1、 ETSI EG 201 730-2 V2.1.2 (2006-11)ETSI Guide Terminals access to Public Telecommunications Networks;Application of the Directive 1999/5/EC (RGuidelines for the publication of interface specifications;Part 2: Analogue narrow-band wireline interfacesETSI ETSI EG 201 730-2 V2.1.2 (2006-11) 2 Reference
2、 REG/AT-010140 Keywords access, analogue, interface, ISDN, network, POTS, PSTN, public, regulation, 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 enregistr
3、e la 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 b
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8、TSI EG 201 730-2 V2.1.2 (2006-11) 3 Contents Intellectual Property Rights5 Foreword.5 Introduction 5 1 Scope 6 2 References 6 3 Definitions and abbreviations.7 3.1 Definitions7 3.2 Abbreviations .7 4 Applicability of parameters to interface types8 5 Parameters to be specified10 5.1 Connection method
9、.10 5.2 Wiring arrangements and driving capability 10 5.3 DC Voltages and feed conditions .10 5.3.1 DC Voltage - on hook.10 5.3.2 Polarity10 5.3.3 Line current.11 5.3.4 Park condition.11 5.4 Seizure11 5.4.1 Conditions at the NTP not recognized as a seizure.11 5.4.2 Conditions at the NTP to facilitat
10、e line testing .11 5.4.3 Conditions at the NTP which will be interpreted as a seize signal .11 5.4.4 Time required for seizure signal to be recognized11 5.4.5 TE clearing seizure and return to on hook state11 5.5 Transmission 12 5.5.1 Frequency band.12 5.5.2 Relative level 12 5.5.3 Input impedance12
11、 5.5.4 Longitudinal conversion loss 12 5.5.5 Coding law13 5.5.6 Noise.13 5.6 Acceptable signal levels at the NTP.13 5.7 Supervisory tones .13 5.8 Dialling.13 5.8.1 Dialling type .13 5.8.2 Reception of first digit 13 5.8.3 Number and timing of call attempts13 5.8.4 DTMF dialling13 5.8.5 Loop disconne
12、ct dialling.14 5.9 Ringing signals.14 5.10 Register recall.14 5.10.1 Timed break recall 14 5.11 Answer signal.14 5.12 Charge information.14 5.12.1 Meter Pulses15 5.13 Clearing signal from the network.15 5.14 Signalling for supplementary services15 5.15 Signalling for PSTN display services.15 Annex A
13、 (informative): List of most useful standards 16 A.1 General .16 A.2 List of standards .16 A.2.1 Main document: ES 201 970 16 ETSI ETSI EG 201 730-2 V2.1.2 (2006-11) 4 A.2.2 Additional documents.16 A.2.3 Leased lines 17 Annex B (informative): Bibliography.18 History 20 ETSI ETSI EG 201 730-2 V2.1.2
14、(2006-11) 5 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 publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellect
15、ual 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 Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigat
16、ion, 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 may be, or may become, essential to the present document. Foreword This ETSI Guide (EG) has b
17、een produced by ETSI Technical Committee Access and Terminals (AT). The present document is part 2 of a multi-part deliverable covering the Terminals access to Public Telecommunications Networks; application of the Directive 1999/5/EC (R Guidelines for the publication of interface specifications as
18、identified below: Part 1: General and common aspects; Part 2: Analogue narrow-band wireline interfaces; Part 3: Digital wireline interfaces; Part 4: Broadband multimedia cable network interfaces. NOTE: Parts 3 and 4 are presently being developed. Later new parts may be created and this will be refle
19、cted in the present document. Introduction Directive 1999/5/EC 1 introduced a fundamental change in the area of terminal equipment interworking with the public telecommunications telephone network. Formerly there were specifications that applied to terminal equipment ensuring, to varying degrees of
20、confidence, interworking with and via different networks. Under Directive 1999/5/EC 1 an obligation is placed on PNOs and PSPs to publish specifications of network interfaces they provide. Article 4.2 of the Directive states: “Member States shall ensure that such operators publish accurate and adequ
21、ate technical specifications of such interfaces before services provided through those interfaces are made publicly available, and regularly publish any updated specifications. The specifications shall be in sufficient detail to permit the design of telecommunications terminal equipment capable of u
22、tilizing all services provided through the corresponding interface. The specifications shall include, inter alia, all the information necessary to allow manufacturers to carry out, at their choice, the relevant tests for the essential requirements applicable to the telecommunications terminal equipm
23、ent. Member States shall ensure that those specifications are made readily available by the operators.“ The present document provides guidance on the minimum content of such publications for the area of analogue wired access to the public telecommunications network in order to meet this requirement.
24、 The present document was produced in the context of the integration of all ETSI deliverables published with the aim of facilitating the application of the R Guidelines for describing analogue interfaces: NOTE: A more complete introductory text is offered in EG 201 730-1 10. ETSI ETSI EG 201 730-2 V
25、2.1.2 (2006-11) 6 1 Scope The purpose of the present document is to assist the public network operators and public service providers in producing interface publications according to article 4.2 of Directive 1999/5/EC 1. The present document lists the parameters of the analogue narrow-band wireline i
26、nterface to the public telecommunications network which could be necessary for a description of that interface. NOTE: General aspects of the guidance on producing interface publications according to article 4.2 of Directive 1999/5/EC 1 are offered in EG 201 730-1 10. The present document gives techn
27、ology specific guidance. The interface types dealt with are as follows: Analogue access to PSTN. Analogue leased lines, 2-wire and 4-wire. Indirect access to services and networks are also covered in the present document. The timing and other administrative issues of publications are not covered in
28、the present document. 2 References The following documents contain provisions 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 specif
29、ic reference, subsequent revisions do not apply. For a non-specific reference, 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. NOTE: While any hyperlinks included in this clause
30、were valid at the time of publication ETSI cannot guarantee their long term validity. 1 Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R Network Termination
31、 Point (NTP) analogue interface; Specification of physical and electrical characteristics at a 2-wire analogue presented NTP for short to medium length loop applications“. 3 ETSI EG 201 120: “Public Switched Telephone Network (PSTN); Method of rating terminal equipment so that it can be connected in
32、 series and/or in parallel to a Network Termination Point (NTP)“. 4 ETSI ES 201 235-3: “Access and Terminals (AT); Specification of Dual-Tone Multi-Frequency (DTMF) Transmitters and Receivers; Part 3: Receivers“. 5 ETSI EN 300 659-1: “Access and Terminals (AT); Analogue access to the Public Switched
33、 Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 1: On-hook data transmission“. 6 ETSI EN 300 659-2: “Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local lo
34、op for display (and related) services; Part 2: Off-hook data transmission“. ETSI ETSI EG 201 730-2 V2.1.2 (2006-11) 7 7 ETSI TR 101 092 (V1.1.1): “Network Aspects (NA); Report on Carrier Selection“. 8 ITU-T Recommendation G.711: “Pulse code modulation (PCM) of voice frequencies“. 9 ETSI TR 102 083:
35、“Human Factors (HF); Supplementary service codes for use in public network services“. NOTE: See also the “ETSI Register of Supplementary Service codes“ http:/portal.etsi.org/HF/hf_service_codes.asp. 10 ETSI EG 201 730-1: “Terminals access to Public Telecommunications Networks; Application of the Dir
36、ective 1999/5/EC (R Guidelines for the publication of interface specifications; Part 1: General and common aspects“. 11 Directive 2002/22/EC of the European Parliament and of the Council of 7 march 2002 on universal service and users rights relating to electronic communications networks and services
37、 (Universal Service Directive). 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: A-wire: one of the wires used in the 2-wire local loop to provide connection to the NTP B-wire: other wire (in relation to A-wire) used
38、 in the 2-wire local loop to provide connection to the NTP Carrier Selection Code (CSC): part of the dialling procedure, which indicates selection and provides information about the required transport network provider Network Termination Point (NTP): physical point at which a subscriber is provided
39、with access to a public communications network NOTE 1: In the case of networks involving switching or routing, the NTP is identified by means of a specific network address, which may be linked to a subscriber number or name (Universal Service Directive 11). NOTE 2: The NTP is often referred to as “a
40、ccess interface“ in the present document. park condition: condition which may be applied at the NTP by the network in order to facilitate reduced power consumption in the network public telecommunications network: telecommunications network used to provide publicly available telecommunications servi
41、ces 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AoC Advice of Charge CEC Commission of the European Communities CLI Calling Line Identity CSC Carrier Selection Code DC Direct Current DTMF Dual Tone Multi-Frequency (signalling) IP Internet Protocol I
42、TU-T International Telecommunication Union - Telecom NGN Next Generation Network NTP Network Termination Point PNO-A Public Network Operator-A PNO-B Public Network Operator-B ETSI ETSI EG 201 730-2 V2.1.2 (2006-11) 8 POTS Plain Old Telephone Service PSP Public Service Provider PSTN Public Switched T
43、elephone Network TE Terminal Equipment ULL Unbundled Local Loop 4 Applicability of parameters to interface types A more complete analysis on the possible scenarios and configuration of the user access to the Public Network is presented in the clause 7 of EG 201 730-1 10. In this clause only most com
44、mon configurations used for access systems in the scope of the document are cited. The parameters described in the present document are applicable to various types of analogue access to the public telecommunications network. Direct access to telecommunications networks is considered, the most common
45、 scenarios are described in table 1. Indirect access to telecommunications networks is also considered, the most common scenarios are described in table 2. Table 1: Methods of direct access to PNO Scenario Who Publishes Comments Scenario 1 TE PNO A PNO B Network Operator A only publishes specificati
46、ons relating to Network A. Standard Interconnect. Customer only has contract with PNO A. Scenario 2 TE PNO A TE Leased Network Operator A publishes specification. Customer only has contract with PNO A. Key TE Terminal Equipment NTP Switch NOTE 1: The PNO indicates the person or body responsible for
47、the Network. It is assumed that PNO B can also be the PSP. NOTE 2: Table 1 is the same as table 2 of EG 201 730-1 10. Table 2: Methods of indirect access to PNO Scenario Who Publishes Comments Scenario 1 TE PNO A PNO B ULL Network Operator B (PNO A will need to supply PNO B with technical informatio
48、n on local access network used by PNO B). Unbundled Local Loop (ULL). Scenario 2 TE PNO A PNO B Leased Network Operator B (and Network Operator A in the case where the user has a direct contract with PNO A for the leased line). PNO A provides lease line connection between TE and PNO B. ETSI ETSI EG
49、201 730-2 V2.1.2 (2006-11) 9 Scenario Who Publishes Comments Scenario 3 TE PNO A PNO B CSC Network Operator A and Network Operator B. For PNO A it is likely to be the same interface specification as in Scenario 1 of direct access (table 1). For PNO B, only the information above and beyond information already provided by PNO A needs to be published e.g. second dial tone, Call Party Answer signal. Indirect Access where CSC is the carrier selection code as described in TR 101 092 7. Carrier pre-selection is also covered in th
