BS-EN-50098-1-1999.pdf

BRITISH STANDARD BS EN 50098-1:1999 Incorporating Amendment No. 1 Customer premises cabling for Information Technology Part 1: ISDN basic access The European Standard EN 50098-1:1998, with the incorporation of amendment A1:2002, has the status of a British Standard ICS 33.080.40; 33.080 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50098-1:1999 This British Standard, having been prepared under the direction of the DISC Board, was published under the authority of the Standards Committee and comes into effect on 15 April 1999 © BSI 16 June 2003 ISBN 0 580 32376 5 National foreword This British Standard is the English language version of EN 50098-1:1998, including amendment A1:2002 and Corrigendum January 2003. It supersedes BS EN 50098-1:1994 which is withdrawn. CENELEC Corrigendum January 2003 replaces references to EN 50173 by EN 50173-1 throughout the text of this British Standard. The corrigendum also changes a reference in the scope of the standard. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated by !“. The UK participation in its preparation was entrusted to Technical Committee TCT/7, Installation requirements, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 25 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments 1434216 June 2003See national foreword Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 50098-1 November 1998 + A1 November 2002 ICS 33.080.40; 33.080Supersedes EN 50098-1:1994 Incorporating corrigendum January 2003 Descriptors: cabling topology, cabling qualification, design requirements, ISDN basic access, ISDN S-bus, requirements for cabling components English version Customer premises cabling for Information Technology Part 1: ISDN basic access (includes amendment A1:2002) Cablages dans les locaux des usagers pour les technologies de linformation Partie 1: Accès de base RNIS (inclut lamendement A1:2002) Informationstechnische Verkabelung von Gebäudekomplexen Teil 1: ISDN-Basisanschluß (enthält Änderung A1:2002) This European Standard was approved by CENELEC on 1998-10-01. Amendment A1 was approved by CENELEC on 2002-07-02. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels © 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50098-1:1998 + A1:2002 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 © BSI 16 June 2003 2 Foreword This second edition of the European Standard has been prepared by CENELEC/TC 215, Electrotechnical aspects of telecommunication equipment. It has been developed with the cooperation of CENELEC/SC 46XC, Multicore, multipair and quad data communication cables, and ETSI/TM3, Architecture, functional requirements and interfaces of transmission networks, under the framework of the Mandates M/212 on “Telecommunication cables and cabling systems” and M/239 on “Air traffic management equipment and systems”. The text of this European Standard was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50098-1 on 1998-10-01. This European Standard supersedes EN 50098-1:1994. The following dates were fixed: This standard is the first of a series of European Standards for customer premises cabling. EN 50098-1 (this standard) covers customer premises cabling for connection of basic access ISDN equipment. EN 50098-2 covers customer premises cabling for connection of primary access ISDN equipment. Other subjects that are covered by TC 215 are, e.g.: installation aspects of cabling systems; generic cabling systems. The requirements in this standard have been derived from ETS 300 012-1, EN 28877, EN 60603-7-1 and ITU-T1) Recommendation I.430 (Blue Book). The reader is referred to EN 60950-1 for general safety requirements, and to EN 55022 for EMC requirements (see Bibliography). Foreword to amendment A1 This amendment to the European Standard EN 50098-1:1998 was prepared by CENELEC TC 215, Electrotechnical aspects of telecommunication equipment, based upon a proposal of the ETSI Project Team Digital Terminals and Access, and with the co-operation of ETSI TM6, Access transmission systems on metallic cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 50098-1:1998 on 2002-07-02. The following dates were fixed: This amendment replaces 6.6 of EN 50098-1:1998 by a generalized specification of the star configuration as another configuration option for dedicated ISDN wiring. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-10-01 latest date by which national standards conflicting with the EN have to be withdrawn (dow) 1999-10-01 1)International Telecommunication Union Telecommunications Standardization Sector (formerly CCITT). latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-07-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2003-07-01 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 © BSI 16 June 2003 3 Contents Page Foreword2 Introduction5 1Scope5 2Normative references5 3Definitions5 4Abbreviations and symbols6 4.1Abbreviations6 4.2Symbols7 5Design requirements7 5.1General7 5.2Insertion loss7 5.3Longitudinal conversion loss8 5.4Round trip delay8 5.5Power feeding8 5.6Electromagnetic environment9 5.7Spurs9 5.8Near-end crosstalk loss (NEXT)9 6Configurations10 6.1General10 6.2The point-to-point configuration10 6.3The short passive bus configuration10 6.4The extended passive bus configuration12 6.5The Y-configuration13 6.6The star configuration14 6.7Implementation over generic cabling systems15 7Minimum requirements for components19 7.1General19 7.2Cables19 7.3Terminal cords19 7.4Terminating resistors19 7.5Telecommunications outlets and joint boxes19 7.6Cross-connect products/patch cords20 8Cabling qualification20 8.1General20 8.2Spurs20 8.3Cabling integrity20 8.4d.c. loop resistance21 8.5d.c. resistance unbalance21 8.6Insulation resistance21 8.7Insertion loss21 8.8Round trip delay21 8.9Characteristic impedance21 8.10 Near end crosstalk loss (NEXT)21 Page 8.11 Impulsive noise21 8.12 Bit error rates21 8.13 Longitudinal conversion loss21 Annex A (normative) Characteristics of Category 3 and Category 5 cables22 Bibliography25 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 © BSI 16 June 2003 5 Introduction This European Standard is intended for use by those designing, planning or procuring cabling for ISDN basic access within a customers premises. The configurations in this standard are designed to be effective when either implemented with cabling having the recommended characteristics, or implemented with the components specified in Clause 7. In addition, guidance is given for the use of generic cabling according to EN 50173-1. 1 Scope This European Standard defines the requirements for the design and configuration of customer premises cabling for the connection of basic access ISDN equipment. It defines: design requirements for ISDN basic access with point-to-point and point-to-multipoint cabling configurations; minimum cabling requirements for the installation of new cabling; criteria for the use of generic cabling; criteria for the use of existing cabling. The standard applies to the customer premises cabling. It describes the cabling requirements, needed to transmit ISDN basic access signals as defined by ITU-T Recommendation I.430. The requirements placed on the customer premises cabling are solely those necessary to enable terminal equipment conforming to ETS 300 012-1 to operate into the Network Termination (NT) via configurations defined in this standard. 2 Normative references This European Standard 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 European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 28877, Information processing systems Interface connector and contact assignments for ISDN basic access interface, located at reference points S and T. (ISO/IEC 8877:1992) EN 50173-1, Information technology Generic cabling systems Part 1: General requirements and office areas. EN 60603-7, Connectors for frequencies below 3 MHz for use with printed boards Part 7: Detail specification for connectors, 8-way, including fixed and free connectors with common mating features. (IEC 60603-7:1996) ITU-T Rec I.430 (Blue Book), ISDN user-network interface Layer 1 recommendations. 3 Definitions The meaning of the term round trip delay can be found in ITU-T Recommendation I.430 (Blue Book), A.2. In clauses referring to generic cabling the definitions of EN 50173-1 apply. Furthermore, for the purposes of this standard, the following definitions apply. 3.1 cabling the assembly of all cables, connections, patch panels and other passive components which comprise the telecommunications infrastructure 3.2 network termination the functional group on the network side of a user-network interface NOTEA network termination always comprises a transmission part NT1 and optionally a switching part NT2. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 6© BSI 16 June 2003 3.3 power feeding the function which provides for the capability to transfer power across the interface of the NT 3.4 terminal equipment the functional group on the user side of a user-network interface NOTE Terminal equipment includes terminal(s), terminal adapter(s) and, if any, NT2 functional group. 4 Abbreviations and symbols 4.1 Abbreviations NOTE The meanings of the abbreviations S, S0 and T conform to ITU-T Recommendation I.430. BD building distributor CD campus distributor FD floor distributor GC generic cabling ISDN integrated services digital network NEXT near-end crosstalk loss NT1 network termination 1 NT2 network termination 2 S S reference point S0 S0 interface T T reference point TE terminal equipment TR terminating resistor Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 © BSI 16 June 2003 7 4.2 Symbols 5 Design requirements 5.1 General Signals passing between the NT and TE(s) for the various configurations are subject to attenuation, delay and distortion. Cabling components (including extension cords, adapters, cross-connect components, telecommunications outlets, junction boxes, cables, spurs, etc.) and connected terminals all contribute to these effects. The design requirements for the cabling are dependent on the configuration chosen. 5.2 Insertion loss The insertion loss is measured from the NT to the TR at 96 kHz with 100 source and load impedances. The maximum insertion loss for each configuration is shown in Table 1. Cable Spur/tap with a junction to a cable which is the terminated bus Network Termination Terminating Resistors Telecommunications outlet according to EN 60603-7 Plug according to EN 60603-7 Telecommunications outlet according to EN 50173-1 Plug according to EN 50173-1 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:21:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50098-1:1998 8© BSI 16 June 2003 Table 1 Maximum insertion loss for each configuration 5.3 Longitudinal conversion loss The longitudinal conversion loss of the cabling shall be equal to, or greater than, 43 dB when measured at 96 kHz. 5.4 Round trip delay The round trip delay introduced by the cabling shall not exceed: a) 2,0 µs for the total cabling of both the short passive bus at 96 kHz and the Y-configuration; b) 0,5 µs