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1、IS0 2330 89 m Y853903 0309844 7 m - .- I N TE R NAT I O N AL STANDARD IS0 2110 Third edition 1989-1 0-01 AMENDMENT 1 1991-09-15 Information technology - Data communication - 25-pole DTE/DCE interface connector and contact number assignments AMENDMENT 1 : Interface connector and contact assignments f
2、or a DTE/DCE interface for data signalling rates above 20 O00 bit/s Technologies de Pin formation - Communication de donnes - Connecteur dinterface ETTD/ETCD 25ples et affectation des numros de contacts AMENDEMENT I: Connecteur dinterface et affectation des numros de contacts linterface ETTD/ETCD po
3、ur un dbit binaire suprieur 20 kbit/s Reference number IS0 2110 : 19WAmd.l : 1991 (E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking pe
4、rmitted without license from IHS -,-,- IS0 2110 : 1989/Amd.l : 1991 (E) Foreword IS0 (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardiz- ation. National bodies that are members of IS0 or IE
5、C participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other international organizations, gove
6、rnmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the field of information technology, IS0 and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national b
7、odies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Amendment 1 to International Standard IS0 2110 : 1989 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology. Annex B of this Amendment is for
8、 information only. O ISO/IEC 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Switzerland ISOAEC Copyright Offi
9、ce o Case postale 56 o CH-1211 Genve 20 o Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS
10、 -,-,- IS0 2110 89 m 4851903 O309846 O m IS0 2110 : 1989/Amd.l : 1991 (E) Information technology - Data communication - 25-pole DTE/DCE interface connector and contact number assignments AMENDMENT 1 : Interface connector and contact assignments for a DTE/DCE interface for data signalling rates above
11、 20 O00 bit/s Page I Clause 1 Table 1 Add the following: “In the case where operation exceeding 20 O00 bitls is required, the electrical characteristics shall be in accordance with CCIlT Recommendation V. 10 and CCITT Recommen- dation V. 11 ,I Pages 4 and 5 Add the following column and add the follo
12、wing notes: Operation above 20 O00 bit/sl3) 1 1) Clause 2 Insert the following after “CCITT Recommendation S.16 : 1989“: “CCITT Recommendation V. 1 O : 1988, Electrical characteristics for unbalanced double-circuit interchange circuits for general use with integrated circuit equipment in the field o
13、f data com- munications. CCITT Recommendation V. 11 : 1988, Electrical characteristics for balanced double-circuit interchange circuits for general use with integrated circuit equipment in the field of data com- munications. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 103-A 104-A
14、 105-A/133-A 106-A 10715) 1 02-A 109-A 115-8 109-B 113-8 114-8 106-8 103-8 114-A 104-8 1 15-A 141 15) 10815) 14015) 12515) 105-8/ 133-8 102-B 1 13-A 1 42 v. 11 /v. 101J) Electrical characteristics 1 13 Reference to the appropriate V. Series Recommendation(s) to be added when CCITT specifies the use
15、of these electrical characteristics in the said Recommendations. 14 Equipment designers shall take note of the fact that the predominant use of this connector is in devices using electrical characteristics confor- ming to CCITT Recommendation V.28. Therefore, equipment using V. ION. 11 electrical ch
16、aracteristics must be designed so that it can withstand the higher voltages normally associated with V.28 electrical characteristics because of the possibility of incorrect interconnection with these devices. 15 V. 10 electrical characteristics. I 1 Copyright International Organization for Standardi
17、zation Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2310 89 4853903 0309847 2 Circuit number 133 IS0 2110 : 1989/Amd.l : 1991 (E) Description Rea
18、dy for receiving Page 6 Table 2 Add the following: Page 14 Annex B (new) B.2 CCITT Recommendation V.35 Although CCITT Recommendation V.35 is no longer recom- mended for use by CCITT, interoperation between IS0 21 IO, column M, and this equipment is possible. The use of an active circuit (similar to
19、that shown in figure 8.1) is recommended for the case where a V. 11 driver is connected to a V.35 unbalanced (V. 28) receiver. Table B.l illustrates the contact assignments for IS0 2593 (associated with CCIlT Recommendation V.35) and the cor- responding contacts for IS0 2110, column M operation, spe
20、ci- fying the type of interconnecting device to be used. Table B.l - .Interconnection of IS0 2110, corumn M, with IS0 4902 and IS0 2593 Add the following: Annex B (informative) Interoperation with adapters B.l CCITT Recommendation V.36 and CC177 Recommendation V.37 Interoperation is possible between
21、 equipment using this Inter- national Standard, table 1, column M, and existing equipment designed to support wideband modems as specified in CCITT Recommendation V.36 and CCITT Recommendation V.37. Table B.l illustrates the contact assignments for IS0 4902 with a cross reference to the correspondin
22、g CCITT Recommendation V.24 circuit assignments for the above column. It should be noted that Circuits 107 and 108 have an “A“ and “B“ assign- ment (use CCITT V. 11 electrical characteristics) in IS0 4902, whereas they have a single assignment (use CCITT V. 10 elec- trical characteristics) in IS0 21
23、 10, column M. Therefore, they require the use of an active interconnect circuit, similar to that shown in figure B.l, on circuits where a V.ll driver is being used with a V. 10 receiver. IS0 4902, IS0 2593, V.36lV.37 I I I Circuit I Contact I Contact I Contact 103-A 104-A 105-A 106-A 107 102-A 109-
24、A 115-8 109-B 113-8 114-8 106-B 103-8 114-A 104-8 11 5-A 141 105-8 108 140 125 102-8 113-A 142 21 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 4 6 7 9 11, 291) 19 13 26 31 35 23 27 22 5 24 8 10 25 12, 301) 14 15 20 17 18 1) May require active interconnect circuit. I 2) See table 1
25、, note 1. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,-,- - IS0 2110 89 H 485193 0109848 4 H
26、IS0 2110 : 1989/Amd.i : 1991 - I - Fallsaf e V.28 or V.10 retelver 3 - - “- V.ll genprator Figure B.l - Active interconnect circuit 3 o Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19
27、/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2310 89 M 4853903 0309849 b W IS0 2110 : 1989/Amd.l : 1991 (E) UDC 681.327.8 : 621.316.541 Descriptors: data processing, data transmission, network interconnection, data communication equipment, connecting e
28、quipment, electric connectors, multi-contact connectors, connector pins, specifications, dimensions, layout, numbering, Price based on 3 pages o Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resa
29、le, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2110 87 4851303 0071780 3 INTER NATIONAL STANDARD IS0 2110 Third edition 1989-1 0-01 Information technology - Data communication - 25-pole DTE/DCE interface connector and contact num ber assignments
30、 Technologies de Iinforrnation - Communication de donnes - Connecteur dinterface ETTD/ETCD 25 ples et affectation des numros de contact Reference number IS0 2110 : 1989 (E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standar
31、ds 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,-,- _ IS0 2110 87 m LI851903 O O 1 7 B 1 5 m IS0 2110 : 1989 (E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards
32、 bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organiza
33、tions, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical cornmittees are ci
34、rculated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting. International Standard IS0 2110 was prepared by Technical Committee ISO/
35、TC 97, Information processing systems. This third edition cancels and replaces the second edition (IS0 2110 : 1980), of which it constitutes a minor revision: certain terms have been aligned with the terms and definitions used by IEC. Annex A of this International Standard is for information only. o
36、 IS0 1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 o CH-
37、1211 Genve 20 o Switzerland Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:01:54 MDTNo reproduction or networking permitted without license from IHS -,
38、-,- INTERNATIONAL STANDARD IS0 2110 : 1989 (E) Information technology - Data communication - 25-pole DTE/DCE interface connector and contact number assignments 1 Scope This International Standard specifies the 25-pole connector and the assignment of contact numbers at the interface between data term
39、inal equipment (DTE) and data circuit-terminating equipment (DCE) or parallel automatic calling equipment (ACE). It is applicable to voice band modems, public data net- work (PDN) facilities, telegraph signal converters, and automatic calling equipment where CCITT Recommendations V.24 and V.28 are a
40、pplicable. In the case of the PDN attachment through the X.20 interface, the functions of the interchange circuits are in accordance with CCITT Recommendation X.24. In the case of the V.20 type outstation interface, the electrical characteristics are in accordance with CCIlT Recommendation V.31 or V
41、.31 bis. International Standard ISO/IEC 21 10 additionally provides the dimensions of the connector housing, as well as the recom- mended means of providing a locking device (latching block) and connector shielding. 2 Normative references The following standards contain provisions which, through ref
42、erence in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encour- aged to investigate the possibility of applying
43、the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Stan- dards. IS0 261 : 1973, IS0 general purpose metric screw threads - General plan. IS0 8480 : 1987, Information processing - Data communi- cation - DTE/DCE interfa
44、ce back-up control operation using the 25-pole connector. CCITT Recommendation S.16 : 1989, Connection to the telex network of an automatic terminal using a V.24 ll DCE/DTE interface. CCIlT Recommendation V.19 : 1989, Modems for parallel data transmission using telephone signalling frequencies. CCIl
45、T Recommendation V.20 : 1989, Parallel data transmission modems standardized for universal use in the general switched telephone network. CCIlT Recommendation V.21 : 1989, 300 bits per second duplex modem standardized for use in the general switched telephone network. CCITT Recommendation V.22 : 198
46、9, 1200 bits per second duplex modem standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits. CCIlT Recommendation V.22 bis : 1989,2 40 bits per second duplex modem using the frequency division technique standardized for use on the g
47、eneral switched telephone net- work and on point-to-point 2-wire leased telephone-type circuits. CCITT Recommendation V.23 : 1989, 600/1200-baud modem standardized for use in the general switched telephone net- work. CCITT Recommendation V.24 : 1989, List of definitions for interchange circuits betw
48、een data terminal equipment and data circuit-terminating equipment. CCITT Recommendation V.25 : 1989. Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network including disabling of echo control devices for both manually and automatically established calls. CCIlT Recommendation V.25 bis : 1989, Automatic calling and/or answering equipment on the general switched tele- phone network (GSTNI using the 100-series interchange cir- cuits. CCITT Recommendatio