1、TECHNICAL TBR 2 January 1997 Source: ETSI TC-TE _ Reference: DTBWE-005002 ICs: 33.020, 33.040.40 Key words: PDN, testing, type approval, X.25 Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDNs) for CCIlT Recommendation X.25 interfaces
2、 at data signalling rates up to 1 920 kbit/s utilizing interfaces derived from CCIlT Recommendations X.21 and X.21 bis ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipol
3、is - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariatQetsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 i6 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to repr
4、oduction in all media. Q European Telecommunications Standards Institute 1997. All rights reserved. Page 2 TBR 2: January 1997 - - STD-ETSI TBR 2-ENGL 1797 m 3400855 0373350 200 m Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical o
5、r otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. STD-ETSI TBR 2-ENGL 1777 3i00855 0171351 Li7 Page 3 TBR 2: January 1997 Contents Foreword . 7 Introduction 7 1 2 3 4 5 6 Scope 9 No
6、rmative references 10 Definitions and abbreviations 11 3.1 Definitions 11 3.2 Abbreviations . 11 Modes of operation and signalling rates 11 Types of operation . 11 Data signalling rate 11 4.1 4.2 Safety and EMC requirements 11 5.2 EMC requirements . 11 5.1 Safety requirements . 11 6.2.3 6.2.4 6.3.2
7、Electrical. mechanical. and access control protocol requirements . 12 6.1 General characteristics 12 6.1.1 Generator presentations 12 6.1.1.1 Balanced generator . 12 6.1.1.2 Unbalanced generator . 12 6.1.2 Receiver presentations 12 6.1.2.1 Balanced receiver 12 6.1.2.2 Unbalanced receiver 12 Connecto
8、r characteristics and contact number assignments 12 Attachment to a DCE interface presented on a 25-pole connector 12 6.2.1.1 Connector 12 6.2.1.2 Contact number assignments 12 Attachment to a DCE interface presented on a 26-pole connector . 13 6.2.2.1 Connector 13 6.2.2.2 Contact number assignments
9、 13 Attachment to a DCE interface presented on a 37-pole connector . 13 6.2.3.1 Connector 13 6.2.3.2 Contact number assignments 13 Attachment to a DCE interface presented on a 34-pole connector . 13 6.2.4.1 Connector 13 6.2.4.2 Contact number assignments 14 Attachment to a DCE interface presented on
10、 a 1 5-pole connector . 14 6.2.5.1 Connector 14 6.2.5.2 Contact number assignments 14 6.3 Electrical requirements 14 Requirements for attachment to CCIT Recommendation V.l O interchange circuits . 15 6.3.1.1 Generator open circuit output voltage 15 6.3.1.2 Generator terminated output voltage . 15 6.
11、3.1.3 6.3.1.4 Generator polarities . 16 Requirements for attachment to CCIlT Recommendation V.11 interchange circuits . 17 6.3.2.1 Generator open circuit output voltage 17 6.3.2.2 Generator terminated output voltage . 17 6.3.2.3 Generator output rise time . 18 6.3.2.4 Generator polarities . 19 6.2 6
12、.2.1 6.2.2 6.2.5 6.3.1 Generator output rise time . 16 Page 4 TBR 2: January 1997 STD-ETSI TBR 2-ENGL 1777 W 31r00855 0171352 083 = 6.3.3 Requirements for attachment to CCITT V.28 interchange circuits . 19 6.3.3.1 Generator open circuit output voltage . 20 6.3.3.2 Generator terminated output voltage
13、 20 6.3.3.3 Generator output signal transition time . 21 6.3.3.4 Generator polarities . 22 6.3.3.5 Receiver maximum effective shunt capacitance . 22 Requirements for attachment to CCITT Recommendation V.35 interchange circuits . 22 6.3.4.1 Generator open circuit output voltage . 22 6.3.4.2 Generator
14、 terminated output voltage 23 6.3.4.3 Generator output rise time 23 6.3.4.4 Generator polarities . 24 X.25 link layer (layer 2) requirements 24 X.25 packet layer (layer 3) requirements 24 6.3.4 6.4 6.5 7 TBR Test Specification . 25 7.1 Conditions of test . 25 7.1.1 Environment for tests 25 7.1.2 Pow
15、er supply limitations . 25 7.1.3 Test condition . 25 7.1.4 Test point 25 7.1.5 Bit patterns 25 7.1.6 7.1.7 7.1.8 7.1.9 Signal element timing . 25 Data signalling rates . 25 Interchange circuits presentation 26 Physical layer tests . 26 Verification of the electrical characteristics . 26 Identically
16、implemented circuits 26 Fixed state generators 26 Test descriptions for connector characteristics and contact number assignments 26 7.2.1 25-pole connector . 26 7.2.1.1 Connector characteristics . 26 7.2.1.2 Contact number assignments . 26 7.2.2 26-pole connector . 26 7.2.2.1 Connector characteristi
17、cs . 26 7.2.2.2 Contact number assignments . 27 7.2.2.2.1 7.1.9.1 7.1.9.2 7.1.9.3 7.2 Connection to a DCE presenting CCITT Recommendation V.10 or V.11 electrical characteristics . 27 Connection to a DCE presenting CCIlT Recommendation V.28 electrical characteristics . 27 7.2.3.1 Connector characteri
18、stics . 27 7.2.3.2 Contact number assignments . 27 7.2.4 34-pole connector . 27 7.2.4.1 Connector characteristics . 27 7.2.4.2 Contact number assignments . 27 7.2.5 15-pole connector . 28 7.2.5.1 Connector Characteristics . 28 7.2.5.2 Contact number assignments . 28 Test descriptions for attachment
19、to CCITT V.10 interchange circuits . 28 7.3.1 Generator characteristics . 28 Generator open circuit output voltage . 28 Generator terminated output voltage 29 Generator output rise time 30 Test descriptions for attachment to CCITT Recommendation V.11 interchange circuits . 31 7.4.1 Generator charact
20、eristics . 31 Generator open circuit output voltage . 31 Generator terminated output voltage 32 Generator output rise time 33 Test descriptions for attachment to CCITT V.28 interchange circuits . 34 7.5.1 Generator characteristics . 34 7.2.2.2.2 7.2.3 37-pole connector . 27 7.3 7.3.1.1 7.3.1.2 7.3.1
21、.3 7.4 7.4.1.1 7.4.1.2 7.4.1.3 7.5 STD-ETSI TBR 2-ENGL iw = 3i0055 0171,353 TLT m Page 5 TBR 2: January 1997 7.5.1.1 Generator open circuit output voltage 34 7.5.1.2 Generator terminated output voltage . 35 7.5.1.3 Generator output signal transition time 36 7.5.2 Rece ive r c haracterkt ics 37 7.5.2
22、.1 Receiver effective shunt capacitance 37 Test descriptions for attachment to CCITT Recommendation V.35 interchange circuits 37 7.6.1 Generator characteristics 37 Generator open circuit output voltage 37 Generator terminated output voltage . 39 Generator output rise time . 40 TBR 2 Test Case Select
23、ion Expression Definition table 41 Test case Index . 42 7.6 7.6.1.1 7.6.1.2 7.6.1.3 7.7 7.8 Annex A (normative): The TBR Requirements Table (TBR-RT) . 43 A.l Introduction to the TBR-RT . 43 A.2 Format of the tables 43 A.3 Notations used in the TBR-RT 44 A.3.1 Status notations . 44 A.3.2 Support answ
24、er notations 44 A.4 The TBR Requirement Tables 45 A.4.1 A.4.2 A.4.3 A.4.4 A.4.5 Connection to a DCE presenting an IS0 21 10 8 (25-pole) connector . 45 Connection to a DCE presenting an ISO/IEC 11569 (26-pole) connector . 46 Connection to a DCE presenting an IS0 4902 (37-pole) connector 50 Connection
25、 to a DCE presenting an IS0 2593 (34-pole) connector 52 Connection to a DCE presenting an IS0 4903 12 (15-pole) connector . 55 Annex B (normative): Physical layer implementation extra information for testing (PIXIT) . 57 Annex C (informative): Explanatory note to TBR 58 C.l Purpose of TBR 2 58 C.2 T
26、itle and scope 58 C.3 Relationship to NET 2 . 58 C.4 NET to TBR conversion process . 58 C.5 Means of connection to the DCE . 58 Annex D (informative): Bibliography 59 History 60 STD-ETSI TBR 2-ENGL 1797 3q00855 0171354 75b Page 6 TBR 2: January 1997 Blank page Page 7 TBR 2: January 1997 STD*ETSI TBR
27、 2-ENGL 1797 = 3400855 0171355 872 Foreword This Technical Basis for Regulation (TBR) has been produced by the Terminal Equipment (TE) Technical Committee of the European Telecommunication Standards Institute (ETSI). Introduction The physical layer requirements contained in this TBR are a superset o
28、f the physical layer requirements contained in TBR 1 (see annex D), which relate to the connection of a terminal to a Circuit Switched Public Data Network (CSPDN) using CCITT Recommendation X.21 7. It is recommended that a demonstration of compliance with these requirements be accepted as a demonstr
29、ation of compliance with the relevant parts of TBR 1 for the purpose of determining conformity with that TBR, and vice versa. STD-ETSI TBR 2-ENGL 1777 3Li00855 O17135b 727 Page 0 TBR 2: January 1997 Blank page 1 Scope This Technical Basis for Regulation (TBR) specifies the technical characteristics
30、(electrical and mechanical interface requirements) and access control protocol to be provided by packet mode terminal equipment intended for connection to a dedicated interface of a Packet Switched Public Data Network (PSPDN) using CCITT Recommendation X.25 l, 2 and 3 making use of Link Access Proce
31、dure Balanced (Modulo 8 operation) (LAPB) and Link Access Procedure Balanced (Modulo 128 operation) (LAPB Extended) modes of operation. The objective of this TBR is to ensure that no disturbance occurs to the public network, and to ensure interworking between network and terminal, but without any gu
32、arantee of terminal operation and end to end operability across networks. This TBR contains the minimum set of requirements derived from CCITT Recommendation X.25 l, 2 and3 in accordance with prior European harmonization documents (NET 2, see annex D). The requirements of this TBR are suitable for t
33、esting terminal equipment for connection to CCITT Recommendation X.25 l, 2 and 3 (1980, 1984, and 1988) PSPDNs. Terminal equipment that is capable of either originating only or terminating only, packet level modes of operation have been included. Data Terminal Equipment (DTE) which satisfies the rel
34、evant technical requirements of this TBR may be connected to every PSPDN, use any of the essential (E) facilities and invoke any of the provided additional (A) facilities as given in CCITT Recommendation X.2 4 and 5. For each requirement in this TBR, a test is given, including measurement methods. R
35、equirements apply at the public network interface of the terminal equipment, which may be stimulated to perform tests by additional equipment if necessary. For the purposes of this TBR a terminal equipment comprises of that apparatus included between a PSPDN Network Termination Point (Data Circuit T
36、erminating Equipment (DCE), and the terminal equipment boundary point that delimits the Network to Transport layers as defined in ITU-T (CCITT Recommendation X.200) subclause 7.5 (Reference model of Open Systems Interconnection). Equipment in this context is taken to mean either software, firmware o
37、r hardware. Where the packet mode terminal equipment supplied for test does not contain the functions of layers 1, 2 and 3 (as defined in ITU-T (CCITT Recommendation X.200) subclause 7.5 (Reference model of Open Systems Interconnection), the terminals documentation and instructions for use shall sta
38、te which additional equipment is required for compliance to this TBR and the additional equipment shall be submitted for test, as though all the functional layers were provided by the packet terminal equipment. This TBR also gives guidance on appropriate standards relating to the essential requireme
39、nts on safety. Terminal equipment may be subject to additional or alternative attachment requirements in other CTRs depending on its functionality, in particular if it supports a service which is considered a justified case for regulation of terminal equipment interworking via the public telecommuni
40、cations network. Page 10 STD-ETSI TBR 2-ENGL 1997 3400855 0171358 5TL TBR 2: January 1997 2 Normative references This TBR 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 ar
41、e listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications are to apply to this TBR only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 131 VI CCITT Recommendation X
42、.25 (1 980): “Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit“. CCITT Recommendation X.25 (1 984): “Interface between Data Terminal Equipment (DTE) and D
43、ata Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit“. CCITT Recommendation X.25 (1 988): “Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in
44、the packet mode and connected to public data networks by dedicated circuit“. CCITT Recommendation X.2 (1 984): “International data transmission services and optional user facilities in public data networks“. CCITT Recommendation X.2 (1 988): “International data transmission services and optional use
45、r facilities in public data networks and ISDNs“. CCITT Recommendation X.21 bis (1988): “Use on public data networks of data terminal equipment (DTE) which is designed for interfacing to synchronous V-series modems“. CCITT Recommendation X.21 (1 988): “Interface between data terminal equipment (DTE)
46、and data circuit-terminating equipment (DCE) for synchronous operation on public data networks“. IS0 21 10 (1980): “Information Technology - Data communication - 25-pole DTUDCE interface connector and contact number assignments“. ISOAEC 11 569 (1 992): “Information Technology - Telecommunications an
47、d information exchange between systems - 26-pole interface connector mateability dimensions and contact number assignments“. IS0 4902 (1 980): “Information Technology - Data communication - 37-pole DTWDCE interface connector and contact number assignments“. IS0 2593 (1 984): “Information Technology
48、- Telecommunications and information exchange between systems - 34-pole DTUDCE interface connector and contact number assignments“. IS0 4903 Second edition (1989): “Information Technology - Data communication - 15-pole DTWDCE interface connector and contact number assignments“. CCIlT Recommendation
49、X.200: “Information technology - Open Systems interconnection - Basic reference model: The basic model“. Page 11 TBR 2: January 1997 STD-ETSI TBR 2-ENGL 1777 3Li00855 0373357 Li38 3 Definitions and abbreviations 3.1 Definitions For the purposes of this TBR, the following definitions apply: CCIlT recommendation X.251 tot31 network: A PSPDN network which offers a CCITT Recommendation X.25 l, 2 and 3 DTEIDCE interface providing the (E) facilities for user classes of service 8-1 1 as defined in CCIlT Recommendation X.2, 4 and 5. All ot
