1、 INTERNATIONAL STANDARD ISO/IEC 14709-21998 AMENDMENT 1 2005-07Amendment 1 Information technology Configuration of customer premises cabling (CPC) for applications Part 2: Integrated services digital network (ISDN) primary rate PRICE CODE IEC 2005 Droits de reproduction rservs Copyright - all rights
2、 reserved International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch C For price, see current catalogue Commission Electrotechnique Internationale International Ele
3、ctrotechnical Commission 2 14709-2 Amend. 1 ISO/IEC:2005(E) FOREWORD Amendment 1 to International Standard ISO/IEC 14709-2 was prepared by subcommittee 25: Interconnection of information technology equipment, of ISO/IEC joint technical committee 1: Information technology. Page 3 FOREWORD Sixth parag
4、raph Instead of: The reader is referred to IEC 60950 for general safety requirements. read: The reader is referred to the IEC 60950 series for general safety requirements. FOREWORD Seventh paragraph Instead of: ISO/IEC 14709-1:1997 read: ISO/IEC 14709-1 Delete footnotes 1) and 2) to all other refere
5、nces. Page 5 2 Normative references Update the normative references as follows: Instead of: Read: ISO/IEC 11801:1995 ISO/IEC 11801:2002 ISO/IEC 14709-1:1997 ISO/IEC 14709-1:1997 Amendment 1:2004 CISPR 22:1997 CISPR 22:2005 CISPR 24:1997 CISPR 24:1997 Amendment 1:2001 Amendment 2:2002 14709-2 Amend.
6、1 ISO/IEC:2005(E) 3 Page 6 3 Definitions Replace the text of definition 3.1 by the following: 3.1 cable unit single assembly of one or more cable elements of the same type or category NOTE 1 The cable unit may have a screen. NOTE 2 A binder group is an example of a cable unit. 3.1.10 of ISO/IEC 1180
7、1:2002 Replace the text of definition 3.2 by the following: 3.2 channel end-to-end transmission path connecting any two pieces of application-specific equipment NOTE Equipment and work area cords are included in the channel, but not the connecting hardware into the application-specific equipment. 3.
8、1.15 of ISO/IEC 11801:2002 Add a new definition 3.3 and renumber the existing definition 3.3 as 3.4. 3.3 free cable connector connector for attachment to the free end of a wire or cable IEV 581-06-12 Page 6 4.1 Abbreviations Add to abbreviations: CP consolidation point TP transition point Page 7 4.2
9、 Symbols Replace, in the last line, “Generic cabling plug” by “Free cable connector for generic cabling”. 4 14709-2 Amend. 1 ISO/IEC:2005(E) Page 8 6 Point-to-point configurations Figure 1 Replace, in the first part of Figure 1, the symbols for “Dedicated cabling socket“ and “Dedicated cabling plug”
10、 by the symbols for “Generic cabling socket” and “Free cable connector for generic cabling” respectively. Page 9 Second paragraph, first dash Replace via a plug at the end of a cord connected to the TE; by via a free cable connector at the end of a cord connected to the TE; Page 10 7.3 Connectors Re
11、place the existing text by the following: The socket used to connect the terminal equipment to the cabling shall be in accordance with IEC 60603-7. Delete the word “plug” in the NOTE at the end of the subclause. 8.1 General Replace the existing text of the third paragraph by the following: The coppe
12、r cable types supported by ISO/IEC 11801:2002 comprise 100 and 120 balanced cables. The first edition of ISO/IEC 11801:1995 specified 100 , 120 and 150 balanced cables. Page 11 Figure 2 Replace “TP” by “CP” in the dotted circle of Figure 2. Key to Figure 2 Add the item and footnote CP Consolidation
13、point 1)1)ISO/IEC 11801:1995 specified an optional TP, while ISO/IEC 11801:2002 specifies an optional CP. 14709-2 Amend. 1 ISO/IEC:2005(E) 5 8.2 Connection of ISDN primary access to generic cabling Replace the first and second paragraphs by the following: Figure 3a) shows a TE plugged directly into
14、the generic cabling. Figure 3b) shows the use of a cord with different free cable connectors on each end to make the connection. Figure 3c) shows the use of a generic cabling adapter to provide ISDN primary access. Such an adapter consists of a free cable connector which matches the telecommunications outlet of the generic cabling; an optional cord conforming to 8.3; an optional socket or free cable connector conforming to 7.3; an optional impedance matching device. ISBN 2-8318-8151-X -:HSMINB=VZVZ: ICS 35.200; 33.080 Typeset and printed by the IEC Central Office GENEVA, SWITZERLAND
