Integrated Services Digital Network (ISDN); Circuit-mode multiple-rate unrestricted 8 kHz structured bearer service category; Service description

ISDN bearer service allowing the establishment of connections at rates at integer multiples of 64 kbit/s on a demand basis.

Digitalno omrežje z integriranimi storitvami (ISDN) – Kategorija vodovne večhitrostne prenosne storitve brez omejitve in 8 kHz za strukturirane signale – Opis storitve

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ETS 300 389 E1:2003
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.YRGRYQHIntegrated Services Digital Network (ISDN); Circuit-mode multiple-rate unrestricted 8 kHz structured bearer service category; Service description33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:ETS 300 389 Edition 1SIST ETS 300 389 E1:2003en01-december-2003SIST ETS 300 389 E1:2003SLOVENSKI

SIST ETS 300 389 E1:2003

EUROPEANETS 300 389TELECOMMUNICATIONDecember 1994STANDARDSource: ETSI TC-NAReference: DE/NA-010021ICS:33.080Key words:ISDN, bearerIntegrated Services Digital Network (ISDN);Circuit-mode multiple-rate unrestricted 8 kHzstructured bearer service categoryService descriptionETSIEuropean 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 1994. All rights reserved.SIST ETS 300 389 E1:2003

Page 2ETS 300 389: December 1994Whilst 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 Committee Support Dept." at the address shown on the title page.SIST ETS 300 389 E1:2003

Page 3ETS 300 389: December 1994ContentsForeword.51Scope.72Normative references.83Definitions.84Symbols and abbreviations.95Description.96Procedures.106.1Provision and withdrawal.106.2Normal procedures.116.2.1Originating the call (call establishment).116.2.2Indications during call establishment.126.2.3Terminating the call.126.3Exceptional procedures.126.3.1Situations at the calling user side.126.3.2Situations at the called user side.136.3.3Situations due to network conditions.136.3.4Retention of call information.137Intercommunication considerations.147.1Interworking between public ISDNs.147.2Interworking with non-ISDNs.147.3Interworking with private ISDNs.148Applicability of supplementary services.149Static description of the service using attributes.149.1Low layer attributes.149.1.1Information transfer attributes.149.1.2Access attributes.159.2High layer attributes.159.3General attributes.1510Dynamic description.15Annex A (informative):Time slot sequence integrity.16A.1Frame format.16A.2Inter-frame integrity.17A.3Intra-frame integrity.18Annex B (informative):Applicability of supplementary services to the circuit-mode multiple-ratebearer service category.19Annex C (informative):Bibliography.20History.21SIST ETS 300 389 E1:2003

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Page 5ETS 300 389: December 1994ForewordThis European Telecommunication Standard (ETS) has been produced by the Network Aspects (NA)Technical Committee of the European Telecommunications Standards Institute (ETSI).In accordance with CCITT Recommendation I.130 [1], the following three level structure is used todescribe the supplementary telecommunications services as provided by European publictelecommunications operators under the pan-European Integrated Services Digital Network (ISDN):-Stage 1:is an overall service description, from the user's standpoint;-Stage 2:identifies the functional capabilities and information flows needed to support the servicedescribed in stage 1; and-Stage 3:defines the signalling system protocols and switching functions needed to implement theservice described in stage 1.This ETS details the stage 1 aspects (overall service description) for the circuit-mode multiple-rate bearerservice category. The stage 2 and stage 3 aspects are detailed in a general form in ETS 300 350(endorsement of ITU-T Recommendation Q.71 (1993)) and ETS 300 403, respectively.This bearer service category is also known as the n x 64 kbit/s bearer service category.Proposed transposition datesDate of latest announcement of this ETS (doa):31 March 1995Date of latest publication of new National Standardor endorsement of this ETS (dop/e):30 September 1995Date of withdrawal of any conflicting National Standard (dow):30 September 1995SIST ETS 300 389 E1:2003

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Page 7ETS 300 389: December 19941ScopeThis standard defines the stage one of the circuit-mode multiple-rate bearer service category for thepan-European Integrated Services Digital Network (ISDN) as provided by European publictelecommunications operators. Stage one is an overall service description from the user's point of view(see CCITT Recommendation I.130 [1]), but does not deal with the details of the human interface itself.This standard defines the interworking requirements of private ISDNs with the public ISDN.In addition, this standard specifies the base functionality where the service is provided to the user via aprivate ISDN.The standard does not specify the additional requirements where the service is provided to the user via atelecommunications network that is not an ISDN but does include interworking requirements of othernetworks with the public ISDN.Charging principles are outside the scope of this standard.The values of the general attributes are outside the scope of this standard.The circuit-mode multiple-rate bearer service category provides unrestricted information transfer at integermultiples of 64 kbit/s between reference points. Each of these reference points can be either a Sreference point or coincident S and T reference points (see ITU-T Recommendation I.411 [2]).NOTE:Service providers can also provide information transfer with the same attributes wherethe reference point is the T reference point.This standard contains the procedures for the on-demand service variant of this bearer service category.The procedures for the permanent and the reserved service variants are outside the scope of thisstandard.This standard is applicable to the stage two and stage three standards for the ISDN circuit-modemultiple-rate bearer service category. The terms "stage two" and "stage three" are also defined in CCITTRecommendation I.130 [1]. Where the text indicates the status of a requirement (i.e. as strict command orprohibition, as authorisation leaving freedom, or as a capability or possibility), this shall be reflected in thetext of the relevant stage two and stage three standards.Furthermore, conformance to this standard is met by conforming to the stage three standards with thefield of application appropriate to the equipment being implemented. Therefore, no method of testing isprovided for this standard.SIST ETS 300 389 E1:2003

Page 8ETS 300 389: December 19942Normative referencesThis standard incorporates by dated or undated reference provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this standard only when incorporated in it by amendment or revision. For undated references thelatest edition of the publication referred to applies.[1]CCITT Recommendation I.130 (1988): "Method for the characterisation oftelecommunication services supported by an ISDN and network capabilities ofan ISDN".[2]ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - referenceconfigurations".[3]ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDNs".[4]ITU-T Recommendation I.210 (1993): "Principles of telecommunication servicessupported by an ISDN and the means to describe them".[5]CCITT Recommendation E.164 (1991): "Numbering plan for the ISDN era".[6]ITU-T Recommendation I.221 (1993): "Common specific characteristics ofservices".[7]ITU-T Recommendation I.140 (1993): "Attribute technique for thecharacterization of telecommunication services supported by an ISDN andnetwork capabilities of an ISDN".[8]CCITT Recommendation I.220 (1988): "Common dynamic description of basictelecommunication services".[9]ETS 300 345: "Integrated Services Digital Network (ISDN); Interworkingbetween public ISDNs and private ISDNs for the provision oftelecommunications services General aspects".[10]CCITT Recommendation I.231.10: "Circuit-mode multiple-rate unrestricted8 kHz structured bearer service category".3DefinitionsFor the purpose of this standard, the following definitions apply:bearer service: See ITU-T Recommendation I.112 [3], § 2.2, definition 202.basic access: See ITU-T Recommendation I.112 [3], § 2.4, definition 425.Integrated Services Digital Network (ISDN): See ITU-T Recommendation I.112 [3], § 2.3 definition 308.ISDN number: A number conforming to the numbering plan and structure specified in CCITTRecommendation E.164 [5].network operator: Entity which provides the network operating elements and resources for the executionof this bearer service.primary rate access: See ITU-T Recommendation I.112 [3], § 2.4, definition 426.retention timer: This timer specifies the amount of time that the network retains all of the informationsupplied by the calling user when the call encounters busy or is terminated.SIST ETS 300 389 E1:2003

Page 9ETS 300 389: December 1994service; telecommunications service: See ITU-T Recommendation I.112 [3], § 2.2, definition 201.service provider: Entity which offers this bearer service subscription. The network operator may be theservice provider.supplementary service: See ITU-T Recommendation I.210 [4], § 2.4.Time Slot Sequence Integrity (TSSI): TSSI characterizes the ability of the ISDN to maintain the relativeposition of every time slot within a frame (intra-frame integrity) and between consecutive frames(inter-frame integrity) from one basic access or primary rate access to the other basic access or primaryrate access. The TSSI characteristics are described in annex A.user determined user busy: See ITU-T Recommendation I.221 [6], § and abbreviationsISDNIntegrated Services Digital NetworkLANLocal Area NetworkTSSITime Slot Sequence Integrity5DescriptionThe circuit-mode multiple-rate bearer service category supports unrestricted information transfer rates atinteger (N) multiples of B-channels up to the maximum rate of the basic access or primary rate access.The circuit-mode multiple-rate bearer service category shall apply to the basic access and to the primaryrate access.User information shall be transferred over multiple B-channels. Signalling shall be provided over aD-channel.For the basic access, the value of N shall be 2.For the primary rate access, N shall be any value in the range of 2 to 30. As a service provider option, thesupport of the circuit-mode multiple-rate bearer service category can be restricted to the use of one ormore values of N.NOTE 1:It is recommended that the network, as a minimum, supports N=2, 6, 24 and 30 for theprimary rate access.For a specific call, all the B-channels involved in the call shall be restricted to the same basic access orprimary rate access.Any free B-channel can be assigned to the call.For the circuit-mode multiple-rate bearer service category, more than one call on an interface can be inprogress simultaneously, providing that the combined values of N do not exceed the value of thesubscription option for the maximum number of B-channels available for this bearer service category.NOTE 2:This subscription option may be used in order to reserve capacity for other bearerservices or teleservices to be used on the same basic access or primary rate access.To maintain the order of data submitted by one user when that data is delivered to the other user, theTime Slot Sequence Integrity (TSSI) channel structure shall be supported by this bearer service category.SIST ETS 300 389 E1:2003

Page 10ETS 300 389: December 1994The circuit-mode multiple-rate bearer service category shall allow communication in both directionsbetween two users (e.g. terminals, private telecommunication network exchanges) in a point-to-pointcommunication configuration via the ISDN using digital signals over multiple 64 kbit/s channels.The circuit-mode multiple-rate bearer service category can be used to support various applications.Examples include:EXAMPLE 1:File and data transfer applications.EXAMPLE 2:Transparent access to frame mode (frame relay or frame switching) networks.EXAMPLE 3:Interconnection of Local Area Networks (LANs).EXAMPLE 4:Audio-visual applications.6Procedures6.1Provision and withdrawalThe circuit-mode multiple-rate bearer service category shall be provided after prior arrangement with theservice provider.The circuit-mode multiple-rate bearer service category can be provided on an ISDN number basis, or canbe provided to the whole interface.NOTE:It should be noted that in this context an interface may consist of one or more basicaccesses and/or primary rate accesses.As a service provider option, the circuit-mode multiple-rate bearer service c

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