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ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

Наказом Міністерства економічного розвитку і торгівлі України
від 30.12.2014 № 1494

CLC/TS 50136-7:2004

en: Alarm systems - Alarm transmission systems and equipment Part 7:
Application guidelines System Components

прийнято як національний стандарт
методом підтвердження за позначенням

ДСТУ CLC/TS 50136-7:2014

uk: Системи тривожної сигналізації. Системи передавання тривожних
сповіщень та устатковання. Частина 7. Правила застосування
(CLC/TS 50136-7:2004, IDT)

З наданням чинності від 2016-01-01

CLC/TS 50136-7

January 2004

TECHNICAL SPECIFICATION

SPECIFICATION TECHNIQUE

TECHNISCHE SPEZIFIKATION

ICS 13.320

English version

Alarm systems -
Alarm transmission systems and equipment
Part 7: Application guidelines

Systemes d'alarme - Systemes et equipements de transmission d'alarme Partie 7: Guide d'application

Alarmanlagen -

Alarmubertragungsanlagen und -einrichtungen

Teil 7: Anwendungsregel

n

This Technical Specification was approved by CENELEC on 2003-05-31.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC

European Committee for Electrotechnical Standardization
Comite Europeen de Normalisation Electrotechnique
Europaisches Komitee fur Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, В -1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. CLC/TS 50136-7:2004

EForeword

This Technical Specification was prepared by the Technical Committee CENELEC TC79, Alarm systems.

The text of the draft was submitted to the formal vote and was approved by CENELEC as CLC/TS 50136-7 on 2003-05-31.

The following date was fixed:

- latest date by which the existence of the CLC/TS

has to be announced at national level (doa) 2004-04-08

EN 50136 will consist of the following parts, under the general title “Alarm systems - Alarm transmission systems and equipment”:

Contents

Page

Introduction 4

1. Scope 4

2. Normative references 4

3. Definitions 5

4. alarm transmission systems 5

   1. General and technology specific requirement 5

   2. Purpose of an alarm transmission system 5

   3. Components of an alarm transmission system (Annex A) 6

   4. Performance of an alarm transmission system 6

      1. Transmission time 6

      2. Reporting time 6

      3. Availability 7

         1. Evaluation of availability 7

         2. Improvement of availability 7

      4. Signalling security 7

      5. Throughput 8

   5. Miscellaneous 8

      1. Shared transmission networks 8

      2. Interfacing devices to the transmission network 8

      3. Additional signalling 8

      4. Secondary alarm receiving centres 9.

      5. Avoiding the loss of message 9

      6. Dead Man feature 9

5. Application of alarm transmission systems 9

   1. Intruder and hold-up alarm 9

   2. Fire alarms 10

   3. Social alarms 10

   4. Access control alarms 11

   5. CCTV alarms 11

   6. Other applications 11

   7. Multiple applications 11

6. Installation and connection of alarm transmission equipment 12

   1. Supervised premises transceiver 12

   2. Receiving centre transceiver 12

Annex A (normative) Tables from EN 50136-1-1 13

Annex В (normative) Figure 1 from EN 50136-1-1 14Introduction

To come to a common understanding of the alarm transmission standards documents there is a need for application guidelines to support other TC 79 WG, other standardisation bodies, insurance companies and customers to require an appropriate performance of the alarm transmission system for a specific application.

Application knowledge and needs are not always available by the alarm transmission experts and therefore guidelines for alarm transmission should assist other experts to understand the alarm transmission standards and the performance of an alarm transmission system. This should help to make an appropriate specification based on the performance tables of the general standard, also including the economical aspects and consequences.

The alarm transmission standards applies to different applications (e.g. intrusion, fire, access control, CCTV,...). Therefore, this guideline should be read in conjunction with the standards relating to these applications when appropriate.

Several alarm transmission systems may be used by the providers of alarm transmission services, which implies that the level of services may vary, depending on the performance of each alarm transmission system.

1. Scope

This Technical Specification will give to the readers of the alarm transmission system standards appropriate guidance to define alarm transmission and annunciation equipment systems in line with the requirements of their specific applications.

2. Normative references

This Technical Specification incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this application guideline only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to apply (including

P

EN 50136-2-4

CLC/TS 50136-4

art 2-4: Requirements for equipment used in systems with voice communicators using the public switched telephone network

Alarm systems - Alarm transmission systems and equipment - Part 4: Annunciation equipment used in alarm receiving centres

3. Definitions

For the purposes of this Technical Specification, the definitions in EN 50136-1-1 apply.

4. Alarm transmission systems

   1. General and technology specific requirement

Alarm transmission systems are a part of a total security solution. The selection of requirements for the alarm transmission system depends on the requirements of the specific application.

The alarm transmission standards parts EN 50136-1-1 and EN 50136-2-1 are the main documents. They provide requirements for all types of systems and equipment commonly in use.

For some specific technologies there are standards providing detailed additional requirements or interpretations or explanations for the application of the general requirements.

For technologies not covered by a specific standard document, the general documents EN 50136-1-1 and EN 50136-2-1 should apply.

The purpose of an alarm is always to initiate some kind of response, locally or remotely. The function of the alarm is in some cases twofold, to prevent something from occurring, e.g. burglary, and to respond when something occurs. The most common set-up is with an alarm equipment including detection of the expected incidents, an alarm transmission system, a monitoring centre and a response force, police, guards, fire brigade, medical assistance, etc.

The characteristics of each of these parts of the total preventive and responsive system should correspond to the nature of the threat, for which it provides protection:

• for a burglar alarm, tamper and manipulation protection are important characteristics: the higher the values or risks, the more important is also the availability of the system;

• for a fire alarm system the most important characteristics may be transmission time and availability, of course related to the values at risk).

Sufficient information should be provided through the alarm transmission system to enable appropriate intervention.

Examples of useful information are

• fault,

• set/unset (arm/disarm),

• alarm including type, location and also detector or zone,

The alarm transmission system has several parts. The supervised premises transceiver is the part which is located at the premises and which receives the alarm status signal(s) from the local alarm system. It transmits the corresponding alarm through a transmission network (which is, in most cases, a network provided by a telephone network operator), to a receiving centre transceiver located in a remote centre or in an alarm receiving centre.

The message corresponding to the alarm is then passed to the annunciation equipment, which secures its presentation. The annunciation equipment can be either located in the same alarm receiving centre as the receiving centre transceiver or in a different one.

The performance of the alarm transmission system is evaluated from the criterias of transmission time of alarm messages, the reporting time of faults, the signalling security and the availability including the transmission network.

The transmission network should be selected according to the required performance. As the transmission network performance can not be influenced, prior to selecting the alarm transmission system performance, the inherent performance of the transmission network should be assessed with the network operator.

For alarm transmission systems which are not automatically monitored, the verification of performance should be carried out manually, following a documented procedure. This procedure should use a check-list which should take into account every component of the alarm transmission system which may influence its performance.

The transmission time (see Table 1 of Annex B) is the time it takes to convey the alarm message, from when the alarm is signalled to the supervised premises transceiver to the receiving centre transceiver.

As the transmission time may vary from one transmission to another, due to the transmission network (availability of lines, type and number of exchanges,...), this value is considered statistically. This is the reason to specify the arithmetic mean and the upper 95 % of this value.

When designing a system to a certain target in this table it is important to verify that the inherent performance of the network, allows to meet the selected class from Table 1 (see Annex B). In addition, the worse case value of transmission time shall be considered in order to verify that this value is under the limits of the application. The highest classes providing a short transmission time are more relevant if the corresponding response time is immediate or short.

The maximum time (see Table 2 in Annex B) is an absolute limit to be specified separately. Each occasion when the maximum time is exceeded should be considered as a fault during the verification of performance. Each fault affects the availability criteria of the alarm transmission system.

The reporting time (given by Table 3 in Annex B) is the period from the time a fault occurs in the alarm transmission system until a fault message is reported to the receiving centre transceiver. It is used to prove that the alarm transmission system is operational as it basically gives the physical availability of the alarm transmission system. The fault reporting time relates to transmission time requirements, availibility and manipulation protection.

There may be different ways to evaluate the reporting time in order to establish a classification. The selected method should be assed in a clear written procedure.

Some examples of this evaluation are

• measuring from the time the last successful message was received by the alarm receiving centre (at the receiving centre transceiver or at the annunciation equipment),

• monitoring continually by using test messages.

The availability of the alarm transmission system is defined by a calculation method in 7.5.3 of EN 50136-1-1.

It represents the period of time, measured on a yearly or monthly basis, during which the alarm transmission system is capable of communicating; this evaluation includes the probability of occurrence of a fault and the time it takes to repair it.

The corresponding classification, resulting from the calculation method is expressed in percentage.

The evaluation of the availability depends on the alarm transmission system equipment and on the transmission networks which are going to be selected. The method of evaluation should be clearly explained in a written procedure. In addition, these networks should be adequally chosen, taking into account the following considerations:

• attention should be paid when using a cable network, to the quality and vulnerability of the local links;

• consideration should be given to the consistency of the transmission network with the availability classification which is required by the alarm company (e.g. switched telephone network, data transmission network, leased lines,...).

The availability may be increased by using secondary paths or redundant equipment. This may be another type of alarm transmission system or another system or line of the same type. A special combination which improves the availability substantially may be dialler complemented by a radio or mobile telephone system.

With this possibility, when totally independent alarm transmission systems are used with automatic switching features, the evaluation can be made as:

Availability = 1- (1-AV ats1) x (1-AV ats2)

where AV ats 1 availability of A.T.S. 1

AV ats 2: availability of A.T.S. 2

This would result in increasing the overall availability of the combined alarm transmission system.

Should parts of these different alarm transmission systems be common, this should be identified, as it would proportionally reduce the overall improvement of availability.

To achieve protection against substitution and to provide information on the integrity of the transmission, additional methods are required as defined in the chapter on signalling security in the EN 50136-1-1.Consistency between levels should be considered when selecting the substitution security level and the information security level, (e.g. combination of SO and ІЗ, where there is no substitution security and a guarantee of high integrity of the information, may not be appropriate).

The throughput requirement of an alarm transmission system is given in EN 50136-1-1 subclause 6.1.2. When evaluating the throughput of an alarm transmission system, possible increase of the number of alarm messages over a short period of time should be considered.

Simultaneous transmission of mains failure messages through an alarm transmission system, generated by an electricity black-out within a large area (e.g. a city) may affect the alarm transmission system performance. In that case, a way to maintain the throughput rate would be to assign specific receiving centre transceiver to each application (e.g. fire, intrusion,...) or to multiply the number of channels.

Another way to avoid extreme high load is for example to require back up batteries for all alarm transmission equipment and to delay the power failure alarm with a variable time to reduce the number of simultaneous alarm messages, as per EN 50131-1, subclause 8.6.1.

4.5 Miscellaneous

Alarm transmission systems can, due to cost reasons, share the transmission network with other applications (e.g. on ordinary telephone lines, voice communications, or on cable TV systems, video, or on mains supply lines, electricity,...). In that case, the alarm is transmitted on the same media as some other information.

Therefore, the combined transmission of information through a shared transmission network should be taken into account when evaluating the criterias of performance (transmission time, reporting time, availability) of the alarm transmission system. The methods of evaluation should be stated in a written procedure. Particular attention should be paid to the characteristics of the network provided by the network operator.

For example:

all interventions made for the other applications, which could affect the performance of the alarm transmission system, should also be considered in these evaluations (e.g. maintenance, testing, installation,...);

the resources used by the other applications

Consideration should be given when connecting the alarm transmission system by means of interfacing devices to the transmission network (e.g. PABX, X25 pad,...), as those, may affect the performance of the alarm transmission systems.

In some alarm transmission systems additional signalling is provided for the alarm application (e.g. status reports, downloading functions, alarm history transmission or alarm verification such as listen-in, challenging, video, two way speech communication).

In that case, the performance of the alarm transmission system should be maintained (e.g. by providing a sufficient processing capacity, the relevant number of ports or by assigning priorities to alarm messages).

Alarms may be transmitted to one or several alarm receiving centres for the following purposes:

• to initiate several types of intervention;

• to increase the probability to get the transmitted message through in a noisy signalling environment;

• to prevent alarms from being missed because of faulty receivers or heavy alarm signal traffic to an alarm receiving centre.

In the case the same information is transmitted simultaneously by a supervised premises transceiver to different alarm receiving centres, redundancy of the transmission should be checked in order to avoid duplication of the response.