Alarm and electronic security systems - Social alarm systems - Part 5: Interconnections and communications

IEC 62851-5:2014 specifies the minimum requirements for the interconnections and communications within a social alarm system.

Systèmes d'alarme et de sécurité électroniques - Systèmes d'alarme sociale - Partie 5: Liaisons et communications

L'IEC 62851-5:2014 spécifie les exigences minimales des liaisons et communications au sein d'un système d'alarme sociale.

General Information

Status
Published
Publication Date
09-Apr-2014
Current Stage
PPUB - Publication issued
Start Date
10-Apr-2014
Completion Date
10-Apr-2014
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IEC 62851-5
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm and electronic security systems – Social alarm systems –
Part 5: Interconnections and communications
Systèmes d'alarme et de sécurité électroniques – Systèmes d'alarme sociale –
Partie 5: Liaisons et communications
IEC 62851-5:2014-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62851-5
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm and electronic security systems – Social alarm systems –
Part 5: Interconnections and communications
Systèmes d'alarme et de sécurité électroniques – Systèmes d'alarme sociale –
Partie 5: Liaisons et communications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 13.320 ISBN 978-2-8322-1503-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62851-5:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and abbreviations ............................................................................... 6

3.1 Terms and definitions ......................................................................................... 6

3.2 Abbreviations ..................................................................................................... 7

4 General requirements ...................................................................................................... 7

5 Interconnections .............................................................................................................. 7

5.1 General requirements ........................................................................................ 7

5.2 Requirements for two-way speech communication ............................................. 8

6 Communications .............................................................................................................. 8

6.1 General requirements ........................................................................................ 8

6.1.1 General ............................................................................................ 8

6.1.2 Environmental requirements ............................................................. 8

6.1.3 Access levels .................................................................................... 9

6.2 Non-dedicated paths .......................................................................................... 9

6.3 Dedicated paths ................................................................................................. 9

6.4 Voice communicators ......................................................................................... 9

7 Tests ............................................................................................................................... 9

7.1 Determining availability ...................................................................................... 9

7.2 Method for determining availability ..................................................................... 9

Bibliography .......................................................................................................................... 11

Table 1 – Transmission types ................................................................................................. 8

Table 2 – General communication requirements for a social alarm system .............................. 8

---------------------- Page: 4 ----------------------
IEC 62851-5:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ALARM AND ELECTRONIC SECURITY SYSTEMS –
SOCIAL ALARM SYSTEMS –
Part 5: Interconnections and communications
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62851-5 has been prepared by IEC technical committee 79: Alarm

and electronic security systems.
This first edition is based on EN 50134-5:2005.
The text of this standard is based on the following documents:
FDIS Report on voting
79/459/FDIS 79/470/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 5 ----------------------
– 4 – IEC 62851-5:2014 © IEC 2014

A list of all parts in the IEC 62851 series, published under the general title Alarm and

electronic security systems – Social alarm systems, can be found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 62851-5:2014 © IEC 2014 – 5 –
INTRODUCTION

This standard is part of the IEC 62851 series of International Standards and Technical

Specifications “Alarm and electronic security systems – Social alarms systems“, written to

include the following parts:
– Part 1: System requirements
– Part 2: Trigger devices
– Part 3: Local unit and controller
– Part 5: Interconnections and communications
– Part 7: Application guidelines (under consideration)

A social alarm system provides 24 hours facilities for alarm triggering, identification, signal

transmission, alarm reception, logging and 2-way speech communication, to provide

reassurance and assistance for people living at home or at places under surveillance and

considered to be at risk.

A social alarm system is comprised of a number of system parts which can be configured in

different ways to provide this functionality.

A user can request assistance by the use of a manually activated trigger device resulting in

an alarm triggering signal. In certain cases, alarm triggering signals can be generated by

automatic trigger devices. A local unit or controller receives the alarm triggering signal,

switching from the normal to the alarm condition and indicating this to the user (some systems

use an optional pre-alarm condition that allows the user to reset the alarm for a short period

of time).

The controller normally transmits the alarm condition to an Alarm Receiving Centre (ARC) via

the alarm transmission system. The ARC can either be local to the controller or remote from

the controller. The ARC has the facility to identify the local unit, alarm type and to then

establish two-way speech communication between the alarm recipient and the user. The

alarm recipient provides reassurance to the user and directs assistance where appropriate.

In some cases, the alarm may be diverted to an alarm recipient using a personal receiver. In

this case, the alarm is identified to the alarm recipient and a two-way speech communication

path established to the user and receipt of the alarm acknowledged to the controller. In all

cases, the system records the time, date, location and type of alarm.

The system is designed to detect and report fault conditions affecting the transmission of

alarms. In some cases, temporary disconnection of a local unit is possible to minimize faults

or prevent alarms triggered inadvertently affecting the correct operation of the system.

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– 6 – IEC 62851-5:2014 © IEC 2014
ALARM AND ELECTRONIC SECURITY SYSTEMS –
SOCIAL ALARM SYSTEMS –
Part 5: Interconnections and communications
1 Scope

This part of IEC 62851 specifies the minimum requirements for the interconnections and

communications within a social alarm system.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

IEC 62851-1, Alarm and electronic security systems – Social alarm system – Part 1: System

requirements

IEC 62851-3:2014, Alarm and electronic security systems – Social alarm system – Part 3:

Local unit and controller

EN 50136-1-1:1998, Alarms systems – Alarm transmission systems and equipment – Part 1-1:

General requirements for alarm transmission systems

EN 50136-2-1:1998, Alarm systems – Alarm transmission systems and equipment – Part 2-1:

General requirements for alarm transmission equipment

EN 50136-2-2:1998, Alarm systems – Alarm transmission systems and equipment – Part 2-2:

Requirements for equipment used in systems using dedicated alarm paths

EN 50136-2-3:1998, Alarm systems – Alarm transmission systems and equipment – Part 2-3:

Requirements for equipment used in systems with digital communicators using the public

switched telephone network

EN 50136-2-4:1998, Alarm systems – Alarm transmission systems and equipment – Part 2-4:

Requirements for equipment used in systems with voice communicators using the public

switched telephone network
3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62851-1, as well as

the following apply.
3.1.1
fault reporting time

maximum interval from the time a fault occurs in the interconnection until the transmission of

a fault signal is initiated by the controller
---------------------- Page: 8 ----------------------
IEC 62851-5:2014 © IEC 2014 – 7 –
3.1.2
interconnections

transmission system that provides the communication between trigger devices and local unit

and controller
3.1.3
pre-alarm warning indication
indication at the local unit that the local unit is in the pre-alarm condition
3.1.4
reassurance indication

indication provided locally in alarm condition in order to verify to the user that the local unit

has received the alarm triggering signal
3.1.5
reference impedance

a complex impedance made up of 270 Ω in series with a parallel combination of 750 Ω and

150 nF
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
CCIR International Radio Consultative Committee
CCITT International Telegraph & Telephone Consultative Committee
CEPT Conference of European Posts & Telecommunications
DTMF Dual tone multi-frequency
EMC Electromagnetic compatibility
ETSI European Telecommunications Standardisation Institute
FSK Frequency shift keying
PSTN Public switched telephone network
4 General requirements

Equipment and systems shall meet appropriate local, national and international requirements

and regulations for attachment to, establishment and termination of connection and

transmission via public telephone and data networks (including the PSTN) and/or the

regulations for transmission via the use of radio, power distribution systems or cable

distribution systems.
5 Interconnections
5.1 General requirements

The list below gives the general requirements for interconnections and communication applied

to a social alarm system:

a) Interconnections in a social alarm system can use one or both of the transmission types in

Table 1.
---------------------- Page: 9 ----------------------
– 8 – IEC 62851-5:2014 © IEC 2014
Table 1 – Transmission types
Transmission type Examples
Wired Leased lines/fixed wired connections/optical fibre link
Wire free Radio network/cellular system, infra red

b) The interconnection in a social alarm system shall have an availability that fulfils the

requirement set out in EN 50136-1-1:1998, Table 4, class A3.
NOTE 1 Method of determining availability is described in 7.2.

c) For wire free trigger devices using a radio interconnection, without managed spectrum

access only radio frequencies dedicated to social alarm systems shall be used for the

transmission of alarm and fault conditions.

NOTE 2 For wire free interconnections the availability of the interconnection is monitored not the availability

or the correct functioning of the trigger device.
5.2 Requirements for two-way speech communication
See IEC 62851-3:2014, 4.2.4.
6 Communications
6.1 General requirements
6.1.1 General

The alarm transmission system path in a social alarm system shall fulfil the requirements in

Table 2.
Table 2 – General communication requirements for a social alarm system
Requirement EN 50136-1-1:1998
Table/Subclause Class
Transmission time Table 1 D3
Maximum time Table 2 M3
Reporting time – Combined local unit & controller Table 3 T1
Reporting time – Separate local unit & controller Table 3 T2
Availability Table 4 A1
Signalling security – Substitution security Subclause 6.5.1 S0
Signalling security – Information security Subclause 6.5.2 I0

NOTE The transmission time in a social alarm transmission system is the time measured from when the local unit

and controller enters the alarm condition until the alarm condition is reported at the alarm receiving centre

transceiver to the annunciation equipment.
6.1.2 Environmental requirements

The EMC and environmental requirements as described in IEC 62851-3 shall apply for the

alarm transceiver in a social alarm system.

NOTE An alarm system transceiver at the user’s premises in a social alarm system is an integral part of the local

unit and controller.
---------------------- Page: 10 ----------------------
IEC 62851-5:2014 © IEC 2014 – 9 –
6.1.3 Access levels

The access levels described in EN 50136-2-1 shall apply to a social alarm system. However,

for access level 3 in a social alarm system, communication of local or remote access to

parameters affecting the system configuration to the ARC is not a system requirement.

6.2 Non-dedicated paths

The alarm transmission equipment in a social alarm system connected to the PSTN shall

comply with the requirements in EN 50136-2-3. For social alarm systems 5.3.1 and 5.3.5 of

EN 50136-2-3:1998 shall not apply. Equipment shall be tested in accordance with the

requirements of EN 50134-3.

NOTE Alarm and fault signals can be transmitted digitally to an ARC in a social alarm system e.g. using DTMF or

FSK signalling technologies.
6.3 Dedicated paths

If the system uses a dedicated path then the requirements in EN 50136-2-2 shall apply.

Equipment shall be tested in accordance with the requirements of IEC 62851-3.
6.4 Voice communicators

If the system transmits the alarm or fault signal using a voice communicator then the

requirements in EN 50136-2-4 for type 3 voice communicators shall apply. Where repeat

attempts to transmit are made no more than one call to each available number shall be made

before an attempt is made to call the ARC subject to the total transmission time not exceeding

the maximum permissible time in Table 2. Equipment shall be tested in accordance with the

requirements of IEC 62851-3.
7 Tests
7.1 Determining availability

In a social alarm system it is not possible to test or measure availability of the

interconnection. This subclause describes how to calculate the availability of the

interconnection in a social alarm system using records of faults and performance verification

over a specified period time.
7.2 Method for determining availability
The list below gives the method for determining availability:

a) records of faults shall include those affecting redundant paths or equipment, where these

are required to comply with specified class of availability and where no service was lost;

b) the records of all faults and all performance verification tests carried out on the

interconnections in a social alarm system shall be used to determine the availability of the

interconnection;

c) for each occasion when the system is unavailable the duration of the fault shall be

determined and a fault time calculated as follows:
FT = (DF + TR) × NA (min)
where
FT is the fault time in minutes;

DF is the duration in minutes from when the fault was identified to when the fault cleared;

TR is the maximum fault reporting time in minutes for the appropriate class;
NA is the number of connected local units where service is affected.
---------------------- Page: 11 ----------------------
– 10 – IEC 62851-5:2014 © IEC 2014
For each month the availability of the system shall be calculated as:
MA = (1 – (SF / (43 800 × NC))) × 100 (%)
where
MA is the monthly availability in percent;
SF is the sum of fault times in minutes;
NC is the average number of local units connected during the month.

NOTE 1 43 800 is the average number of minutes in one month (excluding leap years) e.g. (365 × 24 × 60) / 12.

The sum of fault times shall be for all faults cleared during a month.

The 12-month system availability shall be the arithmetic mean of the monthly availability for

12 successive months.

NOTE 2 The organisation responsible for the transmission system can give an estimated availability figure for the

system at the initial commissioning.

Where the interconnection contains transmission segments obtained from a public switched

network provider the availability of that part of the system can be determined from published

information from the organisation responsible.
The overall availability shall be calculated using the formula:
MA = MA × Network availability (%)
(overall)
---------------------- Page: 12 ----------------------
IEC 62851-5:2014 © IEC 2014 – 11 –
Bibliography
IEC 62599-1, Alarm systems – Part 1: Environmental test methods

IEC 62599-2, Alarm systems – Part 2: Electromagnetic compatibility – Immunity requirements

for components of fire and security alarm systems

ISO 3741:2010, Acoustics – Determination of sound power levels and sound energy levels of

noise sources using sound pressure – Precision methods for reverberation test rooms

ETSI EN 300 220-2:1997, Electromagnetic Compatibility and Radio Spectrum Matters (ERM)

– Short Range Devices (SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz

frequency range with power levels ranging up to 500 mW – Part 2: Supplementary parameters

not intended for conformity purposes
_____________
---------------------- Page: 13 ----------------------
– 12 – IEC 62851-5:2014 © IEC 2014
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 13

INTRODUCTION ................................................................................................................... 15

1 Domaine d'application ................................................................................................... 16

2 Références normatives .................................................................................................. 16

3 Termes, définitions et abréviations ................................................................................ 16

3.1 Termes et définitions ....................................................................................... 16

3.2 Abréviations ..................................................................................................... 17

4 Exigences générales ..................................................................................................... 17

5 Liaisons ......................................................................................................................... 17

5.1 Exigences générales ........................................................................................ 17

5.2 Exigences pour la communication vocale duplex .............................................. 18

6 Communications ............................................................................................................ 18

6.1 Exigences générales ........................................................................................ 18

6.1.1 Généralités ..................................................................................... 18

6.1.2 Exigences environnementales ........................................................ 18

6.1.3 Niveaux d’accès ............................................................................. 19

6.2 Liaisons non spécialisées ..................................
...

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