SIST EN 302 094-1 V1.1.3:2005
(Main)Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols; Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1; Part 1: Protocol specification
- Abstract
The Call Forwarding on Not Reachable (CFNRc) supplementary service enables a served user to have the network redirect to another user calls which are addressed to the served user's ISDN number for the phase 1 of CTM. The CFNRc supplementary service operate on all calls. The served user's ability to originate calls is in principle unaffected by the CFNRc supplementary service.
- Status
- Published
- Publication Date
- 31-Dec-2004
- Withdrawal Date
- 30-Sep-2003
- Technical Committee
- SPN - Services and Protocols for Networks
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jan-2005
- Due Date
- 01-Jan-2005
- Completion Date
- 01-Jan-2005
SIST EN 302 094-1 V1.1.3:2005 is the Slovenian adoption of ETSI EN 302 094-1 V1.1.3. Published by SIST, it specifies the stage 3 protocol for the Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1, using DSS1 and SS7 signalling at the T reference point or coincident S and T reference point.
It is intended for service providers, network operators, and equipment implementers that need to support call diversion when a cordless terminal is not reachable.
What does SIST EN 302 094-1 V1.1.3:2005 specify?
SIST EN 302 094-1 V1.1.3:2005 defines the protocol procedures and switching functions for CFNRc in CTM phase 1. It covers the signalling application for DECT-based mobility management and DECT access to GSM via ISDN, and it applies to equipment at either side of a T reference point or a coincident S and T reference point.
The document is organized into 14 clauses and two annexes. Part 1 is the protocol specification, and the foreword identifies Part 2 as the PICS proforma specification.
| Annex | What it covers |
|---|---|
| A | Informative signalling flows for CFNRc invocation and service operation |
| B | Normative ROSE operation and ASN.1 definitions for the encapsulated generic stimulus protocol |
What are the key requirements of SIST EN 302 094-1 V1.1.3:2005?
Provision, subscription, and service profile
Clause 6.1 says CFNRc is provided by prior arrangement with the service provider, and the network keeps a service profile for each subscriber. Withdrawal is done at the subscriber’s request or for service-provider reasons. In practice, operators need a subscriber record that controls which CFNRc features are active.
Table 1 fixes the subscription options used with CFNRc. The served user does not receive forwarded-call notification, the calling user may be notified of diversion without the diverted-to number, reminder notification on outgoing calls is not used, and the diverting number may be released to the diverted-to user. That tells implementers which service features to suppress or expose.
Call diversion limits and invocation
Table 2 sets the network provider option for the maximum number of diversions for a single call, with an upper limit of five. All diversion types count toward that limit. This matters when a call is forwarded through multiple networks or services.
Clause 9.2 says CFNRc is invoked after activation when an incoming call meets one of three exception conditions - congestion, pagingFailure, or radioConnectionFailure. In practice, CFNRc is the fallback when the cordless terminal cannot be reached on the air interface.
Registration and service control signalling
Clause 9.1 requires the served user to establish a call, then send an EncapsulatedStimulus invoke component inside a FACILITY message. No Called party number information element is provided. If the network completes the operation, it can return an EncapsulatedStimulus component with Display information; if not, it can return a failure indication the same way. This is the control path for registration, erasure, activation, deactivation, and interrogation.
Diversion handling and user notifications
Clauses 9.2.1 to 9.2.5 follow the diversion procedures of EN 300 207-1, with CFNRc-specific limits. The calling user may be notified of diversion, and the diverted-to user may be identified, but the summary condition is restricted when CFNRc is involved. The served user receives no forwarded-call notification and no reminder notification. In practice, the implementation must hide or limit some diversion details.
Interworking with private ISDNs
Clause 10 adapts the diversion procedures for private ISDN interworking. When CFNRc is involved, the reason for diversion is treated as "unknown" in the specified public/private cases. Clause 10.6 also restricts T reference point procedures to the whole private network, so network-wide rather than per-user requests are the rule in that case.
Coding and state handling
Clause 7 points to annex B for coding requirements, and clause 14 bases the SDL on ETS 300 403-2 with specific CFNRc exceptions. The INFO-REQUEST primitive uses FACILITY instead of INFORMATION in states U2 and U10. That is the part implementers use to build the message handling and state machine behaviour.
What terms does SIST EN 302 094-1 V1.1.3:2005 define?
- Call Forwarding on Not Reachable (CFNRc) - a supplementary service that forwards calls only when the served user’s cordless terminal is not reachable.
- Served user - the user to whom CFNRc is provided.
- Diverted-to user - the user who receives the redirected call, whether forwarding or deflection is used.
- Cordless Terminal Mobility (CTM) - the ability of a cordless terminal to move within and between Fixed Parts while still using network services.
- Fixed Part (FP) - the physical grouping that contains the cordless network elements between the local network and the air interface.
- Portable Part (PP) - the physical grouping between the user and the air interface.
- Portable identity - the identity used by mobility management services to identify a subscriber unambiguously.
Who uses SIST EN 302 094-1 V1.1.3:2005?
This standard is used by network operators and service providers that offer CFNRc on public ISDN or GSM access. It is also used by equipment vendors building switches, access nodes, and cordless terminals that must exchange DSS1 or SS7 signalling correctly.
Test engineers use it to validate registration, activation, invocation, and diversion behaviour, including FACILITY and ROSE encoding. It is also relevant to teams working on DECT, CTM, and private ISDN interworking.
Which standards are used with SIST EN 302 094-1 V1.1.3:2005?
- EN 301 144-1 - provides the CTM signalling application on the alpha interface and the SDL baseline used in clause 14.
- EN 300 207-1 - provides the core diversion supplementary service procedures reused for collection, notification, and diverted-to-user handling.
- EN 300 196-1 - provides the generic functional protocol framework and the ROSE/Facility encoding base used in annex B.
- EN 300 195-1 - defines supplementary service interactions.
- ETS 300 403-2 - provides the SDL diagrams used as the basis for the CFNRc state handling.
- ETS 300 788 - provides DECT access to GSM via ISDN functional capabilities and information flows.
- ITU-T I.411, I.210, I.130, I.112 - supply the ISDN interface, service, and vocabulary framework used by the standard.
What does the SIST EN 302 094-1 V1.1.3:2005 document contain?
The body covers service description, operational requirements, coding, state definitions, signalling procedures, interworking with private ISDNs, interactions with other networks, interactions with other supplementary services, parameter values, and SDL diagrams.
Annex A gives signalling flow examples for invocation and service operation. Annex B defines the ROSE operation and the ASN.1 structures for the encapsulated generic stimulus protocol, including the FACILITY-based carrying of keypad and display information.
The document also includes table-based subscription and network provider options, plus normal and exceptional procedures throughout the signalling clauses.
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Frequently Asked Questions
SIST EN 302 094-1 V1.1.3:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols; Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1; Part 1: Protocol specification". This standard covers: The Call Forwarding on Not Reachable (CFNRc) supplementary service enables a served user to have the network redirect to another user calls which are addressed to the served user's ISDN number for the phase 1 of CTM. The CFNRc supplementary service operate on all calls. The served user's ability to originate calls is in principle unaffected by the CFNRc supplementary service.
The Call Forwarding on Not Reachable (CFNRc) supplementary service enables a served user to have the network redirect to another user calls which are addressed to the served user's ISDN number for the phase 1 of CTM. The CFNRc supplementary service operate on all calls. The served user's ability to originate calls is in principle unaffected by the CFNRc supplementary service.
SIST EN 302 094-1 V1.1.3:2005 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 302 094-1 V1.1.3:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LJLWDOQHIntegrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols; Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1; Part 1: Protocol specification33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 302 094-1 Version 1.1.3SIST EN 302 094-1 V1.1.3:2005en01-januar-2005SIST EN 302 094-1 V1.1.3:2005SLOVENSKI
STANDARD
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)2ReferenceDEN/SPS-05178-1 (je090ie0.PDF)KeywordsCTM, CF, protocol, ISDN, DSS1, supplementaryserviceETSIPostal 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.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright 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 1999.All rights reserved.SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)3ContentsIntellectual Property Rights.5Foreword.51Scope.62References.63Definitions.74Abbreviations.95Description.106Operational requirements.106.1Provision and withdrawal.106.2Requirements on the calling user's network side.116.3Requirements on the served user's network side.116.4Requirements on the diverted-to user's network side.117Coding requirements.118State definitions.119Signalling procedures at the coincident S and T reference point.119.1Registration, erasure, activation, deactivation and interrogation.129.1.1Normal operation.129.1.2Exceptional procedure.129.2Invocation and operation.129.2.1Collection and analysis of diversion information at the calling network.129.2.1.1Normal operation.129.2.1.2Exceptional procedures.139.2.2Notification of diversion to the calling user.139.2.2.1Normal operation.139.2.2.2Exceptional procedures.139.2.3Identification of the diverted-to user to the calling user.139.2.3.1Normal operation.139.2.3.2Exceptional procedures.139.2.4Operation at the served user.139.2.4.1Normal operation.139.2.4.2Exceptional procedures.139.2.5Operation at the diverted-to user.139.2.5.1Normal operation.139.2.5.2Exceptional procedures.149.3Reminder notification to the served user.149.3.1Normal operation.149.3.2Exceptional procedures.1410Procedures for interworking with private ISDNs.1410.1Procedures where a call from the public ISDN is diverted within or beyond the private ISDN.1410.1.1Normal operation.1410.1.2Exceptional procedures.1410.2Presentation of a diverted call from a public ISDN to the private ISDN.1410.2.1Normal operation.1410.2.2Exceptional procedures.1410.3Procedures where a call from the private ISDN is diverted within or beyond the public ISDN.1410.4Presentation of a diverted call from a private ISDN to the public ISDN.1510.4.1Normal operation.1510.4.2Exceptional procedures.1510.5Procedures where a call from the public ISDN is diverted within or beyond the private ISDN and partialrerouteing takes place in the public ISDN.15SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)410.5.1Normal operation.1510.5.2Exceptional procedures.1510.6Procedures where a call from the public ISDN to the private ISDN is diverted by the public ISDN.1511Interactions with other networks.1512Interactions with other supplementary services.1613Parameter values (timers).1614Dynamic description (SDL diagrams).1614.1User side SDL process.1614.1.1Overlap Sending (U2) state.1614.1.2Active State (U10) state.1614.2Network side SDL Process.16Annex A (informative):Signalling flows.17Annex B (normative):ROSE operation for the encapsulated generic stimulus protocol.19Bibliography.21History.22SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)5Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available from the ETSI 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 guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee SignallingProtocols and Switching (SPS).The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No.one (DSS1) and Signalling System No. seven (SS7) protocols; Call forwarding on not reachable supplementary servicefor CTM phase 1, as described below:Part 1:"Protocol specification";Part 2:"Protocol Implementation Conformance Statement (PICS) proforma specification".National transposition datesDate of adoption of this EN:3 September 1999Date of latest announcement of this EN (doa):31 December 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 June 2000Date of withdrawal of any conflicting National Standard (dow):30 June 2000SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)61ScopeThe present document specifies the stage 3 of the Signalling application for the mobility management service for thephase 1 of Call Forwarding on Not Reachable (CFNRc) supplementary service. The mobility management servicefunctions include Cordless Terminal Mobility (CTM) for CTM phase 1 (DECT/GAP limitation) and DECT access toGSM via an ISDN user-network interface at the T reference point or coincident S and T reference point (as defined inITU-T Recommendation I.411 [4]) by means of the Digital Subscriber Signalling System No. one (DSS1) protocol.Stage three identifies the protocol procedures and switching functions needed to support a telecommunicationservice (see CCITT Recommendation I.130 [2]).The Call Forwarding on Not Reachable (CFNRc) supplementary service enables a served user to have the networkredirect to another user calls which are addressed to the served user's ISDN number. After the Call Forwarding on NotReachable (CFNRc) supplementary service has been activated, calls are forwarded only if the served user's cordlessterminal is not reachable. The Call Forwarding on Not Reachable (CFNRc) supplementary service operates on all calls.The served user's ability to originate calls is in principle unaffected by the Call Forwarding on Not Reachable (CFNRc)supplementary service.NOTE:Practically the served user's ability to originate calls is affected if there is radio congestion or if the serveduser's cordless terminal is for example out of radio coverage.The signalling application for phase 1 describes the mobility management procedures required to allow users of cordlessterminals to be mobile within and between networks. Whenever radio coverage is provided and the cordless terminal hasappropriate access rights, the user is able to make calls from and to receive calls at any location within the network.The signalling application for phase 1 is applicable to the telephony 3,1 kHz teleservice (ETS 300 111 [19]), speechbearer service (ETS 300 109 [17]) and 3,1 kHz audio bearer service (ETS 300 110 [18]).Further parts of EN 302 094 specify the method of testing required to identify conformance to the present document.The present document is applicable to equipment supporting the signalling application for the alpha interface or the betainterface, to be attached at either side of a T reference point and coincident S and T reference point when used as anaccess to the public ISDN or GSM.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDN".[2]CCITT Recommendation I.130 (1988): "Method for the characterization of telecommunicationservices supported by an ISDN and network capabilities of an ISDN".[3]ITU-T Recommendation I.210 (1993): "Principles of telecommunication services supported by anISDN and the means to describe them".[4]ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".[5]CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax NotationOne (ASN.1)".SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)7[6]CCITT Recommendation X.219 (1988): "Remote operations: Model, notation and servicedefinition".[7]ITU-T Recommendation X.880: "Information technology - Remote operations: Concepts, modeland notation".[8]EN 300 195-1 (V1.4): "Integrated Services Digital Network (ISDN); Supplementary serviceinteractions; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocolspecification".[9]EN 300 196-1 (V1.2): "Integrated Services Digital Network (ISDN); Generic functional protocolfor the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1)protocol; Part 1: Protocol specification".[10]EN 300 207-1 (V1.2): "Integrated Services Digital Network (ISDN); Diversion supplementaryservices; Digital Subscriber Signalling No. one (DSS1) protocol; Part1: Protocol specification".[11]ETS 300 403-2 (1995): "Integrated Services Digital Network (ISDN); Digital SubscriberSignalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic callcontrol; Part 2: Specification Description Language (SDL) diagrams".[12]ETS 300 788 (1997): "Digital Enhanced Cordless Telecommunications (DECT); Global Systemfor Mobile communications (GSM); Integrated Services Digital Network (ISDN); DECT access toGSM via ISDN; Functional capabilities and information flows".[13]EN 301 144-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling SystemNo. one (DSS1) and Signalling System No. 7 (SS7) protocols; Signalling application for themobility management service on the alpha interface; Part 1: Protocol specification".[14]EN 301 175 (V1.1): "Cordless Terminal Mobility (CTM); Phase 1; Service description".[15]EN 300 356-15: "Integrated Services Digital Network (ISDN); Signalling System No.7; ISDNUser Part (ISUP) version 3 for the international interface; Part 15: Diversion supplementaryservices [ITU-T Recommendation Q.732, clause 2 to 5 (1997), modified]".[16]ITU-T Recommendation X.680 Amendment 1 (04/95): "Information technology - Abstract SyntaxNotation One (ASN.1) - Specification of basic notation Amendment 1: Rules of extensibility".[17]ETS 300 109 (1992): Integrated Services Digital Network (ISDN); Circuit-mode 64 kbit/s 8 kHzstructured bearer service category usable for speech information transfer; Service description".[18]ETS 300 110 (1992): "Integrated Services Digital Network (ISDN); Circuit-mode 64kbit/s 8kHzstructured bearer service category usable for 3,1 kHz audio information transfer; Servicedescription".[19]ETS 300 111 (1992): "Integrated Services Digital Network (ISDN); Telephony 3,1 kHzteleservice; Service description".3DefinitionsFor the purposes of the present document, the following terms and definitions apply:basic call procedure: procedures by which a call (as an instance of a basic telecommunication service) is establishedand terminated.(Call) forwarding: general term applied to any functionality whereby a call is redirected automatically by the serviceprovider to another user. The forms of forwarding are: unconditional, whereby all calls are redirected; busy, wherebycalls encountering busy are redirected; no reply, whereby calls which are not answered within a time period areredirected; and, not reachable, whereby calls which are encountering not reachable are redirected.calling network: network to which the calling user is attached.calling user: user which initiated a call that has been diverted.SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)8cordless terminal: physical entity that provides access to the telecommunication service of a network via a radiointerface.cordless terminal mobility: ability of a cordless terminal to be mobile within and between Fixed Parts.NOTE 1:The mobility may be continuous while the terminal is accessing and using the telecommunication servicesoffered by the network, and it may include the capability of the networks to keep track of the cordlessterminal's location throughout the entire network.deflected-to number: ISDN number of the deflected-to user.deflected-to user: user to which the call is redirected as a result of deflection.deflecting number: ISDN number of the deflecting user.deflection: see "diversion".diversion: generic all forms of forwarding, including deflection whereby calls are redirected by the user instead of beinganswered.diverted-to user: either the forwarded-to user or the deflected-to user.diverted-to network: network to which the diverted-to user is attached.diverted-to number: ISDN number of the forwarded-to or the deflected-to user.diverting network: network to which the served user (diverting user) is attached.diverting number: ISDN number of the forwarding/deflecting user.fixed Part (FP): physical grouping that contains all elements in the cordless network between the local network and thecordless terminal air interface.forwarded-to user: user to whom the call is redirected as a result of forwarding.network: entity which provides the mobility management function and basic call functionality to the user.network operator: entity that provides the network operating elements and resources for the execution of the mobilitymanagement service.not reachable: status in the network when an incoming call is offered to a cordless terminal but the cordless terminal isout of radio coverage, switched off, or there is radio congestion.portable identity: identity by which a subscriber is known to the mobility management service providers and networkssupporting mobility management used for flexibility and security purposes.NOTE 2:The portable identity identifies a subscriber unambiguously. The portable identity does not need to beknown by subscriber.Portable Part (PP): physical grouping that contains all elements between the user and air interface.NOTE 3:Portable Part is a generic term that may describe one or several physical pieces.portable termination: logical group of functions that contains all of the CT processes and procedures on the portableside of the CT air interface.NOTE 4:A Portable radio Termination only includes elements that are defined in the relevant CT specification.public land mobile network: see ETS 300 788 [12].radio coverage: area in which cordless terminals may be used to establish and maintain telecommunication services viathe radio base stations supported by the network supporting the mobility management service.roaming: movement of the cordless terminal without a call in progress from one location area to another location areawithin the same and/or between different networks supporting the mobility management service.SIST EN 302 094-1 V1.1.3:2005
ETSIETSI EN 302 094-1 V1.1.3 (1999-09)9served user: user to which
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