SIST EN 50098-1:2003/A1:2003

Customer premises cabling for Information Technology -- Part 1: ISDN basic access

Corrigendum to EN issued January 2003

Informationstechnische Verkabelung von Gebäudekomplexen -- Teil 1: ISDN-Basisanschluss

Câblages dans les locaux des usagers pour les technologies de l'information -- Partie 1: Accès de base RNIS

Customer premises cabling for Information Technology - Part 1: ISDN basic access

General Information

• Status: Published
• Publication Date: 31-Jan-2003
• ICS: 33.060.40 - Cabled distribution systems
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: KIN - Mains communicating systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2003
• Due Date: 01-Feb-2003
• Completion Date: 01-Feb-2003
• Ref Project: EN 50098-1:1998/A1:2002 - Customer premises cabling for Information Technology - Part 1: ISDN basic access

Relations

• Amends: SIST EN 50098-1:2003 - Customer premises cabling for Information Technology -- Part 1: ISDN basic access
• Effective Date: 21-Sep-2010

Overview

EN 50098-1:1998/A1:2002 is a CENELEC amendment (published 2002, implemented 2003) to the European standard for customer premises cabling for Information Technology - Part 1: ISDN basic access. This corrigendum updates the original EN 50098-1:1998 by specifying an alternative star configuration for dedicated ISDN basic‑access wiring and adding a normative annex on cable characteristics. The document was adopted by national committees and later appears in CLC legacy conversions.

Key topics and requirements

• Star configuration for ISDN basic access

  • Intended primarily for domestic and SOHO environments.
  • NT (network termination) must be configured in short passive bus mode.
  • Maximum number of branches: 4.
  • Cabling distance limits from NT to farthest outlet in a branch: 50 m when installed balanced cables meet Category 3 (or mixed Cat3/Cat5); 100 m when installed balanced cables meet Category 5. Extension cords must not be used to exceed these distances.
  • Maximum number of telecommunications outlets: 12; maximum number of terminals (TE): 4.
  • Spurs are discouraged; if present they shall not exceed 1 m.
  • Polarity of each wire pair must be maintained end‑to‑end.
  • 100 Ω termination resistors must be permanently connected at the star point for proper administration.
  • Branches may be hardwired or connected using hardware in accordance with EN 50173-1.

• Annex A (normative)

  • Specifies electrical characteristics and required attenuation for installed balanced 100 Ω and 120 Ω Category 3 and Category 5 cables (impedance, attenuation tables, propagation velocity, etc.).

• Editorial and bibliographic updates

  • References updated to EN 60950-1 and EN 300 012-1; removal of obsolete ETS references.

Applications

• Design and installation of ISDN basic‑access cabling in homes, small offices and SOHOs.
• Guidance for cabling contractors, telecom installers, building owners, and facility managers who need to ensure compliant ISDN wiring layouts.
• Useful for equipment vendors and integrators specifying termination, cable category, and distance limits for ISDN services.

Related standards

• EN 50173-1 (connecting hardware for structured cabling)
• EN 300 012-1 (ISDN UNI Layer 1 specification)
• EN 60950-1 (information technology equipment safety)

Keywords: EN 50098-1:1998/A1:2002, customer premises cabling, ISDN basic access, star configuration, Category 3, Category 5, telecommunications outlets, NT, TE, CENELEC.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2003
Customer premises cabling for Information Technology - Part 1: ISDN basic
access
Customer premises cabling for Information Technology -- Part 1: ISDN basic access
Informationstechnische Verkabelung von Gebäudekomplexen -- Teil 1: ISDN-
Basisanschluss
Câblages dans les locaux des usagers pour les technologies de l'information -- Partie 1:
Accès de base RNIS
Ta slovenski standard je istoveten z: EN 50098-1:1998/A1:2002
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50098-1/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2002

ICS 33.080.40; 33.080
English version
Customer premises cabling for Information Technology
Part 1: ISDN basic access
Câblages dans les locaux des usagers Informationstechnische Verkabelung
pour les technologies de l'information von Gebäudekomplexen
Partie 1: Accès de base RNIS Teil 1: ISDN-Basisanschluss

This amendment A1 modifies the European Standard EN 50098-1:1998; it 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 amendment 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 amendment 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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

© 2002 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

Foreword
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:
- 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
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.
_______________
- 3 - EN 50098-1:1998/A1:2002
Foreword
Delete in the last sentence of the last paragraph “and ETS 300 047-1 to ETS 300 047-5”, replace
“EN 60950” by “EN 60950-1” and “ETS 300012” by “EN 300 012-1”.
Subclause 5.5
nd
Replace in the 2 paragraph “(7.2.1.3 of ETS 300 012:1992)” by “(10.7.1.3. of EN 300 012-1:2000)”.
6 Configurations
6.6 Replace the existing 6.6 by the following text and renumber the figures from 6.7 onwards
accordingly:
6.6 The star configuration
The star configuration which is shown in Figure 6a is primarily intended for the domestic and small
office/home office (SO
...