1、 ETSI TS 103 021-1 V1.2.1 (2004-05)Technical Specification Access and Terminals (AT);Harmonized basic attachment requirements for Terminals forconnection to analogue interfaces of the Telephone Networks;Update of the technical contents ofTBR 021, EN 301 437, TBR 015, TBR 017;Part 1: General aspectsE
2、TSI ETSI TS 103 021-1 V1.2.1 (2004-05) 2 Reference RTS/AT-010119-1 Keywords access, POTS, PSTN, terminal ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la
3、 Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents betwe
4、en such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be
5、subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: editoretsi.org Copyright Notification No part may be reproduced exc
6、ept as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2004. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHO
7、NTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 103 021-1 V1.2.1 (2004-05) 3 Contents Intellectual Property Rights4
8、 Foreword.4 Introduction 4 1 Scope 6 2 References 6 3 Definitions and abbreviations.7 3.1 Definitions7 3.2 Abbreviations .8 4 Requirements8 4.1 User information 8 4.2 Physical characteristics of the connection to the TN9 4.2.1 PSTN 9 4.2.2 Leased lines with analogue 2-wire interfaces (A2O and A2S) .
9、9 4.2.3 Leased line with analogue 4-wire interfaces(A4O and A4S)10 4.3 Overvoltage 11 4.4 Safety11 4.5 EMC .11 Annex A (informative): Testing.12 A.1 General .12 A.1.1 Test environment12 A.1.2 Powered state12 A.1.3 Measurements to earth13 A.1.4 Equivalent test methods13 A.1.5 Additional information t
10、o support the test13 A.2 Test impedances .13 A.2.1 Reference impedance .13 A.2.2 Non-reactive line termination.14 A.2.3 Reference Impedance ZRHF.14 A.3 Feeding bridge14 Annex B (informative): Requirements Table (RT) .16 B.1 Guidance for completion of the RT16 B.1.1 Condition table .16 B.1.2 Requirem
11、ents table.16 Annex C (informative): Bibliography.18 History 19 ETSI ETSI TS 103 021-1 V1.2.1 (2004-05) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is public
12、ly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI W
13、eb server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or
14、 may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Access and Terminals (AT). The present document has been produced by ETSI in response to the increasing world-wide use of ETSI TBR documents, and the re
15、quest of the experts in the area to maintain their technical contents in light of the change of the regulatory regime in Europe. It is the intention of ETSI to maintain the present document, in line with the conclusions of TR 101 844 5. The central document for the development of the present one is
16、TBR 021 6 which was originally produced by ETSI in response to a mandate from the European Commission to satisfy a Council Directive which no longer applies. The present document is part 1 of a multipart deliverable covering technical updates to the TBRs: Part 1: “General aspects“; Part 2: “Basic tr
17、ansmission and protection of the network from harm“; Part 3: “Basic Interworking with the Public Telephone Network“. NOTE: Standardizes the aspects of interworking with the network. This part 3 only applies to TE intended for switched networks. Introduction The present document specifies a harmonize
18、d set of basic requirements for terminals that will allow them to be connected to analogue interfaces of Telephone Networks (TN) e.g. PSTNs, non-switched “voice band“ leased lines or Private Telephone Networks. It covers all relevant aspects to ensure network compatibility and connectivity. The exis
19、ting analogue presentation of Public Switched Telephone Networks (PSTNs) in European countries is technically somewhat different, due to historical reasons. The services being offered to the end users also differ to a certain extent. Although different, the networks, however, have many basic commona
20、lities. By restricting the requirements to cover only the interworking that is essential for the establishment of a call to/from a terminal, the signalling aspects can be simplified and harmonized. During the development of TBR 021 6 and EN 301 437 7 it was also frequently noted that TBR 015 8 and T
21、BR 017 9 specified similar requirements, the products were developed on the same technical basis and apparently all these 4 standards could largely converge in a single one. The continuous use of analogue terminals in world-wide networks is a measure of the need for such equipment. This type of equi
22、pment is undergoing constant and rapid development, and it is therefore imperative that the delay in, and cost of, market introduction caused by the network specific characteristics should be the minimum possible. Otherwise, new innovative products may be delayed. Also, countries where the market is
23、 comparatively small may never benefit from these products, if the cost of market introduction is too high. ETSI ETSI TS 103 021-1 V1.2.1 (2004-05) 5 According to the former European regulatory regime, Terminal Equipment (TE) intended to be connected to the Public Network was required, among other t
24、hings, to: do not cause harm to the network; be able to interwork with the network in order to set up, hold, modify, charge for and clear down a connection; interwork via the network, in “justified“ (identified in other legislation) cases. The requirements for Terminal Equipment (TE) in the present
25、document are based on the assumption that the relevant access characteristics of the network comply to or are comparable with ES 201 970 10, which is believed to cover the majority of PSTN implementations. In TBR 021 6 only a single connected terminal was considered, the values in the requirements w
26、ere based on TEs consuming all network resources. In the present document the parallel connection of up to four TE is considered and it is also assumed that only one of them is in the loop state at any one time. EG 201 120 11 gives guidance on the parallel and/or series connection of TEs in an insta
27、llation. As was the case with TBR 021 6 the present document is intended primarily for use within the Pan-European region, however, it is considered that it may be equally applicable on a world wide basis should the relevant authorities or network operators choose to use it. ETSI ETSI TS 103 021-1 V
28、1.2.1 (2004-05) 6 1 Scope The present document is a part of a multipart document. It specifies basic compatibility and interoperability aspects, including basic transmission, which are applicable to all Terminal Equipment (TE) intended to be connected to analogue interfaces of public or private, swi
29、tched or non-switched telephone networks. The present document is applicable to a TE which is capable of accessing an analogue telephone network line at the Network Termination Point (NTP). The present document specifies the connection arrangements (plug or socket, of the suppliers choice) to be pro
30、vided by the TE. Any connection/mechanical/wiring adapter that may be required between the terminal and the existing NTP is outside the scope of the present document. The present document is intended to ensure that no harm occurs to the network. 2 References The following documents contain provision
31、s which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific referenc
32、e, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 TIA/EIA/IS-968 (2001): “Telecommunications - Telephone Terminal Equipment - Technical Requirements for Connection of Terminal
33、 Equipment to the Telephone Network“. 2 ITU-T Recommendation G.100 (2001): “Definitions used in Recommendations on general characteristics of international telephone connections and circuits“. 3 ISO/IEC 8877 (1992): “Information technology - Telecommunications and information exchange between system
34、s - Interface connector and contact assignments for ISDN Basic Access Interface located at reference points S and T“. 4 ETSI EG 201 450: “Guidance on the identification of Harmonized Standards and/or other technical specifications for Radio equipment and Telecommunications Terminal Equipment (R Stud
35、y of the global usage and acceptance of non-radio TBRs and associated documents“. 6 ETSI TBR 021: “Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony s
36、ervice) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling“. 7 ETSI EN 301 437: “Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE supporting the
37、 voice telephony service in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling“. 8 ETSI TBR 015: “Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 2-wire analogue leased lines (A2O and A2S); Attachment requirements for ter
38、minal equipment interface“. ETSI ETSI TS 103 021-1 V1.2.1 (2004-05) 7 9 ETSI TBR 017: “Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Attachment requirements for terminal equipment interface“. 10 ETSI ES 201 970: “Access an
39、d Terminals (AT);Public Switched Telephone Network (PSTN); Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented Network Termination Point (NTP)“. 11 ETSI EG 201 120: “Public Switched Telephone Network (PSTN); Method of rating terminal equipment so that i
40、t can be connected in series and/or in parallel to a Network Termination Point (NTP)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: connection to earth: connection to earth means that all the following points, as
41、 applicable are connected to the earth point during measurement: a point in the TE which is intended to be connected to mains earth (in practice this might be carried out by connecting to the earth of the mains source which is supplying the TE); connector points which are intended to be connected to
42、 earth during the normal operation of the apparatus. loop state: state where the TE draws sufficient DC current to activate the exchange Network Termination Point (NTP): physical point at the boundary of the Telephone network intended to accept the connection of a TE NOTE: See figure 1 of the presen
43、t document. Public Switched Telephone Network (PSTN): term is used to describe the ordinary telephone system including subscriber lines, local exchanges and the complete system of trunks and the exchange hierarchy which makes up the network reference impedance ZR: complex impedance made up of 270 in
44、 series with a parallel combination of 750 and 150 nF return loss: As described in ITU-T Recommendation G.100 2. Terminal Connection Point (TCP): point of the TE intended to be connected to the TN NOTE: A connection/wiring adapter may be required between the terminal and the existing national networ
45、k termination point in individual countries. Such an adapter is outside the scope of the present document (see figure 1). Suitable adapter and/or installation facilities TE TCP NTP TCP interface NTP interface TN Figure 1: Terminal Connection Point (TCP) and Network Termination Point (NTP) ETSI ETSI
46、TS 103 021-1 V1.2.1 (2004-05) 8 Telephone Network (TN): a telecommunication network mainly exchanging voice band signals NOTE: TN is a general term for PSTN, non-switched leased lines and private telephone networks. Terminal Equipment (TE): equipment intended to be connected to the TN; i.e.: to be c
47、onnected directly to the termination (NTP) of a TN; or to interwork with a TN being connected directly or indirectly to the NTP; in order to send, process or receive information. NOTE 1: The system of connection may be wire, radio, optical or other electromagnetical system. NOTE 2: TE intended to be
48、 connected to public networks may be subject to particular regulatory treatment, whereas TE intended to be connected to private networks are usually not subject to particular regulatory treatment. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: A2O Ordi
49、nary quality voice bandwidth 2-wire analogue leased line A2S Special quality voice bandwidth 2-wire analogue leased line A4O Ordinary quality voice bandwidth 4-wire analogue leased line A4S Special quality voice bandwidth 4-wire analogue leased line AC Alternating Current DC Direct Current DTMF Dual Tone Multi-Frequency EMC ElectroMagnetic Compatibility LVD Low Voltage Directive NTP Network Termination Point PSTN Public Switched Telephone Network RT Requirements Table RX interface signal Receiver TCP Terminal Co
