SIST ETS 300 171 E1:2005
(Main)Private Telecommunication Network (PTN); Specification, functional models and information flows; Control aspects of circuit mode basic services
Private Telecommunication Network (PTN); Specification, functional models and information flows; Control aspects of circuit mode basic services
Stages 1 & 2 for basic call. See ENV41005 for definition of stages 1 & 2.
Zasebno telekomunikacijsko omrežje (PTN) – Specifikacija, funkcijski modeli in informacijski pretoki - Vidiki krmiljenja za vodovne osnovne storitve
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zasebno telekomunikacijsko omrežje (PTN) – Specifikacija, funkcijski modeli in informacijski pretoki - Vidiki krmiljenja za vodovne osnovne storitvePrivate Telecommunication Network (PTN); Specification, functional models and information flows; Control aspects of circuit mode basic services33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:ETS 300 171 Edition 1SIST ETS 300 171 E1:2005en01-maj-2005SIST ETS 300 171 E1:2005SLOVENSKI
STANDARD
SIST ETS 300 171 E1:2005
EUROPEANETS 300 171TELECOMMUNICATIONDecember 1992STANDARDSource: ETSI TC-ECMAReference: ECMA-142ICS:33.080Key words:PTN, BCSD, ECMA-142Private Telecommunication Network (PTN);Specification, functional models and information flowsControl aspects of circuit mode basic servicesETSIEuropean 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 300 171 E1:2005New presentation - see History box
Page 2ETS 300 171: December 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 Committee Support Dept." at the address shown on the title page.SIST ETS 300 171 E1:2005
Page 3ETS 300 171: December 1992ContentsForeword.71Scope.92References.103Definitions and acronyms.103.1Definitions.103.1.1Service.103.1.2Call.103.1.3Network call control entity.103.1.4User.103.1.5PTN user.103.2Acronyms.104PTN Service Provision.114.1Bearer Services.114.2Teleservices.114.3Control and signalling.124.4Interworking Considerations.124.5Service Model.124.6Service Attributes.135.Circuit mode 64 kbit/s unrestricted 8 kHz structured bearer service category.145.1Description.145.2Interworking Considerations.155.2.1Interworking with a public ISDN.155.2.2Interworking with networks supporting only a restricted digital informationtransfer capability.155.2.3Interworking with analogue networks.155.3Service attributes.165.3.1Dominant information transfer attributes.165.3.2Secondary information transfer attributes.165.3.3Access attributes.166Circuit mode 64 kbit/s 8 kHz structured bearer service category Usable for speech informationtransfer.166.1Description.166.2Interworking Considerations.176.2.1Interworking with a public ISDN.176.2.2Interworking with analogue networks.176.2.3Encoding law conversion.176.3Service attributes.176.3.1Dominant information transfer attributes.176.3.2Secondary information transfer attributes.186.3.3Access attributes.187Circuit mode 64 kbit/s 8 kHz structured bearer service category usable for 3,1 kHz audioinformation transfer.187.1Description.187.2Interworking Considerations.197.2.1Interworking with a public ISDN.197.2.2Interworking with analogue networks.197.2.3Encoding law conversion.197.3Service attributes.197.3.1Dominant information transfer attributes.197.3.2Secondary information transfer attributes.19SIST ETS 300 171 E1:2005
Page 4ETS 300 171: December 19927.3.3Access attributes.208Teleservices.208.1Telephony Teleservice.208.2Teletex Teleservice.218.3Telefax 4 Teleservice.218.4Videotex Teleservice.229Demand service procedures for services within a PTN.229.1Provision of Services.229.2Normal Procedures.229.2.1Call establishment at the calling PTN user.229.2.2Call establishment at the called PTN user.249.2.3Terminating the service (call release).259.3Exceptional Procedures / Unsuccessful Outcome.259.3.1Failure situations due to calling PTN user error.259.3.2Failure situations due to called PTN user state.259.3.3Failure situations due to network conditions.259.3.4Rejection of the call by the called PTN user.259.3.5Absence of response from called PTN user.2610Interworking.2610.1General Interworking Considerations.2610.1.1Incoming Calls.2610.1.2Outgoing Calls.2610.1.3PTN Transit Calls.2610.2Demand service interworking with a public ISDN.2710.2.1Receipt of service request from a public ISDN.2710.2.2Sending a service request to a public ISDN.2710.2.3Receipt of a service response from public ISDN.2710.2.4Sending a service response to a public ISDN.2811Dynamic Description.2812Functional model.3012.1Functional model description.3012.2Description of the functional entities.3112.2.1Call Control Agent functional entity.3112.2.1.1Originating CCA functional entity.3212.2.1.2Destination CCA functional entity.3212.2.2Call Control functional entity.3212.2.2.1Originating CC functional entity.3312.2.2.2Destination CC functional entity.3312.2.2.3Transit CC functional entity.3312.2.2.4Incoming and Outgoing Gateway CC functional entities.3413Definition of information flows.3413.1Conventions used within the description of information flows.3413.1.1Convention for the description of mandatory or optional information.3413.1.2Convention for the naming of information flows.3513.2SETUP.3513.3REPORT.3913.4CHANNEL_ACKNOWLEDGE.4013.5CHANNEL_CONNECT.4013.6DISCONNECT.4013.7RELEASE.4013.8INFORMATION.4013.9SETUP_REJECT.4114Information flow sequences.4114.1Functional Entity Actions.4114.1.1Originating CCA functional entity.4114.1.2Originating CC functional entity.42SIST ETS 300 171 E1:2005
Page 5ETS 300 171: December 199214.1.3Transit CC functional entity.4314.1.4Destination CC functional entity.4414.1.5Destination CCA functional entity.4514.1.6Incoming gateway CC functional entity.4514.1.7Outgoing gateway CC functional entity.4714.2Non-automatic Call Establishment.4814.3Automatic Answering.4914.4Unsuccessful calls with the provision of tones and announcements.5014.5Unsuccessful calls without the provision of tones and announcements.5114.6Incoming interworking with a non-ISDN.5214.7Outgoing interworking with a non-ISDN.5314.8Outgoing interworking with overlap sending.5414.9Basic call clearing.5514.10Incoming interworking with a public ISDN.5614.11Outgoing interworking with a public ISDN.5715SDL diagrams for functional entities.5815.1Originating CCA functional entity SDL diagrams.5815.1.1Originating CCA states used in SDL diagrams.5815.1.2Originating CCA SDL diagrams.5915.2Originating CC functional entity SDL diagrams.6315.2.1Originating CC states used in SDL diagrams.6315.3Transit CC functional entity SDL diagrams.7015.3.1Transit CC states used in SDL diagrams.7015.4Destination CC functional entity SDL diagrams.7615.4.1Destination CC states used in SDL diagrams.7615.5Destination CCA functional entity SDL diagrams.8315.5.1Destination CCA states used in SDL diagrams.8315.5.2Destination CCA SDL diagrams.8416Allocation of functional entities to physical entities.87Annex A (informative):Relationship to corresponding public ISDN Standards.88Annex B (informative):Other references.89History.90SIST ETS 300 171 E1:2005
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Page 7ETS 300 171: December 1992ForewordThis European Telecommunication Standard (ETS) has been produced by the European ComputerManufacturers Association (ECMA) on behalf of its members and those of the EuropeanTelecommunications Standards Institute (ETSI).This ETS is one of a series of Standards defining services and signalling protocols applicable to PrivateTelecommunication Networks (PTNs) incorporating one or more interconnected exchanges. The seriesuses the ISDN concepts as developed by CCITT and is also within the framework of standards for opensystems interconnection as defined by ISO.This particular ETS contains specifications of basic services.Service specifications are produced in three stages, according to the method described in ENV 41005,which is based on the method used by CCITT Recommendation I.130 and Recommendation Q.65 andETSI. This Standard contains the Stage 1 and Stage 2 specifications of the services. Stage 1 (clauses 5to 11) describes the services as seen by users of PTNs. Clauses 9,10 and 11 describe the commonaspects of the services and clauses 5,6,7 and 8 describe those aspects which are service dependent.Stage 2 (clauses 12 to 16) identifies the functional entities involved in the basic services and theinformation flows between them. Stage 3, the definition of the networking and access signalling protocolsto support the basic services, will appear in separate ETSs.This ETS was produced by ECMA using the ECMA guidelines for the production of ETSs and using theECMA stylesheet. In order to avoid undue delays in the publication of this ETS it has been agreed that thisETS will not be converted to the ETSI stylesheet.SIST ETS 300 171 E1:2005
Page 8ETS 300 171: December 1992Blank pageSIST ETS 300 171 E1:2005
Page 9ETS 300 171: December 19921ScopeThis Standard specifies control aspects of standardized circuit mode services which may be supported byPrivate Telecommunication Networks (PTNs). This Standard contains the Stage 1 and Stage 2specifications of these services.Definition of signalling protocols at Stage 3 is guided and constrained by the Stage 1 and Stage 2specifications , and therefore this Standard is concerned mainly with the control aspects of services. Theproperties of the user information are described for the different basic services which have to becontrolled. Detailed requirements of user information protocols and switching functions are outside thescope of this Standard.NOTE 1:The services specified are compatible with the equivalent services specified by CCITT and ETSI for publicISDNs. CCITT specifications of these services are to be found in Recommendations I.220, I.230, I.231(Stage 1), Q.71 (Stage 2), I.240, and I.241.This Standard applies to the following bearer services:-Circuit Mode 64 kbit/s Unrestricted 8 kHz Structured Bearer Service Category;-Circuit Mode 64 kbit/s 8 kHz Structured Bearer Service Category Usable for Speech InformationTransfer;-Circuit Mode 64 kbit/s 8 kHz Structured Bearer Service Category Usable for 3,1 kHz AudioInformation Transfer.The following Teleservices are supported by these bearer services:-Telephony Teleservice;-Teletex Teleservice;-Telefax 4 Teleservice;-Videotex Teleservice.This Standard specifies the dynamic procedures for the support of these Teleservices within a PTN. Thedefinition of these Teleservices is beyond the scope of this Standard.Negotiation of service at call establishment time and change of service during a call are outside the scopeof this Standard.A Stage 3 Standard shall be in conformance with the Stage 1 and Stage 2 specifications contained in thisStandard, if the signalling protocols and equipment behaviour specified in the Stage 3 Standard arecapable of being used in a PTN which supports any or all of the basic services specified in this Standard.In particular, the Stage 3 Standards shall be adequate for the support of:-common aspects of the control of basic services, as seen by the PTN user and the interworkingwith the ISDN, as specified in clauses 9 and 10;-the control of the individual basic services specified in clauses 5, 6, 7 and 8;-the functional entities, functional entity allocations and information flows identified in clauses 12, 13,14 and 16.SIST ETS 300 171 E1:2005
Page 10ETS 300 171: December 19922ReferencesETS 300 189 (1992)Private Telecommunication Network (PTN); Addressing.ENV 41005 (1992)Method for the specification of basic and supplementary services of privatetelecommunication networks.ENV 41007-1 (1991)Definition of terms in private telecommunication networks, Part 1: definition ofgeneral terms.ETS 300 089 (1991)Integrated Services Digital Network (ISDN); Calling Line IdentificationPresentation (CLIP) supplementary service, Service description.ETS 300 062 (1991)Integrated Services Digital Network (ISDN); Direct Dialling In (DDI)supplementary service, Service description.ETS 300 094 (1991)Integrated Services Digital Network (ISDN); Connected Line IdentificationPresentation (COLP) supplementary service, Service description.CCITT Recommendation I.112Vocabulary of terms for ISDNs.3Definitions and acronymsThe special terminology defined in ENV 41007-1 and CCITT Recommendation I.112 applies. If there isconflict, the definitions in ENV 41007-1 shall take precedence. For the purpose of this Standard thefollowing further definitions apply.3.1Definitions3.1.1ServiceUnless otherwise stated, the term "service" shall mean "basic telecommunication service".3.1.2CallThe instance of the use of a service.3.1.3Network call control entityThe collection of network functions concerned with the control of services, as opposed to functionsconcerned with the transfer of user information.3.1.4UserAn entity which uses telecommunication services offered by a network, and which therefore directly orindirectly uses the services of the Network Layer.3.1.5PTN userAn entity which uses telecommunication services offered by a PTN, and which therefore directly orindirectly uses the services of the Network Layer.3.2AcronymsCC Clearing CauseCC Call Control generic functional entityCCA Call Control Agent generic functional entityCH Call HistoryCI Channel IdentifierCNConnected NumberSIST ETS 300 171 E1:2005
Page 11ETS 300 171: December 1992CS Connected SubaddressCT Connection TypeDC Destination CategoryDN Destination NumberDS Destination SubaddressDT Date/TimeFE functional entityISDN Integrated Services Digital NetworkISO International Organisation for StandardizationNC Number complete indicationOC Originating CategoryON Originating NumberOS Originating SubaddressOSI Open Systems InterconnectionPSTN Public Switched Telephone NetworkPTN Private Telecommunication NetworkPTNX Private Telecommunication Network ExchangeRT Report TypeSDL Specification and Description LanguageTE Terminal Equipment4PTN Service ProvisionBasic services within a PTN consist of bearer services and teleservices. A bearer service is defined onlyup to a certain layer, in any case no higher than Layer 3. The definition of a teleservice also encompassesthe higher layers up to Layer 7 (although some of the layers may be empty or not specified, as withTelephony, for example).The basic services defined in this document correspond to the circuit mode basic services defined byETSI.4.1Bearer ServicesPTN circuit mode bearer services provide a means of transferring information between users at PhysicalLayer level. Layers above Layer 3 are not defined. The provision of bearer services involves only low layerfunctions and so a bearer service can support a variety of high layer protocols.A circuit mode bearer service provides a connection (at the Physical Layer) for the conveyance of userinformation. Each switching point intervenes only at the Physical Layer. This gives a constant bit rate andfixed delays, which are very close to the inherent delays of the transmission media.4.2TeleservicesThe provision of a teleservice involves high layer functions, generally using the underlying low layercapabilities of bearer services. A PTN can support a teleservice by supporting a bearer service having thesame capabilities as those required by the teleservice and by satisfying any special control requirementsof the teleservice. The provision of high layer functions in support of a teleservice is not a necessary partof a PTN and is beyond the scope of this Standard.When requesting a teleservice from a PTN, the user has to explicitly indicate the bearer capabilitiesrequired in the same way as when a bearer service is requested. In addition, an indication of theteleservice required is provided by the PTN user, primarily for passing the indication through the networkto the called PTN user in order to allow compatibility checking. A PTN may optionally make use of thisinformation for purposes such as barring certain teleservices to certain PTN users, or for the provision oractivation of supplementary services on a per teleservice basis, e.g., call forwarding. Any use of thisinformation by a PTN is outside the scope of, but is not precluded by, this Standard.SIST ETS 300 171 E1:2005
Page 12ETS 300 171: December 19924.3Control and signallingIn order for information transfer to take place, an information connection must exist between the PTNusers concerned. A demand service involves the establishment and release of information connectionsaccording to the demands of users. From the point of view of users, calls have to be established andreleased, and this involves call control functions. Call control requires knowledge of the properties of theuser information to be transferred in order to provide appropriate capabilities.In general, more than one network element (e.g., PTNX, terminal) is involved in a call, and therefore callcontrol is distributed. Therefore call control information needs to be conveyed between network elements.The conveyance of this information is a function of signalling (see ECMA TR/44).PTN services use signalling, information which is carried over a dedicated logical connection, separatefrom the connection established for conveying user information. In the case of circuit mode bearerservices, the signalling connection is by necessity carried on a separate physical channel from theinformation channel (out-of-band signalling).NOTE 2:The possible use of the signalling connection also to provide user-to-user information transfer is thefunction of the User-to-User Signalling supplementary service, which is outside the scope of this Standard.4.4Interworking ConsiderationsIn general, interworking between a PTN bearer service and a bearer service provided by another networkrequires interworking functions, both for information transfer and for signalling.When interworking with the same service in a public ISDN, the interworking function for informationtransfer is null. However, interworking has an impact on signalling.4.5Service ModelThis Standard uses the following model in order to specify services.The Network Layer provides the bearer capabilities necessary for the support of bearer services andteleservices. A PTN user accesses the Network Layer service through Network Service Access Points(NSAP) and requests the Network Layer to provide the bearer capabilities necessary for the support of thebearer services or teleservices. An NSAP is identifiable by an address, which in a PTN is generally in theform of a PTN number, or of the concatenation of a PTN number and a subaddress. For addressingrequirements see ETS 300 189.The Network Layer incorporates functions for the control of calls and functions for the transfer of userinformation. This Standard views control functions as services being provided by a Network Call Controlentity, which are accessible through service acces
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