SIST EN 300 001 V1.5.1:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Attachments to the Public Switched Telephone Network (PSTN); General technical requirements for equipment connected to an analogue subscriber interface in the PSTN33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 300 001 Version 1.5.1SIST EN 300 001 V1.5.1:2003en01-december-2003SIST EN 300 001 V1.5.1:2003SLOVENSKI
STANDARD



SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)European Standard (Telecommunications series)Attachments to Public Switched Telephone Network (PSTN);General technical requirements for equipment connected toan analogue subscriber interface in the PSTN;Chapter 1: GeneralSIST EN 300 001 V1.5.1:2003



ETSI2ReferenceREN/ATA-001016.5 (00c00joo.PDF)KeywordsPSTN, access, terminalETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1998.All rights reserved.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)3ContentsIntellectual Property Rights.5Foreword.51General.71.1Introduction.71.1.1Foreword.71.1.2NETs.71.1.3Types of NET.81.1.4NET 4.81.2Scope.91.3Method of use.121.3.1Structure of the present document.121.3.2Use of requirements and tests.121.4Definitions of terms used in the present document.131.4.1Local subscriber line (analogue).131.4.2Public Switched Telephone Network (PSTN).131.4.3PSTN connection point.131.4.4Terminal equipment.141.4.4.1General definitions.141.4.4.2Types of TE.171.4.4.3Reference model of a TE.201.4.4.4Testing point.201.4.5States or conditions of TE.231.4.5.1Quiescent or idle state or condition.251.4.5.2Ringing state or condition.261.4.5.3Loop state or condition.261.4.5.4Dialling or signalling state or condition.271.4.5.5Register recall state or condition.271.4.6Line terminals.271.4.7Speech band.271.5DC feeding arrangements.281.5.1Requirement values for feeding conditions.351.5.2Test values for feeding conditions.391.6Test parameters.421.6.1Environmental conditions.421.6.2Tolerances of components used for testing.421.6.3Test equipment accuracy.421.6.4Test equipment resolution.421.6.5Measurement values.431.6.6TE connection.431.6.6.1Series-connected TEs.431.6.6.2Additional wires.431.7Summary of network tones and signals (informative).441.7.1Dial tone.441.7.2Ringing tone.481.7.3Busy tone.511.7.4Congestion tone.531.7.5Special information tone(s).551.7.6Call in progress tone.601.7.7Tones for other purposes.611.7.8Frequencies for pulse metering.711.7.9Ringing signal.75SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)41.8Abbreviations.801.9National designators.831.10Symbols.841.11Summary of references.87History.90SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)5Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. Theinformation pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentiallyEssential, IPRs notified to ETSI in respect of ETSI standards", which is available free of charge from theETSI Secretariat. Latest updates are available on the ETSI Web server (http://www.etsi.org/ipr).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 SR 000 314 (or theupdates on the ETSI Web server) which are, or may be, or may become, essential to the presentdocument.ForewordChapter 1 of this European Standard (Telecommunications series) has been produced by the AnalogueTerminals and Access (ATA) Project of the European Telecommunications Standards Institute (ETSI).For historical purposes, the present document was drafted in the form of a NET. However, the terms NETor NET 4 in this document should be read as EN or EN 300 001 respectively.This fifth edition of the present document has been converted from an ETS to an EN in order to align withthe current ETSI deliverable types.The present document comprises ten chapters:"Attachments to Public Switched Telephone Network (PSTN); General technical requirements forequipment connected to an analogue subscriber interface in the PSTN".Chapter1-GeneralChapter2-DC characteristicsChapter3-Ringing signal characteristicsChapter4-Transmission characteristicsChapter5-Calling functionsChapter6-Answering functionChapter7-Power failureChapter8-Connection methodsChapter9-Special functionsChapter10-Additional unclassified requirementsThis is the first chapter providing, among other information, the scope of the present document,definitions, symbols and abbreviations, an explanation of the structure of the present document and itsmethod of use.The present document contains requirements and associated compliance tests. Each compliance test hasbeen assigned a section number which is identical to that of the related requirement and has been giventhe prefix "A". The requirements and their associated compliance tests are grouped together in the mainbody of the present document.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)6National variations to each requirement and test, which may be particular to an Administration, are givenas additional text within the body of each requirement or test. The national designations used are given insection 1.9 of this chapter. Section 1.3 provides further details on the structure and how to use the presentdocument.Transposition datesDate of latest announcement of this EN (doa):31 January 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 July 1999Date of withdrawal of any conflicting National Standard (dow):31 July 1999SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)71General1.1Introduction1.1.1ForewordIt is recognised, in the field of telecommunications within Europe, that there is a need to create commonEuropean standards for telecommunication equipment.Such harmonisation would, among other things, facilitate co-operation between telecommunicationequipment manufacturers and public telecommunication network operators, create a marketplace whichnaturally transcends that of national frontiers, enhance the efficiency of business and othercommunications across Europe to bring economic benefits, and help translate the vision of a unitedEurope into a working reality.In 1985, an initiative by the Conference of European Posts and Telecommunications Administrations(CEPT) resulted in the drafting of a Memorandum of Understanding (MoU) agreeing to the mutualrecognition of results of tests of conformity to a technical specification which would be known as a NormeEuropéenne de Telecommunication (or NET). The signatories of the MOU represent thetelecommunications administrations of most countries in Western Europe, including EEC and EFTAadministrations.In 1986, European Community Council Directive 86/361/EEC laid down the principles of the initial stage ofthe mutual recognition of type approval for telecommunications Terminal Equipment (TE). The Directiveimposes the obligation on EC Member States to implement the recognition of tests to common conformityspecifications.1.1.2NETsThe guiding principals under which a NET is written are the need to ensure that essential requirementsare met.These include:-user safety, insofar as this requirement is not covered by other legal instruments (e.g. Directive73/23/EEC);-safety of employees of the public telecommunication network operators, insofar as this requirementis not covered by other legal instruments (e.g. Directive 73/23/EEC);-protection of public telecommunication networks from harm;-interworking of TE, in justified cases.Each NET constitutes part of a series of NETs prepared in response to the MOU and the EC Directive86/361.A NET details the requirements, and a specification of interface tests for conformance to thoserequirements, which a defined type of telecommunication TE is required to satisfy in order to obtainauthorisation for connection of the equipment to a defined European Telecommunications Network. TheNET also includes, where appropriate, requirements made necessary in a given State by historicalnetwork peculiarities.The existence of a NET will make it possible for an accredited laboratory in a country whoseadministration has signed the MOU, to carry out tests, specified in the NET, on TE submitted to it, and toissue a test report. On the basis of the report, a competent body may then issue a certificate of conformityto the NET. There may of course be cases where the laboratory itself is the competent certificationauthority. This certificate is then recognised as valid in all other signatory countries, avoiding the need forthe equipment to have to undergo the same tests, over and over again, each time approval is applied forin any of those countries.The common reference point which a NET represents thus offers the opportunity of substantially reducingthe complexity, length and cost of approval formalities. The operators of public networks are required tomake reference to relevant NETs in public supply contracts. Manufacturers are thereby enabled tocompete on a more equal technical basis in the supply of terminal equipment covered by NETs.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)81.1.3Types of NETThe majority of NETs fall into one of two categories; access NETs and terminal NETs as described below;a)Access NETDetails of the technical characteristics (electrical, mechanical and access control protocols), to beoffered by TE at the interface to a specific public telecommunications network are covered in anaccess NET.The objective of an access NET is to ensure no disturbance occurs to the network and to ensureinterworking between network and TE so that calls can be routed successfully through the network(but without any guarantee of terminal to terminal operation). Indeed, since an access NET mayhave to serve a number of terminal NETs and applications which have not even been envisaged atpresent, it is important for the content not to include anything which is particular to a specificterminal or otherwise inhibiting to new developments.b)Terminal NETThe objective of a terminal NET is to ensure the end-to-end compatibility of a definedtelecommunication service. The terminal NET should indicate any requirement which must beadded to the corresponding access NET(s) to ensure end-to-end communication.1.1.4NET 4ETSI has adopted this approach in the generation of NETs, but labelled as follows:a)Aspect 1 - General requirements;b)Aspect 2 - Access requirements;c)Aspect 3 - TE requirements.This document is a candidate for adoption as an access NET and is to be used for type approvalaccording to the scope stated in section 1.2.TE submitted for type approval is subject to Aspect 1 requirements in every case and, in addition to otherrelevant requirements e.g. NETs, international or national specifications. Such additional requirements arenot contained in this document.Aspect 3 NETs or other national standards which are relevant to a given type of TE meeting therequirements of this NET shall be in addition to, and refer to the requirements in this NET and shall notmodify the requirements in this access NET.1.1.4 (D) 1In accordance with the three level approach of EG and ETSI, all TEs have tofulfil in addition to the requirements stated in this document the following Aspect1 requirements:-electrical safety;-climatic environment;-EMC.As long as there are no European recommendations for electrical safety, climateand EMC, the relevant enclosures of the national specifications 1 TR 2, Part 1are applicable.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)91.2ScopeThis Access EN specifies the technical requirements (electrical, mechanical and method of signalling) andtheir associated compliance tests to be met by all TE at each of its ports provided for connection to thePublic Switched Telephone Network (PSTN). This connection is effected at a standard analogue interface.This interface is characterised by a two-wire derived presentation using DC loop seizure and clear andlow-frequency AC ringing signals below the speech passband.These requirements and associated compliance tests form the definition of the standard analogue PSTNaccess (Aspect 2) in each of the participating Administrations.It is recognised that for historical reasons requirements and their associated compliance tests may includevalues particular to each Administration's network. These requirements reflect existing standards.This access EN does not necessarily contain all the requirements which a specific type of TE shall meet inorder to gain type approval for attachment to the relevant PSTN attachment point.1.2 (BG) 1The present document does not form the type approval requirements forequipment that contain certain call routing or certain switching functions, inthese cases Bulgarian national requirements apply and reference shall be madeto the Bulgarian Approval Authority in order to determine the totality of applicablerequirements and associated tests.The present document is applicable for telecommunications systems in whichthe a/b input wires are switched galvanically to the extension lines.1.2 (CZ) 1The present document applies to Terminal Equipment (TE) connected to theanalogue interface of the Public Switched Telephone Network (PSTN).It does not apply to mobile radiotelephony and terminal equipment for whichtechnical specifications exist, e.g. public coin or card telephone equipment,shared subscriber lines, transmission and line-sharing subscriber equipment.The present document applies adequately to complex systems connected to thePSTN which:-enable the interconnection of one PSTN access point with at least two other accesspoints, or-are able to interconnect two PSTN access points mutually, or-are able to simultaneously transmit identical information to two or more PSTN accesspoints.1.2 (CZ) 2 For terminal equipment connected to shared subscriber lines or to transmissionor line-sharing subscriber equipment, modified or additional requirements givenin the technical specifications are valid.1.2 (SF) 1This document does not form the type approval requirements for TE that containcall routing and switching functions except very small PBXs or key systems with1 or 2 trunk lines. For TE with more trunk lines, the national standards apply.1.2 (F) 1The national values contained in the current issue of this NET are not applicableto the standard analogue interface used for the connection to the PSTN whenconnecting a complex installation. For these types of installation, connection tothe PSTN is covered by:-I-ETSs 300 003 and 300 004 for transmission characteristics of digital PABXs;-national standards for other characteristics of digital PABXs and for other complexinstallations, until a new enhancement of the present document will be available.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)10Complex installations are hereby understood as equipment:-including switching capability to interconnect at least one PSTN access with at leasttwo other ports (e.g. PBXs);or-able to interconnect PSTN accesses (e.g. call diverting devices);or-able to broadcast the same information to several PSTN accesses at the same time.1.2 (D) 1This type approval specification defines the requirements to be met by allterminal equipment intended for connection to analogue accesses (with theexception of emergency telephone and direct dialling-in accesses) in thetelephone network / ISDN of Deutsche Bundespost TELEKOM. Where atechnical test is provided for reference is made to the correspondingmeasurement method. Where compliance with a specific requirement is notverified by means of a test, the requirement shall nevertheless be fulfilled if it isapplicable to the area(s) for which a terminal is designed.Unless otherwise stated, the requirements given in this type approvalspecification apply to the network termination of the analogue switched access,i.e. the refer exclusively to this interface and shall also be met in the case whereseveral terminals are to be used collectively at this one interface.1.2 (D) 2This guideline does not apply to TE intended to be connected to:-user access for broadcast services;-radiopaging accesses;-special telephone accesses;a)mobile radiotelephone accesses;b)accesses for maritime mobile communication;c)Rhine radiotelephone accesses;d)emergency telephone accesses for the police and fire brigade;e)public emergency call boxes;-telephone accesses with Impulskennzeichengabe (IKZ);-telephone accesses with Gleichstromkennzeichengabe (GKZ);-accesses for Group 1 fixed connections (leased lines);-accesses for the warning and alarm service.For these accesses special regulations apply.1.2 (I) 1This document does not form the type approval requirements for those TE thatcontain call routing or switching functions. In these cases Italian nationalrequirements apply. In every case, reference must be made to the ItalianApproval Authority in order to determine the totality of applicable requirementsand associated tests.1.2 (NL) 1This document does not contain the type approval requirements for those TEthat contain call routing and switching functions, nor the additional accessrequirements for those especially designated for the support of PSTN facilities(i.e. PSTN Calling Line Identification presentation) or for the use of specificPSTN properties (i.e. battery reversal as seizure / release indication). In thesecases Dutch national requirements apply and reference must be made to theDutch Approval Authority in order to determine the totality of applicablerequirements and associated tests.1.2 (N) 1This document does not contain the type approval requirements for thoseequipment that includes call routing and switching functions, and which provideslocal DC loop current on the extension side of the equipment. In these cases theNorwegian national requirements apply.1.2 (SK) 1This specification defines the requirements to be met by all terminal equipmentintended for connection to analogue accesses in the telephone network in theSlovak republic.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)111.2 (S) 1This document is not applicable for terminal equipment that is definable as aPBX.1.2 (CH) 1For legal purposes the Swiss national requirements apply. The presentdocument was up-dated according to the last version (July 1995) of the Swissnational requirements and can be used for every kind of TE (e.g.: voice, data orPABX). The Swiss national requirements are based on the present document(technical aspects) and introduce additional regulatory aspects.1.2 (GB) 1This document does not form the type approval requirements for equipment thatcontain certain call routing or certain switching functions, in these cases UKnational requirements apply and reference must be made to the UK ApprovalAuthority in order to determine the totality of applicable requirements andassociated tests.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)121.3Method of use1.3.1Structure of the present documentThe present document contains requirements and associated compliance tests. Each compliance test hasbeen assigned a section number which is the same as the related requirement and has, in addition, aprefix "A". Thus the requirements and their associated compliance tests are grouped together in the mainbody of the document.Where applicable, each requirement and associated compliance test have harmonised text which includesparameters to which each Administration may assign its own values. In these cases, parameter values areset out in accompanying tables.National variations to each requirement and test which may be particular to a single Administration are setout as additional text within the body of each requirement or test. These are designated nationallyaccording to the convention set out in section 1.9 and are referenced in the "remarks" column of relevanttables.The present document includes a number of Chapters, arranged according to general technical content;Chapter 1 includes introductory information of a general nature, definitions and abbreviations. Chapter 10includes technically unclassified additional national requirements and tests particular to variousAdministrations. It may therefore be necessary, in order to determine the total requirement andcompliance test in any given case, to refer to the harmonised text and its national variations as well as tothe relevant contents in Chapter 10.1.3.2Use of requirements and testsEach of the requirements in the common text of this document is a harmonised text. The use of eachrequirement by each Administration is determined by parameter values shown in the requirement table(s)and may be qualified further by remarks. These are set out in the requirement table(s).It is common to find that certain requirements are to be met over ranges of parameter values; forexample, return loss values might be required to be met over two independent ranges of frequency and ofloop current. In such cases, compliance may be determined by testing at a limited number of parametertest values within these ranges. Such cases are clearly set out. TE which, on the basis of testing outlinedin this document, appears to comply with a requirement but which subsequently is found to be non-compliant at an untested point within the range must be considered according to the relevant typeapproval procedures under which this document is used.SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)131.4Definitions of terms used in the present documentThe following terms are given particular meaning within the present document. Other technical terms notspecifically mentioned are to be taken according to their normally accepted meaning.1.4.1Local subscriber line (analogue)An analogue subscriber line is part of a local telephone network and is traditionally metallically connectedto the analogue interface of an exchange port by means of two wires (normally termed the a-wire and theb-wire) and to which an unique telephone network address has been assigned (telephone number).NOTE:This definition does not exclude standard analogue interfaces of the PSTN where aunique telephone network address is assigned to a number of such separate physicalpresentations.1.4.2Public Switched Telephone Network (PSTN)A generally used term for the nation-wide public telephone network comprising interconnected telephoneexchanges capable of switching telephone calls between telephones connected to the network(exchanges).1.4.3PSTN connection pointThe point where the local subscriber line (analogue) is terminated, the PSTN standard analogue interfaceis presented and the TE is connected. Reference is made to figure 1.4.4.3.a)Leads a1 and b1 are provided for connection to the PSTN.b)Leads a2 and b2 (if they are provided) are intended for the connection of this TE in series withother TEs.c)Additional leads for instance n1 (if provided) are intended for auxiliary connections, to be defined bythe National Administrations' Network Termination Schedules (Chapter 8).d)Additional leads for instance n2 (if provided) are intended for optional connections, to other TEs, tobe defined in Chapter 8.e)Lead "e" (if provided) is intended for connection to signal earth.f)Figure 1.4.4.3 does not indicate that TEs may have other interfaces. These interfaces are notdescribed in this document.1.4.3 (CZ) 1Requirements for the correct operation of TE connected to the PSTN CP:Interworking between several TE (connected to one PSTN CP) requires that thefollowing requirements, which define the basic design criteria of all PSTNconnectable TE, are complied with.They are:a)Attachment of the ringing signal detectors.Only a limited number of ringing signal detectors circuits (i.e. the number of TE withtheir ringing signal detectors connected in parallel on the input terminals a1 and b1 ofthe TE) may be connected in parallel to the "a" and "b" terminals of the PSTN CP. Themaximum number of such connected signal circuits (respectively TE) is given by thesum of the REN-CZ numbers (definition and calculation of REN-CZ - see sections3.1.1 (CZ) 3, 3.1.1 (CZ) 4, 8.3 (CZ) 1.2 and 8.3 (CZ) 1.3).SIST EN 300 001 V1.5.1:2003



EN 300 001 V1.5.1 (1998-10)14b)The attachment of the speech circuits.At the PSTN CP, the TE shall be connected to the "a" and "b" wires in a manner whichensures only one speech circuit can be connected at any given time. This is thespeech circuit of the TE which is in the loop state or the TE with priority in transitioninto the loop state.c)TE operational independence of 230
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