Integrated Services Digital Network (ISDN); Primary rate user-network interface; Layer 1 specification and test principles

Management of the existing ETSs for layer 1 characteristics of ISDN interfaces

Digitalno omrežje z integriranimi storitvami (ISDN) – Primarni vmesnik uporabnik-omrežje – Specifikacija prve plasti in načela preskušanja

General Information

Status
Published
Publication Date
30-Nov-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2003
Due Date
01-Dec-2003
Completion Date
01-Dec-2003

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SIST ETS 300 011 E1:2003
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Primary rate user-network interface; Layer 1 specification and test principles33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:ETS 300 011 Edition 1SIST ETS 300 011 E1:2003en01-december-2003SIST ETS 300 011 E1:2003SLOVENSKI

STANDARD
SIST ETS 300 011 E1:2003

EUROPEANETS 300 011TELECOMMUNICATIONApril 1992STANDARDSource: ETSI TC-TMReference: DE/TM-0310ICS:33.080, 33.040, 33.040.50Key words:ISDN, primary rate user-network interface, testingIntegrated Services Digital Network (ISDN);Primary rate user-network interfaceLayer 1 specification and test principlesETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 92 94 42 00 - Fax: +33 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1992. All rights reserved.SIST ETS 300 011 E1:2003

Page 2ETS 300 011 : April 1992Whilst every care has been taken in the preparation and publication of this document, errors in content,typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to"ETSI Editing and Standards Approval Dept." at the address shown on the title page.SIST ETS 300 011 E1:2003

Page 3ETS 300 011 : April 1992ContentsForeword...........................................................................................................................................71Scope......................................................................................................................................92Normative references................................................................................................................93Definitions...............................................................................................................................114Abbreviations..........................................................................................................................125Conformance..........................................................................................................................126Requirements..........................................................................................................................13Annex A (normative):Application of the ETS 300 011 for PTNX interconnections (leased lines)........29A.1Introduction.............................................................................................................................29A.2Layer 1 modes of operation and interface/application models.....................................................29A.2.1Point-to-point mode of operation................................................................................30A.2.2Multipoint mode of operation......................................................................................31A.3Special requirements...............................................................................................................31A.3.1Timing requirements..................................................................................................31A.3.1.1Point-to-point mode of operation..............................................................31A.3.1.2Multipoint mode of operation...................................................................33A.3.2Tolerable jitter and wander at inputs...........................................................................33A.3.3Output jitter..............................................................................................................33A.4Operation and maintenance......................................................................................................34Annex B (normative):Application of ETS 300 011 to the S reference point......................................37B.1Scope....................................................................................................................................37B.2Definitions...............................................................................................................................37B.3Conformance..........................................................................................................................37B.4Requirements..........................................................................................................................38B.4.1Timing considerations................................................................................................38B.4.2Jitter, general considerations.....................................................................................38B.4.3Frame alignment and CRC4 procedures......................................................................38B.5Interface wiring.......................................................................................................................38B.6Loopbacks required at S reference point...................................................................................38Annex C (normative):Conformance test principles for the user and the network side of the interface39C.1Scope and general information.................................................................................................39C.1.1Scope......................................................................................................................39C.1.2General information...................................................................................................39C.1.2.1Additional information to support the test..................................................39SIST ETS 300 011 E1:2003

Page 4ETS 300 011 : April 1992C.1.2.2Definitions and abbreviations...................................................................39C.1.3Connection of the simulator to the IUT.........................................................................40C.1.4Allocation of tests......................................................................................................40C.1.4.1General.................................................................................................40C.1.4.2Type of configuration requirements..........................................................40C.1.4.3Functional characteristics requirements....................................................41C.1.4.4Interface at 1544 Kbit/s requirements......................................................42C.1.4.5Interface at 2048 Kbit/s requirements......................................................43C.1.4.6Interface connector requirements.............................................................45C.1.4.7Interface wiring requirements..................................................................46C.1.4.8Power feeding requirements....................................................................46C.1.4.9PTNX interconnection requirements..........................................................46C.1.4.10Additional requirements for application at S reference point.......................46C.2Electrical characteristics tests..................................................................................................47C.2.1Bit rate when unsynchronized.....................................................................................47C.2.2Received and transmitted line code.............................................................................48C.2.2.1Received line code.................................................................................48C.2.2.2Transmitted line code..............................................................................48C.2.3Specifications at the output ports................................................................................48C.2.3.1Pulse shape and amplitude of a mark (pulse)............................................48C.2.3.2Peak voltage of a space (no pulse)..........................................................49C.2.3.3Ratio of the amplitudes of positive and negative pulses at the centre of thepulse interval..........................................................................................50C.2.3.4Ratio of the widths of positive and negative pulses at the nominal halfamplitude...............................................................................................51C.2.4Specifications at the input ports..................................................................................51C.2.4.1Return loss at the input port....................................................................51C.2.4.2Input port immunity against reflections......................................................52C.2.5Frame structure........................................................................................................54C.2.5.1Number of bits per timeslot.....................................................................54C.2.5.2Number of timeslots per frame................................................................54C.2.5.3Assignment of bits in timeslot 0................................................................54C.2.5.3.1Generation of frame alignment word.................................54C.2.5.3.2Sa bits...........................................................................55C.2.6Timeslot assignment..................................................................................................55C.2.7Timing considerations................................................................................................55C.2.7.1AIS recognition.......................................................................................55C.2.7.2Synchronisation......................................................................................56C.2.8Jitter........................................................................................................................56C.2.8.1Minimum tolerance to jitter and wander at inputs.......................................57C.2.8.2Output jitter............................................................................................58C.2.8.2.1Output jitter with jitter at the input supplying timing.............58C.2.8.2.2Output jitter at network side.............................................59C.2.9Tolerable longitudinal voltage......................................................................................60C.2.10Output signal balance................................................................................................62C.2.11Impedance towards ground........................................................................................62C.2.11.1Impedance towards ground of the receiver...............................................62C.2.11.2Impedance towards ground of the transmitter...........................................63C.3Functional characteristics tests.................................................................................................63C.3.1Test of signals sent by IUT.........................................................................................63C.3.1.1HDB3 coding and normal operational frame..............................................64C.3.1.2Remote alarm indication..........................................................................64C.3.1.3Alarm indication signal.............................................................................64C.3.1.4CRC error information.............................................................................64C.3.1.5Remote alarm indication and continuous CRC error indication....................64C.3.2States-matrix at the IUT.............................................................................................65C.3.2.1States-matrix at the IUT network side......................................................65C.3.2.2States-matrix at the IUT user side............................................................66SIST ETS 300 011 E1:2003

Page 5ETS 300 011 : April 1992C.4Interface procedures tests.......................................................................................................67C.4.1Codes for idle channels and idle slots.........................................................................68C.4.2Interframe (layer 2) time fill........................................................................................68C.4.3Frame alignment (without the test of CRC procedure)..................................................69C.4.4CRC multiframe alignment..........................................................................................70C.4.5CRC processing........................................................................................................71C.5Power feeding.........................................................................................................................72C.5.1Provision of power and feeding voltage.......................................................................72C.5.2Protection against short circuit...................................................................................72C.5.3Protection against overload........................................................................................73C.5.4Power consumption and interchange of wires..............................................................74Annex D (informative):Characteristics of loopbacks........................................................................75D.1Introduction.............................................................................................................................75D.2Characteristics of loopback at the network side.........................................................................75D.3Characteristics of loopbacks for primary rate customer installations............................................75Annex E (informative):Bibliography................................................................................................76History.............................................................................................................................................77SIST ETS 300 011 E1:2003

Page 6ETS 300 011 : April 1992Blank pageSIST ETS 300 011 E1:2003

Page 7ETS 300 011 : April 1992ForewordThis European Telecommunication Standard (ETS) was produced by the Transmission and Multiplexing(TM) Technical Committee of the European Telecommunications Standards Institute (ETSI).This ETS aims to meet urgent requirements of network operators and equipment manufacturers who aredesigning equipment to operate with an Integrated Services Digital Network (ISDN) primary rate accessuser-network interface. This ETS shall replace CEPT Recommendation T/L 03-14 (November 1987).This ETS is based upon CCITT Recommendation I.431 (1988) [9] and provides modifications and furtherrequirements to that base document. It also is affected by CCITT Recommendations G.703 [2], G.704 [3]and G.706 [4] (1988), and modifications and statements to these CCITT Recommendations are providedwithin this ETS.This ETS also takes into account requirements contained in ECMA Standard 104: "Physical layer at theprimary rate access interface between data processing equipment and private switching networks (1985)",which are given in Annex B.SIST ETS 300 011 E1:2003

Page 8ETS 300 011 : April 1992Blank pageSIST ETS 300 011 E1:2003

Page 9ETS 300 011 : April 19921ScopeThis European Telecommunication Standard (ETS) specifies requirements and test principles for the ISDN72048 kbit/s primary rate user-network interface including the physical, electrical and functionalcharacteristics and the information exchange with higher layers. Compliance with this ETS ensures that,with regard to layer 1 interface aspects, equipment for use with ISDN primary rate access is portablewithin countries that adhere to this ETS and, furthermore, that interworking with higher layer protocols forISDN is supported.This ETS is applicable to equipment having interface Ia or Ib for the connection to the ISDN primary rateuser-network interface intended to be installed on customers' premises. In accordance with CCITTRecommendation I.411 [10], this ETS is to be applied to interfaces at reference points S, T and S/T(coincident S and T) of the ISDN reference configuration.This ETS is applicable for ISDN channel arrangements as defined in CCITT Recommendation I.412 [11],as far as the primary rate at 2048 kbit/s is concerned.This ETS is based on CCITT Recommendation I.431 [9] and gives further requirements or modifications tothat Recommendation. Furthermore, this ETS identifies for each clause of CCITT Recommendation I.431[9] whether it is regarded as normative, informative or as not relevant in the sense of an ETS.This ETS also specifies, in Annex A, reference configurations and special requirements for application ofthis interface as a user-network interface for leased lines or as a user-user interface in particular forPrivate Telecommunications Network Exchange (PTNX) interconnections.Annex B specifies additional requirements for interfaces at reference point S.Annex C to this ETS specifies the relevant test principles to verify the requirements, and for testingconformance to this ETS. It is outside the scope of this ETS to define the static conformance requirementsan equipment has to meet for attachment approval to a public network.This ETS does not specify:-safety requirements;-interface or equipment overvoltage protection requirements;-immunity requirements against electromagnetic interferences;-emission limitation requirements.2Normative referencesThis ETS incorporates, by dated or undated reference, provisions from other publications. These normativereferences are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references subsequent amendments to, or revisions of, any of these publications apply to this ETSonly when incorporated in it by amendments or revision. For undated references the latest edition of thepublication referred to applies.[1]ETS 300 012 (1992): "Integrated Services Digital Network (ISDN); Basic rateuser-network interface, Layer 1 specification and test principles".[2]CCITT Recommendation G.703 (1988): "Physical/electrical characteristics ofhierarchical digital interfaces".[3]CCITT Recommendation G.704 (1988): "Synchronous frame structures used atprimary and secondary hierarchical levels".SIST ETS 300 011 E1:2003

Page 10ETS 300 011 : April 1992[4]CCITT Recommendation G.706 (1988): "Frame alignment and cyclic redundancycheck (CRC) procedures relating to basic frame structures defined inRecommendation G.704".[5]CCITT Recommendation O.151 (1988): "Error performance measuringequipment for digital systems at the primary bit rate and above".[6]ETS 300 125: "Integrated Services Digital Network (ISDN); User-networkinterface data link layer specification, Application of CCITT RecommendationsQ.920/I.440 and Q.912/I.441".[7]prEN 50096: "Integrated Services Digital Network (ISDN); Equipment with ISDNuser-network interface at basic and primary rate, EMC requirements".[8]Final draft prETS 300 046: "Integrated Services Digital Network (ISDN); Primaryrate access - safety and protection".[9]CCITT Recommendation I.431 (1988): "Primary rate user-network interface -Layer 1 specification".[10]CCITT Recommendation I.411 (1988): "ISDN user-network interfaces -Reference configurations".[11]CCITT Recommendation I.412 (1988): "ISDN user-network interfaces".[12]ISO/IEC 10173: "Information Technology Integrated Services Digital Network(ISDN Primary Access Connector at Reference Point S and T)".[13]ENV 41001 (1987): "ISDN Connector up to 8 pins and up to 2,048 M bit/s".[14]ETR 001: "Integrated Services Digital Network (ISDN); Customer accessmaintenance".[15]EN 60950 (1990): "Safety of information technology equipment includingelectrically operated business machines".SIST ETS 300 011 E1:2003

Page 11ETS 300 011 : April 19923DefinitionsFor the purpose of this ETS the following definitions, together with those given in Clause 3 of ETS 300 012[1] and in CCITT Recommendation I.411 [10] apply. Further definitions are given in Annex B.Terminal equipment (TE): an equipment providing an interface Ia.NOTE:This term is used in this ETS to indicate terminal-terminating aspects of TE1, TA andNT2 functional groups, where these have an Ia interface.Terminal equipment type 1 (TE1): this functional group includes functions belonging to the functionalgroup TE, and with an interface that complies with the ISDN user-network interface standard.Network termination (NT): an equipment providing interface IbNOTE:This term is used in this ETS to indicate network-terminating aspects of NT1 and NT2functional groups where these have an Ib interface.Network termination type 1 (NT1): this functional group includes functions broadly equivalent to layer 1(physical) of the OSI reference model. These functions are associated with the proper physical andelectromagnetic termination of the network. NT1 functions are:-Line transmission termination;-layer 1 maintenance functions and performance monitoring;-timing;-layer 1 multiplexing;-interface termination.Network termination type 2 (NT2): this functional group includes functions broadly equivalent to layer 1and higher layers of the CCITT Recommendation X.200 reference model. Private Automatic BranchExchanges (PABXs), local area networks and terminal controllers are examples of equipment orcombinations of equipment that provide NT2 functions. NT2 functions include:-layer 2 and 3 protocol handling;-layer 2 and 3 multiplexing;-switching;-concentration;-maintenance functions;-interface termination and other layer 1 functions.Terminal adapter (TA): an equipment with interface Ia and one or more auxiliary interfaces that allow non-ISDN terminals to be served by an ISDN user-network interface.Interface Ia: user side of the ISDN user-network interface for the primary rate access.Interface Ib: network side of the ISDN user-network interface for the primary rate access.SIST ETS 300 011 E1:2003

Page 12ETS 300 011 : April 19924AbbreviationsFor the purpose of this standard the following abbreviations apply:AISAlarm Indication SignalCCITTConsultative Committee on International Telegraphy and TelephonyCRCCyclic redundancy checkFCFault ConditionHDB3High-Density Bi-polar 3 (line code)ISPBXIntegrated Services Private Branch ExchangeIUTImplementation Under TestMPHManagement PrimitivesNOFNormal Operational FramesNTNetwork TerminationPABXPrivate Automatic Branch ExchangePH-AIPrimitive Active IndicationPH-DIPrimitive de-activate indicationPNTPrivate Network TerminationPTNPrivate Telecommunications NetworkPRBSPseudo-Random Bit SequencePTNXPrivate Telecommunications Network ExchangeRAIRemote Alarm IndicationTATerminal AdaptorTETerminal EquipmentFurther abbreviations relevant to the test definitions are given in Annex C, Clause C.4.5ConformanceConformance to this ETS can be claimed if the requirements contained in this ETS are complied with whentested according to the tests specified in Annex C.The only exceptions are the following options:-either CRC option 1 or CRC option 2 on the network side of the interface;-the capability of the user side of the interface to support the application as user-network interfacefor leased line or user-user interface (Annex A);-the application of the interface structures for different types of channels as defined in CCITTRecommendation I.412 [11];SIST ETS 300 011 E1:2003

Page 13ETS 300 011 : April 1992-the use of bit 2 of timeslot O not containing the frame alignment signal, according to CCITTRecommendation G.706 [4], paragraph 4.An equipment intended to be used at the S reference point shall conform to Annex B.An interface at TE intended to be used as a user-network interface for leased lines or as a user-userinterface shall meet the requirements of this ETS including those given in Annex A.6RequirementsThe requirements to this ETS are given in CCITT Recommendation I.431 [9], together with the followingstatements, modifications and additional requirements to that Recommendation given in table 1 of thisETS.References in CCITT Recommendation I.431 [9] to CCITT Recommendation I.604 should be read as toETR 001 [14] (which is a delta document to CCITT Recommendation I.604) and those to CCITTRecommendation I.451 should be read as to ETS 300 102 Part 1.As CCITT Recommendations I.431 [9], G.703 [2], G.704 [3] and G.706 [4] are only recommendations, it isnecessary to indicate the status of the Clauses for the purposes of this ETS, therefore tables 1 to 4, whichrefer to CCITT Recommendations I.431 [9], G.703 [2], G.704 [3] and G.706 [4] respectively, indicate thestatus of each Clause as defined below.Definitions:NNormative: Requirements with which it is necessary to comply in order to be ableto claim compliance with this ETS. Therefore, functions and features in Clausesof CCITT Recommendation I.431 [9], stated as being normative in this ETS, shallbe implemented and followed even if the text is given as a recommendation or anexample.IInformative: The text of this Clause is provided for information only. Titles forClauses and subclauses are marked as informative when the requirements aregiven in further subclauses.N/RNot relevant: This Clause is not relevant to this ETS.Notes under normative Clauses of these CCITT Recommendations are to be considered as informativeunless otherwise stated in the relevant table to this ETS.SIST ETS 300 011 E1:2003

Page 14ETS 300 011 : April 1992Table 1: Modifications and statements to CCITT Recommendation I.431 [9]ÚÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄ¿³Clause/

Title/comment
³Statement³³subclause³
³ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄ´³1
³Introduction
³ I
³³1.1
³Scope and field of application
³ I
³³2
³Type of configuration
³ I
³³2.1
³Point-to-point
³ N
³³2.2
³Location of interface
³ N
³
³The electrical characteristics apply to
³the interface points Ia and Ib of figure 1³
ÚÄÄ¿
ÚÄÄ¿
³TEÃÄÄ||ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ||ÄÄ´NT³
ÀÄÄÙ
ÀÄÄÙ
³Figure 1: Location of interfaces
NOTE: Ia is located at the input and
output ports of the TE.
Ib is located at the input and
output ports of the NT.
³³3
³Functional characteristics
³ I
³³3.1
³Summary of functions (layer 1)
³ N
³ ³the following note>
NOTE: This power feeding function uses ³
a separate pair of wires.
³³3.2
³Interchange circuits
³ N
³ ³3.2 with the following>
³The two wires of the pairs carrying the
³digital signal may be reversed
³³3.3
³Activation/deactivation
³ I
³³3.4
³Operational functions
³ I
³³3.4.1
³Definition of signals at the interface
³ N
³ ³relevant.>
³
³Contiguous CRC blocks with errors shall
³result in contiguous CRC error information³
³ ³subclause 3.4.1>
³continuedSIST ETS 300 011 E1:2003

Page 15ETS 300 011 : April 1992Table 1 (continued)ÚÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄ¿³Clause/

Title/comment
³Statement³³subclause³
³ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄ´³
³The detection algorithm for signals given ³
³in table 1/I.431 and others is defined as ³
³follows:
³- Normal operational frames: the algorithm³
shall be in accordance with CCITT Recom-³
mendation G.706 paragraphs 4.1.2 and 4.2³
³- Loss of frame alignment: the algorithm
shall be in accordance with CCITT Recom-³
mendation G.706 paragraph 4.1.1.
³- RAI: RAI is detected when both of the
two following conditions occur:
- frame alignment condition,
- reception of one bit A with binary
content ONE.
³- Loss of signal: the equipment shall as- ³
sume "loss of signal" when the incoming ³
signal amplitude is more than 20 dB
below the nominal output amplitude
defined in CCITT Recommendation G.703
for this interface for more than 1 ms.
NOTE: The detection of this event is
necessary if an implementation
cannot detect loss of frame
alignment in case of loss of
incoming signal.
³- AIS: AIS is detected when both of the
two following conditions occur:
- loss of frame alignment
- Reception of 512 bit periods
containing less than 3 binary
ZEROs (reference is made to CCITT
Recommendation 0.162 paragraph 3.3.2)³
³- CRC error information: reception of one ³
E bit set to ZERO according to
table 1/I.431.
³- RAI and continuous CRC error informa-
tion: this event is identified when A
bit set to ONE and E bit set to ZERO
are continuously received within a
persistence check time period of between³
10 ms and 50 ms.
³continuedSIST ETS 300 011 E1:2003

Page 16ETS 300 011 : April 1992Table 1 (continued)ÚÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄ¿³Clause/

Title/comment
³Statement³³subclause³
³ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
...

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