

If successful, the device is switched to service mode.

4. Service mode, ringing test

Press “2” and hang up.

The telephone bell should ring, until terminated by lifting thehandset again but 5 s max. If you do not lift the handset withinthe 5 s, the Telelink-H returns to its idle status (busy tone).

Lift the handset while the bell is ringing. The Telelink-H remainsin service mode.

5. Service mode, dialling test

Press “3”.

The Telelink-H now allows the dialling test.

Press all number keys, one by one, as well as the hash and aster-isk key.

The Telelink-H acknowledges each key with a short pulse se-quence with the number of pulses indicating the key detected.Acknowledgement tone: Individual 600 Hz tones, 100 ms dura-tion, 100 ms pause.


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Key Number of pulses Notes

1 1

2 2

·

··

9 9

0 10

* 11

# 12 Test termination character

Table 7-1Keys and pulse numbers

When pressing the hash, “#”, the 12 acknowledgement pulses aresent and the test will be terminated. The Telelink-H remains inservice mode.

6. Service mode, data input for registering

Press “0” for registering using the maximum transmitter power.

or

Press “1” for registering using a reduced transmitter power (sen-sible within the near range of the Telecenter-H, signal receptionlevels of > –60 dBm at the Telelink-H).

or

Press “9” for registering a pay-phone that needs line reversal onthe Tip/Ring interface at the start and end of the metered time(start and end of call).

The acoustic request signal of the Telelink-H for input of thefrequency range is sent.Request tone: Single 600 Hz tone, 100 ms duration.

Key in the 3 digit frequency code number that represents thefrequency range assigned to this Telecell-H system.

In case of an invalid number, the Telelink-H falls back intoservice mode.

If successful, the Telelink starts the receipt signal level test imme-diately (tone frequency 300 ... 1400 Hz, refer to Section 8.4“Receipt Signal Level Test”, and LED level display, refer to Table4-2). However, because the antenna position has been deter-


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mined already (Section 6.1 “Checking the Installation Location”),you can terminate this test:

Key in the hash key (#).

The acoustic request signal for input of customer phone number issent.Request tone: Two 600 Hz tones, 100 ms duration, 100 ms pause.

Key in the 4 digits of the Telelink-H number.

In case of an invalid number, the acoustic request signal is re-peated, try again starting with the first one of the last 4 digits.

If successful, the acoustic request signal for acknowledgement ofdata input is sent.Request tone: Alternating 300/600 Hz tones, 100 ms durationeach

You may terminate the procedure at any time (e.g. after inputof a wrong telephone number) by hanging up the handset. Ifso, start again with Step 2. Urgently hang up the handsetnow if you are not absolutely sure having keyed in thecorrect telephone number.

Press the hash (#) key.

The hash key initialises the automatic registering of the Telelink-Hwith the Telecenter-H using the organisation channel immedi-ately followed by a power service (transmission power adjust-ment). The power service is accompanied by an acoustic signal.The registering procedure cannot be interrupted anymore.Acoustic signal: Short beeps starting at a low frequency shifting toa high frequency (the higher the frequency, the lower the trans-mission power).

Registering acknowledgement: A voice message generated by the Telecenter-H acknowledges

the successful registering. (Voice message: Customer specific). A busy tone indicates the rejection of the registration by the

Telecenter-H (Telecenter-H account not opened).

Hang up the handset.

The Telelink-H exits the service mode and is operational.

If the automatic registering has been unsuccessful (e.g. an errorhas occurred), a busy tone is sent by the Telelink-H. Hang up the


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handset and start again with Step 2. Ringing and dialling test maybe skipped. Reasons for the lack of success may be an insufficienttransmit/receive field intensity (refer to Section 6.1 “Checking theInstallation Location”) or a wrongly installed antenna.

7. Test calls

Lift the handset.

The idle tone is the assurance, that the automatic registering pro-cedure was successfully, even in case the voice message was notreceived.

If no idle tone is present (then you should hear a busy tone), abreak down of the radio link may have occurred. Check the Tele-link-H as stated above (at the beginning of this Section 7.2“Registering the Telelink-H”). Other causes may be at the Tele-center-H side, e.g. an allocation of all the radio channels availableto phone calls, or changed radio propagation conditions since theantenna location has been chosen. You may retry at differenttimes.

Call a phone number where somebody is available to answeryour call (e.g. operator). Check whether both sides receivean acceptable signal (subjective impression).

Get the other party to call you. Check again, whetherboth sides receive an acceptable signal.

If the signal is not acceptable (e.g. too much noise) optimisethe antenna position or use an antenna with a higher gain,see Chapter 5 “Information about Telelink-H Location” and 6“Installation of the Telelink-H”.

If it is intended, to use the customer interface for any type of elec-tronic communications (e.g. fax, modem), you may test the op-eration of that equipment, too.

8. In case you have used the customer equipment: Make sure thatno secret information (phone or code numbers) are stored in thememory of these devices. If necessary, dial unsuspicious num-bers to overwrite any secret ones.

Notes The sequence of Steps 4, 5 and 6 is not compulsory though sensible. Step 4 and 5 may be omitted, which is sensible in case of a procedure

repetition caused by circumstances not related to ringing or diallingproblems.


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Step 4 and 5 may be repeated with any Telelink-H (including regis-tered ones). To enter the service mode:– Lift the handset (the idle tone is sent).– Key in the password as described in Step 3.

Once successfully completed, Step 6 cannot be repeated using thesame Telelink-H number (whether using the same Telelink-H or an-other one). Such request will be ignored.However, if in the number scheme you set the LgL flag for thatnumber again, registration of any Telelink-H to that number is possi-ble again (refer to Section 7.1 “Opening the Telelink-H Account“ andManual “Telecenter-H Operation and Maintenance System (OMS)“or “Telecenter-H OMS for Windows”), reregistering of a Telelink-Hto that number is possible (Step 6).

If voice and tone signals are received distorted only by the phonecustomer, the reason may be a too low loop current on the Tip/Ringline. Change the external configuration (shorter Tip/Ring line, lessload on the line etc.)

7.3 Registering to Test Number

When registering a Telelink-H, it has to be registered to a dedicated ac-count (phone number) opened at the Operation and Maintenance Sys-tem (OMS). If for some reason (e.g. radio interference problems) theregistration fails, it may well be that the account will be closed none-theless for any further registering attempts by the Telecenter-H.

If you expect trouble during registering of the Telelink-H, you may reg-ister it to one of the two test accounts (the same procedure as describedin Section 7.2 “Registering the Telelink-H”). These accounts allow re-peated registering, whether successful or not. There is however, no callpossible on these accounts. This way you may test that registering ispossible at a certain site and – if so – register then to the correct ac-count.

The phone numbers of these test accounts are the service phone num-bers of the SAC module (Port A and B). These may differ from installa-tion to installation. Please check with the staff operating the Operationand Maintenance System (Manual “Telecenter-H Operation and Main-tenance System (OMS)” or “Telecenter-H OMS for Windows”) whatnumbers within the numbering scheme are allocated to the SAC mod-ule.


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7-8

7.4 Registering, Memory Aid

The following table summarises the information given in Section 7.2“Registering the Telelink-H“. It is intended as a memory aid for themore experienced technician.

Procedure Keys Tone Frequency Notes

Lift handset Busy tone440 Hz, 400/400 ms

Telelink-H is operational but notregistered

Key in password # _ _ _ _ * Acknowledgement tone3 x 1000 Hz, 200/200 ms

Switching over to service mode(1 s interdigit time, otherwise thecharacters dialled are recognisedas dialling digits)

Ringing test 2 (hang up) Bell ringing Lift handset within 5 s otherwiseend of service mode

Dialling test 3, then all keys in a row(1 ... 9, 0, *, #)

Acknowledgement pulsesaccording to key pressed600 Hz, 100/100 ms

Test termination character: #

Prepare for registering –data input

0 or 1 or 9 Frequency code request tone600 Hz, 100 ms

0 Full transmission power1 Reduced transmission power9 Line reversal mode (pay-

phone), full transmissionpower

Whether you use full or reduced

Key in frequency codenumber

_ _ _(digits as appropriate forTelecenter-H system)

Receipt level indication300 .... 1400 HzLED level display

Refer to Section 8.4 “ReceiptSignal Level Test” and Table 4-2

Key in termination charac-ter

# Phone number request tone2 x 600 Hz, 100/100 ms

Key in phone number _ _ _ _(last 4 digits of phonenumber)

Acknowledgement requesttone300/600 Hz, 10 ms each

Automatic upset of linkTelelink-H – Telecenter-H

# Acknowledgement toneShort beeps starting at a lowfrequency shifting to a highone

The Telelink-H registers with theTelecenter-H. Success is acknowl-edged by a voice message sentby the Telecenter-H

Test calls Dial a number as appro-priate

Check for an acceptable signal atboth sides.Additionally get called at theTelelink-H number.

Table 7-2Registering procedure, summary

Maintenance and Service, Cleaning

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8 Maintenance and Service, Cleaning

Inside the casings (Telelink-H and in-line power supply) are no fieldserviceable parts. Service and maintenance is the task of suitably trainedand supervised personnel at a service centre only.

The Telelink-H requires little maintenance only.

8.1 Failures

A malfunction may show up in several ways. First check the LEDs. Thelower three LEDs indicate power supply problems (green and red) andradio transmission problems (yellow), refer to Table 4-1. The upper 5LEDs indicate the receipt signal strength, Table 4-2. To ensure, the mal-function is actually caused by the Telelink-H, check as follows.

1. Check the mains voltage is available and of the correct voltage(see label on the in-line power supply).

2. Check the external connections of the Telelink-H (mains, tele-phone, antenna). Make sure the connectors are properly seatedand the cables not damaged. Make sure that any outdoor con-nections and grounding kits (antenna cable) are properly sealed.If in doubt, replace cable by cable.

3. Check that the antenna is in good order.

4. Replace the customer’s telephone equipment by a telephone, youknow of that it does work, and connect it to the Telelink-H RJ-11socket directly.

5. Replace the Telelink-H by a device you know of that it does workand that is registered with the Telecenter-H.


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If the Telelink-H itself is faulty, replace it by a new device dedicated tothat customer (refer to Section 7.1 “Opening the Telelink-H Account”).Register the new device according to Section 7.2 “Registering the Tele-link-H” or 7.4 “Registering, Memory Aid”. Do not replace the Telelink-Hby just any used Telelink-H, to make sure, the customer is administeredcorrectly.

8.2 Cleaning

Remove the mains plug from the wall socket before cleaning theTelelink-H or in-line power supply casing. Otherwise water running in-side could produce a health hazard.

If necessary, clean the plastic cover using a mild detergent and a wet,lint-free cloth. To ensure, that no water can run inside the casing, forcleaning you should remove the plastic cover from the housing.

8.3 Service Mode Functions

Several Telelink-H tests are available in service mode. You need thepassword (4 digits) to enter the service mode, which is available fromyour project manager.

Entering the service mode


2. Lift off the handset.

3. Within 10 s: Enter the password

Key in the 4 digit password including start (#) and end (*) charac-ter (1 s interdigit time, otherwise the characters dialled are recog-nised as dialling digits).

# _ _ _ _ *

After successful password input, an acknowledgement tone isgiven.Acknowledgement tone: 3 individual 1000 Hz tones, 200 ms dura-tion, 200 ms pause.

The Telelink-H is switched to service mode.

Service mode functions

Warning

!


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8-3

The tests listed in the table below are available in service mode only.With the exception of the functions for initial registering, the Telelink-Hremains in service mode after the end of each single test/function, thenext test can be carried out immediately.

Note: All tests test the Telelink-H (or the functions set up the Telelink-H), the telephone device is only a terminal!

Start a test/function by pressing the corresponding key on the tone dial-ling telephone device.

Test/function Key Description

Initial registration 0 Initial registration with max. transmit power. Refer toSection 7.2 “Registering the Telelink-H”

Initial registration 1 Initial registration with reduced transmit power. Refer toSection 7.2 “Registering the Telelink-H”

Ringing test 2 1. Press key 2 in service mode.2. Hang up handset.

The telephone rings (max. 5 s).3. Lift off handset again within 5 s.

Dialling test 3 1. Press key 3 in service mode2. Press any key.

A short sequence of pulses is audible, the number ofpulses corresponds with the key pressed (refer toTable 7-1).

3. Press the hash key (#).A sequence of 12 pulses is audible, after which thetest will be terminated.

Tone generator test 4 An audible tone sequence is output – going up from 0.3to 1.6 kHz.

Scrambler On/Off 5 The scrambler is switched (on or off), e.g. to checkwhether communication quality problems could besolved using a different setting.Acknowledgement tone: 1 kHz (high) – Scrambler On 300 Hz (low) – Scrambler OffWhile the Telecenter-H recognises the scrambler settingsetup here, the number scheme will not be updated toreflect any changes. Therefore, if the Telecenter-H initi-ates a Telelink-H service routine, the original setting willbe reinstalled. If a different setting is desirable, this needsto be setup at the Operation and Maintenance System,refer to Manual “Telecenter-H Operation and Mainte-nance System (OMS)” or “Telecenter-H OMS forWindows”.


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8-4


Tip/Ring line testmode

6 In Tip/Ring line test mode, the particular test is selectedby pressing another digit:1 Metering pulses. 5 metering pulses at intervals of

about 1 s are generated and output (metering pulsesof 16 kHz if Telelink-H is not yet registered, otherwisethe frequency is according to the configuration at theOMS, refer to Manual “Telecenter-H Operation andMaintenance System (OMS)” or “Telecenter-HOMS for Windows”). Please note that the filterhardware in the Telelink-H is specified either for 12 or16 kHz, i.e. if the Telelink-H is specified for 12 kHz a16 kHz pulse will be emitted at a rather low poweronly.

2 Full line reversal. A single line reversal pulse is gener-ated (with return to original state)

3 Line reversal. A single line reversal (Tip/Ring toRing/Tip) is generated. (Pressing 3 again toggles backto original state)

4 Ringing and line reversal. Proceed as follows:– Press 4.– Hang up handset.

The telephone rings.– While still ringing: Pick up handset.

???

Optional RS 485interface

7 Toggles state of optional Telelink-H RS 485 interfacebetween On and Off.Acknowledgement tone: 1 beep of 600 Hz – RS485 On 2 beeps of 600 Hz – RS485 Off

Reserved 8

??? Reserved ???Initial registration

9 Initial registration of a pay-phone with line reversal at callstart and end (max. transmit power is used). Refer toSection 7.2 “Registering the Telelink-H” ???


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Activating/ deacti-vating of testlinkmode for organisa-tion channel analysis

* Telelink-H is set as testlink (for analysis of the error rate inthe organisation channel, refer to Manual “Telecenter-HOperation and Maintenance System (OMS)” or“Telecenter-H OMS for Windows”. A testlink canonly be a Telelink-H which has only one phone numberassigned to it (no 2 phone numbers even it may be aparty line Telelink-H).The following procedure switches a Telelink-H into test-link mode or back:1. Press key “*” in service mode.

A 600 Hz tone is generated.2. Key in the four digit Telelink-H number (refer to

Section 7.2 “Registering the Telelink-H”, Step “Servicemode, data input for registering”).A 1000 Hz tone (testlink mode activated) or 300 Hztone (testlink mode deactivated) is generated.

In testlink mode indicator functions of the lower greenand yellow LED are exchanged between both LEDs. ???

A Telelink-H in testlink mode operates with respect to thephone call capabilities like any Telelink-H, i.e. the analysiswill be interrupted for any call setup request. However itis not advisable to operate a customer Telelink-H in tes-tlink mode permanently. For a permanent monitoring ofthe signal propagation quality, a Telelink-H used for theorganisation channel analysis only should be installed at aplace critical for the radio wave propagation.

For a correct organisation channel analysis, withinthe Telecell-H system one Telelink-H only should beoperated in testlink mode .

Setup of max. lengthof flash pulse

# In order to be recognised as flash pulse, the signal mustfit into a given time window. Pressing the next key, therecognised flash pulse length is set to 75 ... 310 ms (default; key 1; 1 acknowledgement

beep of 600 Hz) 75 ... 500 ms (key 2; 2 acknowledgement beeps of 600

Hz) 75 ... 900 ms (key 3; 3 acknowledgement beeps of 600

Hz)The flash pulse configuration is always set for bothTip/Ring interfaces.

Table 8-1Service tests and functions

8.4 Receipt Signal Level Test

The Telelink-H provides the means for determining the receipt signallevel. Because the receipt signal level strongly depends on the antennaposition and adjustment, the receipt signal level test provides a meansfor determining the best possible antenna position.


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The signal level is indicated by the five upper LEDs. The range is fromabout –92 ... –57 dBm. Depending on the Telelink-H operation mode,two resolutions are available: In standard operation mode about 10 dBresolution (the LEDs operate like a indicator bar), in service mode about2 dB (the LEDs display the level in binary mode), refer to Table 4-1 andTable 4-2.

The service mode receipt signal level test is programmed as part of theTelelink-H initial registration. The test may however be invoked at anytime and terminated without going through the whole registrationroutine. The test indicates the signal level of the organisation channel.

Proceed as follows, to do the receipt signal level test.


2. Lift off the handset, wait for the dialling tone (busy tone if Tele-link-H is not yet registered).

3. Within 10 s: Enter the Telelink-H service password

Key in the 4 digit password including start (#) and end (*) char-acter.

# _ _ _ _ *After successful password input, an acknowledgement tone isgiven.Acknowledgement tone: 3 individual 1000 Hz tones, 200 ms dura-tion, 200 ms pause.

If successful, the device is switched to service mode.

4. Press “0” (maximum transmitter power) or “9” (pay-phone).

The acoustic request signal of the Telelink-H for input of thefrequency range is sent.Request tone: Single 600 Hz tone, 100 ms duration.

5. Key in the 3 digit frequency code number that represents thefrequency range assigned to this Telecell-H system.

In case of an invalid number, the Telelink-H falls back intoservice mode.

In case of a valid but wrong number, the Telelink-H cannotcommunicate with the Telecenter-H any longer. Hang up the


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handset and repeat Step 2 to 5 using the correct frequencycode.

If successful, the Telelink starts the service mode receipt signallevel test immediately. Refer to Table 4-2 for reading the test re-sults.

6. Move around with the antenna to determine the position withthe best receipt signal level (highest stable value displayed by theLEDs).

7. To terminate the registering procedure:

Key in any key except the hash (#). The Telelink-H remains inservice mode.

To proceed with the registering procedure:

Key in the hash key (#). Refer to Section 6.1 “Checking the In-stallation Location” for further instructions.

The receipt signal level test has been terminated.

Disposal

Chapter 9



9-1

9 Disposal

When you must dispose of the Telelink-H, dispose of it in a safe wayand according to local and national requirements. You should not giveit to the domestic waste. If possible, have the parts recycled as appropri-ate.

The Telelink-H contains electronic components and should be dis-posed of in the same way as you would do with computer or TV de-vices.

The optional NiMH batteries of the power supply unit should bedisposed of as special waste.

The power supply unit contains electronic components and shouldbe disposed of in the same way as you would do with computer orTV devices.

Technical Data Telelink-H

Chapter 10



10-1

10 Technical Data Telelink-H

Weight and dimensions

Telelink-H functional unit:Height 278 mmWidth 169 mmDepth 58 mmWeight ca. 1.8 kg

Telelink-H coverHeight 298 mmWidth 199 mmDepth 52 mmWeight ca. 0.25 kg

Telelink-H assembledHeight 298 mmWidth 199 mmDepth 75 mmWeight ca. 2.1 kg


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Width

Height

Depth

Figure 10-1Telelink-H, dimensions

Installation

Hanging at a wall Not exposed to direct sunshine and not in the vicinity of heat sources Minimal clear space: Refer to Figure 6-1, Section 6.3 “Installing the Telelink-

H”

Environmental Conditions

Temperature, operation –5°C ... 55°C (ETS300 019-1-3 class 3.2 indoor)Temperature, storage –25°C ... 55°C (ETS300 019-1-1 class 1.2)Temperature, transport –40°C ... 70°C (ETS300 019-1-2 class 2.3)Relative humidity 20% ... 90%, non condensing ???Installation height < 3000 m above sea level ???

Power

Input voltage 10.0 ... 14.4 V DC from external power supply unitPower consumption Stand-by: approx. 4 W (UInput < 13.3 V)

Operation: < 25 WPower indicator LED, lower green

– Off – Telelink-H off (no supply voltage)– On – Standard operation– Flashing – Low power (UInput < 12 V)LED, red– Off – Power status according to green LED– On – Overvoltage (UInput > 12 V ??? )

RF interface

Receive signalFrequency 1 frequency fixed,

in the range of 800 – 1000 MHz or 350 – 500 MHz,selected in steps of 50 kHz from a band of about4.5 MHz (depending on Telelink-H frequency ver-sion) at commissioning


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Modulation FMBand width 1.6 MHzReceiverSensitivity – 90.0 dBm at signal/noise ratio = 20 dBChannel selection Any 1 out of 118 at transfer frequency rangeRx indicator LED, yellow, stand-by only

– On: Good signal, 50% of all organisationchannel frames decoded

– Off: No decodable signalTransmit signalBand centre frequency 1 frequency fixed, 45 or 10 MHz duplex distance

below receive signal frequencyChannel distance 12.5 kHzChannels 1 out of 118 according to received channelModulation FMTransmitterTransmitter power max. 3.2 W (35 dBm) at fTx = 350 ... 490 MHz

max. 1.6 W (32 dBm) at fTx = 800 ... 950 MHzAuto adjusting (power service)Max. power may be reduced by 3 dB when envi-ronmental temperatures >40°C and input voltage>13.3 V DC

Antenna impedance 50 ΩAntenna socket TNC femaleAntennaChoice of different types according to frequency and gain needed

Interface to customer devices

Interface standard Tip/Ring (a/b) according to ITU Q.552;others on request

Impedance 600 Ω nominalCustomer’s device supply voltage

– 30 VRing battery voltage 40 VRMS min.Ring frequency 16/20/25 Hz (adjustable at Telecenter-H)Loop current/resistance Limits: 25 mA at 800 Ω / 40 mA at 150 ΩLine reversal pulse 500 ms at call start and call end (for pay-phones,

configurable at Telelink-H)(others on request)Call start and end must be indicated by the localexchange for line reversal pulses to be output

Dialling modes DTMF according to ITU Q.23Decadic rotary pulse

Flash pulse 75 ms min.310/500/900 ms max. (configurable at Telelink-H)

Metering pulse 12/16 kHz (filter hardware ex works specified foreither frequency), –2 dBm at 600 Ω, 100 ms (oth-ers on request)Metering pulses must be issued by the local ex-change, the Telecell-H only passes on such me-tering pulses

Interface socket RJ-116 pin positions, 4 pinsTip (a) Pin 3Ring (b) Pin 4


Chapter 10



10-4

Maximum distances

Telecenter-H – Telelink-H antennaDepending on radio wave propagation condi-tions– 30 km ideal radio wave propagation– up to 20 km typical in rural area– up to 10 km in urban area (town)

Telelink-H antenna – Telelink-H casingpreferably less than 3 m cable length (the shorter,the better)

Telelink-H casing – customer’s telephone apparatusseveral 100 m (observe loop resistance limit, seeParagraph “Interface to customer devices” above)

Safety

Casing IP 31EMC Telelink-H: According to I-ETS 300 279

FM carrier: ETS 300 086 and EN 50091-2 (as far asadaptable)

General safety CE conformity declarated

Options

Metering pulses to the customer devices Solar power supply for the Telelink-H

Accessories

Mounting kit Screws and dowels for wall mountingExternal power supply unit Optional, in-line type

– Input voltage: 85 ... 265 V AC– Output voltage: 12 V ±20%??? Hier laufen EMV- und Telelink-Specs ausein-

ander! 12 V – 20% = 9.6 V < 10.0 V ???– Max. output power: 25 W– Efficiency: >75% at UInput = 230 V AC– Order number: AC 104 888

Antennas Rod and Yagi antennas

Index

Chapter 11



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11 Index

Aaccount, Telelink-H 7-1antenna location 5-1antenna socket 4-1

Bbusy tone 4-5

CCaution 2-2code number 7-2CTU 3-1customer station socket 4-1customer terminal unit 3-1

Ddial tone 4-5dialling test 7-3Dialling test 8-3direct connection, telephone 6-6directional antenna 5-2Disposal 9-1

Ffailures 8-1flash pulse 8-5

Ggreen LED 4-1

Iindicators 4-1Indoor antenna 5-3Initial registration 8-3Installation personnel 3-2

LLight pipes 3-3lightning protection 5-3low battery warning tone 4-5

MMetal surfaces/objects 5-2Metering pulse test 8-4

Nnaming conventions 3-2natural convection 5-3NiMH 2-2

Oobstructions, wave propagation 5-2organisation channel analysis 8-5overvoltage protector 5-3

Ppassword 7-2phone number 7-2pin assignment 4-5power supply socket 4-1Power supply unit 3-3

Index

Chapter 11



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Qquestionnaire form 6-1

Rradio wave propagation, test 8-5receipt signal level 8-5red LED 4-1registering the Telelink-H 7-1ringing test 7-3Ringing test 8-3Ringing waveform 8-4RJ-11 4-1

SScrambler On/Off 8-3separate telephone socket 6-7service mode 8-2service personnel 8-1sockets 4-1Structure of the Manual 3-2subsystems, Telelink-H 3-1switch-off Telelink-H 8-4

TTelelink-H 2 3-2Telelink-H account 7-1Telelink-H cover 3-3Telelink-H functional unit 3-3testlink mode 8-5Tests 8-3Thick walls 5-2Tone generator test 8-3tones (generated by Telelink-H) 4-5transmission quality, sufficient 6-2troubleshooting 8-1

UUse of the Telelink-H 3-1

WWarning 2-2

Yyellow LED 4-1

Telecell-H - Telelink Installation

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