SIST EN 301 273 V1.1.3:2003

• Abstract:

  To produce an ETSI stage 1 description for phase 2 of the CTM service

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.050.01 - Telecommunication terminal equipment in general
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• 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 301 273 V1.1.3 (2000-01) - Cordless Terminal Mobility (CTM); Phase 2; Service description

SIST EN 301 273 V1.1.3:2003 is the Slovenian adoption of ETSI EN 301 273 Version 1.1.3, a stage 1 service description for Cordless Terminal Mobility (CTM) Phase 2. It specifies how the CTM service works from the subscriber and user point of view, including core service features, optional features, supplementary services, procedures, and interworking rules for public and private networks. The document is intended for network operators, service providers, and manufacturers of terminals, switches, and databases.

What does SIST EN 301 273 V1.1.3:2003 specify?

SIST EN 301 273 V1.1.3:2003 defines the stage 1 description of CTM Phase 2 for service delivery over pan-European ISDN or PSTN networks. It also sets out how CTM behaves when users roam or call across different networks, including public and private network boundaries.

The document is organized into scope, references, definitions, abbreviations, service description, procedures, interworking requirements, interactions with ISDN supplementary services, and interaction with other services. That structure matters because it separates user-visible service behavior from network procedures and service interactions.

The scope includes core requirements that can stand alone, optional features that may be added, and additional interworking rules for mixed-network situations. CTM on mobile networks is outside the scope.

What are the key requirements of SIST EN 301 273 V1.1.3:2003?

Core CTM service behavior

SIST EN 301 273 V1.1.3:2003 defines CTM as a service that lets cordless terminal users make and receive calls while moving within radio coverage, and continue an ongoing call without interruption when conditions allow. In practice, this is the basic mobility promise the network must support.

The core features include numbering, outgoing call, emergency call, incoming call, roaming, handover, security, service profile, and message waiting indication. These features determine how the user is reached, how calls are handled, and how the network keeps track of the user.

Numbering may use a geographical or non-geographical CTM number, and an existing ITU-T Recommendation E.164 number may be retained as an option. This matters because it affects dialing, routing, and how a user can keep a familiar number.

Emergency call support is available even without CTM subscription. The document says the call should provide at least the user’s location to the emergency organization, which is important for emergency response handling.

Security and user data handling

SIST EN 301 273 V1.1.3:2003 requires security based on terminal authentication, network authentication, and encryption, subject to the limits of the underlying cordless access standard. In practice, that means the service is expected to protect against unauthorized use, impersonation, and eavesdropping.

The service profile is the record that holds CTM user information needed for correct call handling. Optional service profile modification and interrogation may be supported, including from another terminal by DTMF signalling, so operators need to decide what user data can be changed or queried.

Message waiting indication is part of the service and may include mailbox status. If the user is unreachable, the network is expected to retry when the user becomes reachable again.

Procedures, roaming, and interworking

Provisioning requires prior arrangement between the service provider, network operator(s), and the subscriber. Service registration and de-registration are administrative steps, and the registration remains valid across the service area so the user does not need to re-register when roaming between networks.

Location registration is the mechanism that activates the service by making the user’s current location known to the network. The document also gives rejection cases for registration and other procedures, such as unknown identity, not being allowed in the current area, or temporary unavailability.

CTM Phase 2 includes roaming between public networks and between public and private networks, subject to roaming agreements. The visited network is expected to cooperate so the user can keep service behavior comparable to the home network.

The document also describes interaction with many ISDN supplementary services, including calling line identification, call forwarding, completion of calls to busy subscriber, and user-to-user signalling. Some combinations have no impact, while others use CTM-specific handling or are rejected at call setup time.

What terms does SIST EN 301 273 V1.1.3:2003 define?

• CTM number - The number that uniquely identifies a CTM user and is used to reach that user, independent of terminal or network.
• CTM identity - The identity used by CTM providers and networks to identify a CTM user unambiguously.
• access rights - The indication that a cordless terminal is allowed to use the CTM service.
• location registration - The procedure by which the network determines the terminal’s position to the level of one location area.
• handover - The process that keeps an ongoing call active while the user moves within continuous radio coverage.
• service profile - The record containing all service information related to a CTM user.
• roaming - Movement of a CTM user without a call in progress from one location area to another, within the same or different supporting networks.

Who uses SIST EN 301 273 V1.1.3:2003?

Network operators use SIST EN 301 273 V1.1.3:2003 to plan CTM support, roaming arrangements, authentication, and call handling. Service providers use it to define subscriber offerings, service profiles, optional features, and withdrawal conditions.

Manufacturers of terminals, switches, and databases use it to align equipment behavior with the CTM service model. That is important for interoperability between user terminals, network functions, and user databases.

It is also relevant to organizations working with public ISDN, PSTN, and private network interworking, especially where roaming or supplementary service behavior must be agreed across domains.

Which standards are used with SIST EN 301 273 V1.1.3:2003?

• ETS 300 109 - Gives the ISDN speech bearer service description used as a basic service reference.
• ETS 300 110 - Gives the ISDN 3,1 kHz audio bearer service description.
• ETS 300 111 - Gives the ISDN telephony 3,1 kHz teleservice description used for call procedures.
• ETS 300 345 - Provides general interworking aspects between public and private ISDNs.
• ETS 300 824 - Defines the DECT CTM Access Profile, which supports terminal capability requirements.
• ITU-T Recommendation E.164 - Provides the international public telecommunication numbering plan used for CTM numbering.
• CCITT Recommendation I.130 - Provides the method for characterizing telecommunication services and network capabilities in ISDN.

What does the SIST EN 301 273 V1.1.3:2003 document contain?

The document contains service feature descriptions, procedural rules, interworking behavior, and service interaction rules. It gives the service model for core and optional features, then describes how registration, roaming, authentication, call origination, call delivery, and message waiting indication are handled.

It also sets out exceptional cases, such as registration rejection, failed authentication, and unreachable users. The interaction clauses are especially useful for implementers because they show how CTM behaves with ISDN supplementary services and with other services such as UPT.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HCordless Terminal Mobility (CTM); Phase 2; Service description33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)33.050.01Telekomunikacijska terminalska oprema na splošnoTelecommunication terminal equipment in generalICS:Ta slovenski standard je istoveten z:EN 301 273 Version 1.1.3SIST EN 301 273 V1.1.3:2003en01-december-2003SIST EN 301 273 V1.1.3:2003SLOVENSKI
STANDARD
ETSIEN301273V1.1.3(2000-01)EuropeanStandard(Telecommunicationsseries)CordlessTerminalMobility(CTM);Phase2;ServicedescriptionSIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)2ReferenceDEN/NA-020061KeywordsCTM,DECT,mobility,stage1ETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]Ideliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.73Definitions.74Abbreviations.95Description.95.1Coreservicefeatures.105.1.1Numbering.105.1.2Outgoingcall.105.1.3Emergencycall.105.1.4Incomingcall.105.1.5Roaming.105.1.6Handover.115.1.7Security.115.1.7.1Terminalauthentication.115.1.7.2Networkauthentication.115.1.7.3Encryption.115.1.8Serviceprofile.125.1.9Messagewaitingindication.125.2Optionalservicefeatures.125.2.1Serviceprofilemodification.125.2.2Serviceprofileinterrogation.125.3CTMsupplementaryservices.125.3.1CTMcallforwardingonnotreachable.125.3.2CTMcallforwardingunconditional.125.3.3CTMcallforwardingonbusy.135.3.4CTMcallforwardingonnoreply.135.3.5CTMcallinglineidentificationpresentation.135.3.6CTMcallinglineidentificationrestriction.135.3.7CTMconnectedlineidentificationpresentation.135.3.8CTMconnectedlineidentificationrestriction.135.3.9CTMincomingcallscreening.135.3.10CTMoutgoingcallbarring.136Procedures.136.1Provisionandwithdrawal.136.2Normalprocedures.146.2.1Registration,deregistrationanderasure.146.2.1.1Corerequirements.146.2.1.2Optionalrequirements.146.2.2Activationanddeactivation.146.2.2.1Corerequirements.146.2.2.2Optionalrequirements.146.2.3Invocationandoperation.156.2.3.1Corerequirements.156.2.3.2Optionalrequirements.166.2.4Interrogation.166.2.4.1Corerequirements.166.2.4.2Optionalrequirements.166.3Exceptionalprocedures.166.3.1Registrationanderasure.166.3.1.1Corerequirements.16SIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)46.3.1.2Optionalrequirements.166.3.2Activationanddeactivation.166.3.2.1Corerequirements.166.3.2.2Optionalrequirements.176.3.3Invocationandoperation.176.3.3.1Corerequirements.176.3.3.2Optionalrequirements.176.3.4Interrogation.186.3.4.1Corerequirements.186.3.4.2Optionalrequirements.187Interworkingrequirements.187.1InterworkingbetweenpublicnetworksprovidingtheCTMservice.187.1.1PublicCTMuserroamsintoavisitedpublicnetwork.187.2Interworkingwithprivatenetworks.187.2.1PublicCTMuserroamsintoaPISNarea.197.2.2PrivateCTMuserroamsintoapublicCTMnetworkarea.197.3InterworkingwithnetworksnotprovidingtheCTMservice.197.4Co-operationbetweennetworkoperatorsandserviceproviders.198InteractionwithISDNsupplementaryservices.208.1Interactiondescription.208.1.1Adviceofchargeservices(AOC-S,AOC-D,AOC-E,AOC-R).208.1.2Callhold(HOLD).208.1.3Explicitcalltransfer.208.1.4Callinglineidentificationpresentation.208.1.5Callinglineidentificationrestriction.208.1.6Connectedlineidentificationpresentation.218.1.7Connectedlineidentificationrestriction.218.1.8Closedusergroup.218.1.9Completionofcallstobusysubscriber.218.1.10Completionofcallsonnoreply.218.1.11Conferencecall,add-on(CONF).218.1.12Callforwardingunconditional.218.1.13Callforwardingonbusy.218.1.14Callforwardingonnotreachable.228.1.15Selectivecallforwarding.228.1.16Callforwardingunconditionaltoaservicecentre.228.1.17Maliciouscallidentification.228.1.18Threeparty.228.1.19User-to-usersignalling.228.1.20In-callmodification.228.1.21Trunkhunting.228.1.22Fixedoutgoingcallbarring.228.1.23Usercontrolledoutgoingcallbarring.238.1.24Reversechargingatcallsetuptime.238.1.25Messagewaitingindication.238.1.26Othersupplementaryservices,otherservices.239Interactionwithotherservices.249.1Universalpersonaltelecommunication.24History.25SIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeNetworkAspects(NA).InaccordancewithCCITTRecommendationI.130[7],thefirststageofthefollowingthreelevelstructureisusedtodescribethetelecommunicationsservicesasprovidedbyEuropeanpublictelecommunicationsoperators:-Stage1:isanoverallservicedescription,fromtheservicesubscriber'sanduser'sstandpoint;-Stage2:identifiesthefunctionalcapabilitiesandinformationflowsneededtosupporttheservicedescribedinstage1;and-Stage3:definesthesignallingsystemprotocolsandswitchingfunctionsneededtoimplementtheservicedescribedinstage1.Thepresentdocumentdetailsthestage1aspects(overallservicedescription)fortheCTMservice,takingintoaccountthevariousnetworkarchitectures,e.g.,IN.Theapplicationofstage2andstage3maybedifferentwhentheserviceissupportedonanINenvironment.NOTE:CTMphase2servicedescriptionimprovesphase1withenhancementsintheareaofmobility(handover,messagewaitingindication).Moreoveritdefinesacomprehensivesupportforemergencycallcorefeature.CTMphase2definesalsoCTMspecificsupplementaryservices.RegardingterminalcapabilitiesthepresentdocumentformsthebasisfortheDECTCTMAccessProfile(CAP)ETS300824[5].NationaltranspositiondatesDateofadoptionofthisEN:31December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000SIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)61ScopeThepresentdocumentdefinesthestage1servicedescriptionforphase2oftheCTMservice.Stage1isanoverallservicedescription,primarilyfromtheservicesubscriber'sanduser'spointofview,butdoesnotdealwiththedetailsofthehumaninterfaceitself.Thepresentdocumentincludesinformationapplicabletonetworkoperatorsandterminal,switchanddatabasemanufacturers.ThepresentdocumentspecifiestherequirementswheretheserviceisprovidedtotheCTMuserviaatelecommunicationsnetworkthatiseitherthepan-EuropeanISDNoraPSTNasprovidedbyEuropeanpublictelecommunicationsoperators.Thepresentdocumentincludesinterworkingrequirementsforcaseswhereusersinacallarelocatedondifferentnetworks.TheprovisionoftheCTMserviceonmobilenetworksisoutsidethescopeofthepresentdocument.Thepresentdocumentcontainsthecorerequirementsforphase2oftheCTM.Aservicemaybeprovidedonthebasisofthesecorerequirementsalone.Thepresentdocumentalsodocumentssomeoptionalservicefeatureswhichmaybeusedtoenhancetheservice.Furthermore,additionalfunctionalitiesnotdocumentedinthepresentdocumentmaybeimplemented.Therequirementsofwhichareconsideredoutsideofthescopeofthepresentdocumentandconsequentlyoutsidethescopeofthecorrespondingstage2andstage3standards.Suchadditionalfunctionalitymaybeonanetwork-widebasis,orparticulartooneCTMuseroragroupofCTMusers.Suchadditionalfunctionalitydoesnotcompromiseconformancetothecorerequirementsoftheservice.Chargingprinciplesareoutsidethescopeofthepresentdocument,unlessspecificservicerequirementsarestated.TheserequirementsdealwiththeallocationofcertaincallchargestoparticularCTMusers.InteractionswithservicesandISDNsupplementaryservicesnotlistedinclauses8and9areoutsidethescopeofthepresentdocument.TheCTMserviceallowsusersofcordlessterminalstobemobilewithinandbetweennetworks.WhereradiocoverageisprovidedandthecordlessterminalhasappropriateaccessrightstheCTMuserisabletomakecallsfrom,andtoreceivecallsat,anylocationwithinthefixedpublicand/orprivatenetworks,andmaymovewithoutinterruptionofacallinprogress.Phase2oftheCTMserviceisapplicabletothetelephony3,1kHzteleservice(seeETS300111[3]).Phase2oftheCTMserviceisalsoapplicabletothespeechbearerservice(seeETS300109[1])andthe3,1kHzaudiobearerservice(seeETS300110[2]).Ifthepresentdocumentisapplicabletothestage2andstage3standardsforthephase2oftheCTMservice,wherethetextindicatesthestatusofarequirement(i.e.asstrictcommandorprohibition,asauthorizationleavingfreedom,asacapabilityorapossibility),thisshallbereflectedintherelevantstage2andstage3standards.Otherwise,thestatusofarequirementshallbereflectedintherelevantstandardsfortheunderlyingprotocols.Furthermore,conformancetothepresentdocumentiseithermetby:-conformingtothestage3standards;or-implicitlycoveredbyconformingtothestandardsfortheunderlyingprotocols,withthefieldofapplicationappropriatetotheequipmentbeingimplemented.Thereforenomethodoftestingisprovidedforthepresentdocument.SIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)72ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,subsequentrevisionsdoapply.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETS300109(1992):"IntegratedServicesDigitalNetwork(ISDN);Circuit-mode64kbit/s8kHzstructuredbearerservicecategoryusableforspeechinformationtransfer,Servicedescription".[2]ETS300110(1992):"IntegratedServicesDigitalNetwork(ISDN);Circuit-mode64kbit/s8kHzstructuredbearerservicecategoryusablefor3,1kHzaudioinformationtransfer,Servicedescription".[3]ETS300111(1992):"IntegratedServicesDigitalNetwork(ISDN);Telephony3,1kHzteleservice,Servicedescription".[4]ETS300345(1994):"IntegratedServicesDigitalNetwork(ISDN);InterworkingbetweenpublicISDNsandprivateISDNsfortheprovisionoftelecommunicationservices;Generalaspects".[5]ETS300824:"DigitalEnhancedCordlessTelecommunications(DECT);CordlessTerminalMobility(CTM);CTMAccessProfile(CAP)".[6]ITU-TRecommendationE.164(1997):"Theinternationalpublictelecommunicationnumberingplan".[7]CCITTRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".3DefinitionsForthepurposeofthepresentdocument,thefollowingtermsanddefinitionsapply:authentication:securitymechanismallowingtheverificationoftheprovidedidentityaccessrights:indicationthatthecordlessterminalhasappropriateaccessallowancetotheCTMserviceNOTE1:Thisdefinitiondoesnotrefertoanyspecificaccesstechnology.accessrightsidentity:identitywhichisgloballyuniquetoaserviceproviderandwhichshowstheaccessrightsrelatedtothisserviceproviderbasiccall(procedures):proceduresbywhichacall(asaninstanceofabasictelecommunicationservice)isestablishedandterminatedNOTE2:Emergencycallisnotabasiccall.cordlessterminal:physicalentitythatprovidesaccesstothetelecommunicationservicesofanetworkviaaradiointerfacecoreservicefeature:particularservicefeaturefundamentaltothetelecommunicationservice,i.e.,intheabsenceofthisservicefeature,thetelecommunicationservicedoesnotmakesenseasacommercialofferingtotheservicesubscribercoveragearea:areawithintheradiocoverageareainwhichtheCTMuserhassubscribedtousetheCTMserviceSIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)8CTMidentity:identitybywhichaCTMuserisknowntotheCTMserviceprovidersandnetworkssupportingCTM,anditisusedforflexibilityandsecuritypurposes.TheCTMidentityidentifiesaCTMuserunambiguously.TheCTMidentitydoesnotneedtobeknownbyusersCTMnumber:numberthatuniquelyandunambiguouslyidentifieseachCTMuser.ItisusedbyacallingpartytoreachtheCTMuser.Thenumberisindependentofthecallingterminal,networkorserviceusedanditisaE.164numberE.164number:numberconformingtothenumberingplanandstructurespecifiedinITU-TRecommendationE.164[6]forwarded-tonumber:numbertowhichthecallisredirectedasaresultofcallforwardinghandover:processbywhichacallinprogressismaintainedwhentheCTMusermoveswiththecordlessterminalwithacallinprogresswithinanetworkwherecontinuousradiocoverageisprovidedlocationarea:radiocoverageareainwhichacordlessterminalmayreceivecallsasaresultofasinglelocationregistrationlocationregistration:processwherebythepositionofaCTMterminalisdeterminedtothelevelofonelocationareanetworkoperator:entitythatprovidesthenetworkoperatingelementsandresourcesfortheexecutionoftheCTMservicenotreachable:statusinthenetworkwhenanincomingcallisofferedtoacordlessterminalbutthecordlessterminalisoutofradiocoverage,switchedofforthereisradiocongestionoptionalservicefeature:servicefeatureaddedtocorefeaturetooptionallyenhanceaserviceofferingradiocoverage:areainwhichcordlessterminalsmaybeusedtoestablishandmaintaintelecommunicationservicesviatheradiobasestationssupportedbythenetworksupportingtheCTMserviceNOTE3:TheradiocoveragesupportedbyanindividualnetworksupportingtheCTMservicemaybecontinuousordiscontinuous,i.e.itmaycorrespondtothecompletegeographicalterritoryservedbythenetworkoritmaynot.Inthecaseofdiscontinuousradiocoverage,theareasofradiocoveragemayconsistofindividualradiocells,servingforexampleisolatedhousesorverysmallbusinesses,orcordlessislandsconsistingofacollectionofradiocellsprovidingcontinuouscoverageoflargerareas.TheradiocoveragesupportedbyanetworksupportingtheCTMservicemayoverlapwiththeradiocoveragesupportedbyoneormoreothernetworkssupportingtheCTMserviceoritmaybecomplementary.roaming:CTMusermoveswiththecordlessterminalwithoutacallinprogressfromonelocationareatoanotherlocationareawithinthesameand/orbetweendifferentnetworkssupportingtheCTMserviceservicefeature:specificaspectofatelecommunicationservicethatcanalsobeusedinconjunctionwithothertelecommunicationservicesorservicefeaturesaspartofacommercialoffering.Itiseitheracorepartofatelecommunicationserviceoranoptionalpartofferedasanenhancementtoatelecommunicationserviceserviceprofile:recordcontainingalltheserviceinformationrelatedtoaCTMuserserviceprovider:actorwhoprovidesCTMservicestoitsservicesubscribersonacontractualbasisandwhoisresponsiblefortheCTMservicesoffered.Thesameorganizationmayactasanetworkoperatorandaserviceproviderservicesubscriber:entitythatcontractsforservicesofferedbyserviceprovidersservice:thatwhichisofferedbyanadministrationorapublicorprivateserviceprovidertoitsservicesubscriberinordertosatisfyatelecommunicationrequirementterminalmobility:abilityofaterminaltoaccesstelecommunicationservices,whileinmotion,andthecapabilityofthenetworktolocateandidentifythatterminalasitmovesuser:personormachinedelegatedbyaservicesubscribertousetheservicesand/orfacilitiesofatelecommunicationnetworkSIST EN 301 273 V1.1.3:2003

ETSIETSIEN301273V1.1.3(2000-01)94AbbreviationsForthepurposeofthepresentdocument,thefollowingabbreviationsapply:CAPCTMAccessProfileCCBSCompletionofCallstoBusySubscriberCCNRCompletionofCallsonNoReplyCFBCallForwardingonBusyCFNRCallForwardingonNoReplyCFNRcCallForwardingonNotReachableCFUCallForwardingUnconditionalCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionCOLPConnectedLineIdentificationPresentationCOLRConnectedLineIdentificationRestrictionCT2SecondgenerationofCordlessTechnologyCTMCordlessTerminalMobilityCUGClosedUserGroupDECTDigitalEnhancedCordlessTelecommunicationsICSIncomingCallScreeningIMIn-callModificationINIntelligentNetworkISDNIntegratedServicesDigitalNetworkOCBOutgoingCallBarringPISNPrivateIntegratedServicesNetworkPSTNPublicSwitchedTelephoneNetworkREV-SREVersechargingatcallSetuptimeUPTUniversalPersonalTelecommunicationUUSUser-to-UserSignalling5DescriptionTheCTMserviceallowsusersofcordlessterminalstobemobilewithinandbetweennetworks.Whereradiocoverageisprovidedandthecordlessterminalhasappropriateaccessrightst
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