SIST EN 301 133 V1.1.1:2003

• Abstract:

  Stage 1 description of the supplementary service: Selective call forwarding services (Unconditional, busy and no reply)

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 301 133 V1.1.1 (1998-10) - Integrated Services Digital Network (ISDN); Selective Call Forwarding (SCF) supplementary services (unconditional, busy and no reply); Service description

SIST EN 301 133 V1.1.1:2003 is the Slovenian adoption of ETSI EN 301 133 V1.1.1 for Integrated Services Digital Network (ISDN) Selective Call Forwarding (SCF) supplementary services. It gives a stage 1 service description from the user’s point of view, showing how a served user can forward selected incoming calls to a chosen destination under unconditional, busy, or no reply conditions.

What does SIST EN 301 133 V1.1.1:2003 specify?

SIST EN 301 133 V1.1.1:2003 specifies the SCF supplementary service for the pan-European ISDN, including interworking with private ISDNs and the base functionality when the service is offered through a private ISDN. It is a service description, so it tells you what the service does and how users and networks handle it, not the low-level signalling implementation.

The document is organized into:

• Scope
• References
• Definitions and abbreviations
• Description
• Procedures
• Intercommunication considerations
• Interaction with other supplementary services
• Interaction with other services

In practice, that means the document is the place to check whether SCF fits your service model, but not the place for charging rules or detailed human-interface design.

What are the key requirements of SIST EN 301 133 V1.1.1:2003?

Service model and screening

SIST EN 301 133 V1.1.1:2003 defines SCF as an incoming call management feature for basic access and primary rate access. A served user can set up one or more screening lists that decide whether calls are forwarded based on calling number conditions.

The screening list can use complete or partial numbers in local, national, or international format, and forwarding can be explicit or implicit. In practice, this means a user can forward only selected callers, or forward everyone except selected callers.

Provision, activation and control

SIST EN 301 133 V1.1.1:2003 says the service is provided by prior arrangement with the service provider. The service provider can offer options for the number of screening lists per access and the number of entries per screening list, with values chosen by the network operator within the stated ranges.

Activation requires the forwarding type - unconditional, busy, or no reply - and, when relevant, the screening list identification. Multiple activations are allowed, so different calling identities or basic services can point to different forwarded-to numbers. This matters operationally because a customer can route different callers to different destinations without changing the original number.

Deactivation, interrogation and exceptions

SIST EN 301 133 V1.1.1:2003 allows deactivation of one activation, all activations for one forwarding type, or replacement of an existing activation by overwriting it. Interrogation returns the status of the service, the active screening lists, their priority, and the forwarded-to number where relevant.

The exceptional procedures list typical rejection causes such as no subscription, invalid screening list identification, invalid forwarded-to number, use of the served user’s own number, missing forwarding type, or insufficient information. For implementers, this is the checklist for validating customer requests before the network accepts them.

Interworking and service interaction

SIST EN 301 133 V1.1.1:2003 aligns SCF with the related Call Forwarding service descriptions for unconditional, busy, and no reply forwarding. It also gives interaction rules with call waiting, call hold, number identification services, closed user group, completion services, diversion services, outgoing call barring, and message waiting indication.

These rules matter because SCF can coexist with other features and the network must know which service takes priority. For example, message waiting indication is never diverted, and outgoing call barring can block a forwarded-to destination.

What terms does SIST EN 301 133 V1.1.1:2003 define?

• served user - the called user to whom SCF is provided.
• screening list - a set of conditions that says whether a call is forwarded or not forwarded.
• explicit forwarding - forwarding all calls from specified calling numbers.
• implicit forwarding - forwarding all calls except calls from specified calling numbers.
• ISDN number - a number following the E.164 numbering plan.
• basic access - an ISDN access type defined in ITU-T Recommendation I.112.
• primary rate access - another ISDN access type defined in ITU-T Recommendation I.112.
• CLI - Calling Line Identity, used to identify the calling party number.

Who uses SIST EN 301 133 V1.1.1:2003?

SIST EN 301 133 V1.1.1:2003 is used by ISDN service providers, network operators, switch and feature designers, and telecom engineers who configure supplementary services. Quality teams and buyers use it to check what SCF is supposed to do, especially how screening lists, forwarding types, and service interactions are handled.

It is also relevant when specifying private ISDN interworking, because the document states how SCF relates to public ISDN and to other network environments at the service-description level.

Which standards are used with SIST EN 301 133 V1.1.1:2003?

• CCITT Recommendation I.130 - the stage model for telecommunication services, including the meaning of stage 1, 2 and 3.
• ITU-T Recommendation I.112 - vocabulary for ISDN terms, including ISDN access definitions.
• ITU-T Recommendation I.210 - principles for describing ISDN telecommunication services.
• ITU-T Recommendation E.164 - the numbering plan used for ISDN numbers.
• ETS 300 200 - the companion service description for Call Forwarding Unconditional.
• ETS 300 199 - the companion service description for Call Forwarding Busy.
• ETS 300 201 including A1 - the companion service description for Call Forwarding No Reply.
• EN 301 134 - used for Completion of Calls on No Reply interactions.
• ETS 300 345 - gives general interworking aspects between public ISDNs and private ISDNs.

What does the SIST EN 301 133 V1.1.1:2003 document contain?

SIST EN 301 133 V1.1.1:2003 contains a stage 1 service description, not a testing standard. The foreword places it in the three-stage ETSI model and states that conformance is met through the relevant stage 3 standards.

The document includes the service definition, provision and withdrawal rules, activation and deactivation procedures, interrogation responses, rejection cases, interworking with non-ISDN and private ISDNs, and service interaction rules. It also points to the related call forwarding service descriptions that supply the actual forwarding mechanics.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digitalno omrežje z integriranimi storitvami (ISDN) – Dopolnilne storitve podaje selektivnih klicev (brezpogojna, v primeru zasedenosti, ko ni odziva) – Opis storitveIntegrated Services Digital Network (ISDN); Selective Call Forwarding (SCF) supplementary services (unconditional, busy and no reply); Service description33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 133 Version 1.1.1SIST EN 301 133 V1.1.1:2003en01-december-2003SIST EN 301 133 V1.1.1:2003SLOVENSKI
STANDARD
EN 301 133 V1.1.1 (1998-10)European Standard (Telecommunications series)Integrated Services Digital Network (ISDN);Selective Call Forwarding (SCF) supplementary services(unconditional, busy and no reply);Service descriptionSIST EN 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)2ReferenceDEN/NA-020008 (aho00ico.PDF)KeywordsISDN, stage 1, supplementary service, SCFETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail]://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 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)3ContentsIntellectual Property Rights.5Foreword.51Scope.62References.62.1Normative references.62.2Informative references.73Definitions and abbreviations.73.1Definitions.73.2Abbreviations.84Description.85Procedures.85.1Provision and withdrawal.85.2Normal procedures.95.2.1Activation, deactivation and registration.95.2.1.1Activation.95.2.1.2Deactivation.95.2.1.3Registration.105.2.2Erasure.105.2.3Invocation and operation.105.2.4Interrogation.105.3Exceptional procedures.115.3.1Activation, deactivation and registration.115.3.1.1Activation.115.3.1.2Deactivation.115.3.1.3Registration.115.3.2Erasure.115.3.3Invocation and operation.125.3.4Interrogation.126Intercommunication considerations.126.1Interworking with non-ISDN.126.2Interworking with private ISDNs.127Interaction with other supplementary services.127.1Advice of charge services.127.2Call waiting.127.3Call hold.127.4Explicit call transfer.137.5Number identification services.137.5.1Calling line identification presentation.137.5.2Calling line identification restriction.137.5.3Connected line identification presentation.137.5.4Connected line identification restriction.137.6Closed user group.137.7Call completion services.137.7.1Completion of calls to busy subscriber.137.7.2Completion of calls on no reply.137.8Conference services.147.8.1Conference call, add-on.147.8.2Meet-me conference.147.9Direct dialling in.147.10Diversion services.147.10.1Call forwarding unconditional.147.10.2Call forwarding busy.14SIST EN 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)47.10.3Call forwarding no reply.147.10.4Call deflection.147.10.5Selective call forwarding.157.11Freephone.157.12Malicious call identification.157.13Multiple subscriber number.157.14Subaddressing.157.15Terminal portability.157.16Three party.157.17User-to-user signalling.157.18Outgoing call barring.167.18.1Outgoing call barring: fixed.167.18.2Outgoing call barring: user controlled.167.19Message waiting indication.168Interaction with other services.168.1Universal Access Number (UAN).168.2Virtual card calling.168.3Premium rate.178.4Televoting.178.5Remote control.17History.18SIST EN 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)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 free of charge from the ETSI Secretariat. Latest updates are available on theETSI 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 NetworkAspects (NA).The following three level structure is used to describe the supplementary telecommunications services:- 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 service described instage 1; and- Stage 3: defines the signalling system protocols and switching functions needed to implement the servicedescribed in stage 1.National transposition datesDate of adoption of this EN: 30 October 1998Date 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 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)61ScopeThe present document defines the stage one of the Selective Call Forwarding (SCF) supplementary service for thepan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunicationsoperators. Stage one is an overall service description from the user's point of view, but does not deal with the details ofthe human interface itself.The present document defines the interworking requirements of private ISDNs with the public ISDN.In addition the present document specifies the base functionality where the service is provided to the user via a privateISDN.The present document 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 other networks with thepublic ISDN.Charging principles are outside the scope of the present document.Interaction with supplementary services not listed in clauses 7 and 8 are outside the scope of the present document.The present document deals with the selection mechanisms of the SCF supplementary service. For details of themechanisms by which calls are forwarded, refer to the service descriptions of the call forwarding supplementary services(see ETS 300 200 [5], ETS 300 199 [6], and ETS 300 201 [7]).The SCF supplementary service enables a served user to specify the forwarding of their incoming calls to a selecteddestination subject to certain conditions or circumstances e.g. the calling line identity of the calling user.The SCF supplementary service is applicable to all circuit-switched telecommunication services.The present document is applicable to the stage two and stage three standards for the ISDN SCF supplementary service.The terms "stage two" and "stage three" are also defined in CCITT Recommendation I.130 [1]. Where the text indicatesthe status of a requirement (i.e. as strict command or prohibition, as authorization leaving freedom, as a capability orpossibility), this shall be reflected in the text of the relevant stage two and stage three standards.Furthermore, conformance to the present document is met by conforming to the stage three standards with the field ofapplication appropriate to the equipment being implemented. Therefore, no method of testing is provided for the presentdocument.2 ReferencesReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), inwhich case, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case 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.2.1Normative references[1]CCITT Recommendation I.130 (1988): "Method for the characterization of telecommunicationservices supported by an ISDN and network capabilities of an ISDN".SIST EN 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)7[2]ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDNs".[3]ITU-T Recommendation I.210 (1993): "Principles of telecommunication services supported by anISDN and the means to describe them".[4]ITU-T Recommendation E.164 (1997): "The international public telecommunication numberingplan".[5]ETS 300 200: "Integrated Services Digital Network (ISDN); Call Forwarding Unconditional(CFU) supplementary service; Service description".[6]ETS 300 199: "Integrated Services Digital Network (ISDN); Call Forwarding Busy (CFB)supplementary service; Service description".[7]ETS 300 201 including A1: "Integrated Services Digital Network (ISDN); Call Forwarding NoReply (CFNR) supplementary service; Service description".[8]Void.[9]EN 301 134: "Integrated Services Digital Network (ISDN); Completion of Calls on No Reply(CCNR) supplementary service; Service description".2.2Informative references[10]ETS 300 345: "Integrated Services Digital Network (ISDN); Interworking between public ISDNsand private ISDNs for the provision of telecommunication services; General aspects".3Definitions and abbreviations3.1DefinitionsFor the purposes of the present document, the following definitions apply:served user: a called user to whom the SCF supplementary service has been provided.Integrated Services Digital Network (ISDN): see ITU-T Recommendation I.112 [2], subclause 2.3, definition 308.service, telecommunication service: see ITU-T Recommendation I.112 [2], subclause 2.2, definition 201.supplementary service: see ITU-T Recommendation I.210 [3], subclause 2.4.ISDN number: a number conforming to the numbering plan and structure specified inITU-T Recommendation E.164 [4].screening list: a list containing conditions for forwarding, or for not forwarding, of a call.basic access: see ITU-T Recommendation I.112, subclause 2.4, definition 425.partial number: the most significant digit(s) of the ITU-T Recommendation E.164 international, national or localnumber.primary rate access: see ITU-T Recommendation I.112 [2], subclause 2.4, definition 426.explicit forwarding: forward all calls from specified calling number(s).implicit forwarding: forward all calls except from the specified calling number(s).SIST EN 301 133 V1.1.1:2003

ETSIEN 301 133 V1.1.1 (1998-10)83.2AbbreviationsFor the purposes of the present document, the following abbreviations apply:CLICalling Line IdentityISDNIntegrated Services Digital NetworkSCFSelective Call ForwardingUANUniversal Access Number4DescriptionThe SCF supplementary service shall apply to the basic access and to the primary rate access.The present document should be read in conjunction with the standards for the Call Forwarding services.The SCF supplementary service is an incoming call management feature to the defined Call Forwarding supplementaryservices that allows the served user to define one or more screening lists. The number of screening lists available tousers is a service provider option. Each screening list consists of a set of calling numbers. Incoming calls that satisfy theconditions identified by the screening list shall be forwarded to the forwarded-to ISDN number, which is registered onactivation of the SCF supplementary service. The served user's ability to originate calls is unaffected by the SCFsupplementary service.If the incoming call contains two calling party numbers and only one of the numbers is on the screening list, forwardingshall take place if the additional forwarding conditions (if any) are met.As a service provider option, the served user can also specify the forwarding of their incoming calls to destinationsaccording to additional forwarding conditions, e.g.:-time of day, day of week, etc.;-area of call origination.NOTE:The specification of these service provider options is outside the scope of the present document.The served user can have multiple instances of the activation of the SCF supplementary service, i.e. more than onescreening list may be in use. This enables calls to be forwarded to different destinations, according to different criteria inthe screening lists.For each screening list, the served user shall specify whether forwarding shall be done unconditionallysee ETS 300 200 [5], and/or on busy see ETS 300 199 [6], and/or on no reply see ETS 300 201 [7].All parameters specified by the served user in a screening list shall be independent from those specified in the otherscreening lists belonging to the served user.The SCF supplementary service shall operate with complete or partial calling number(s) specified in local, national orinternational format and the selected calling number(s) shall be able to be specified both explicitly (i.e. forward all callsfrom specified calling number(s) and implicitly (i.e. forward all calls except from the specified calling numbers).5Procedures5.1Provision and withdrawalThe SCF supplementary service shall be provided after prior arrang
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