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TECHNICAL REPORT
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Services alignment and migration
(3GPP TR 22.983 version 15.0.0 Release 15)
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3GPP TR 22.983 version 15.0.0 Release 15 1 ETSI TR 122 983 V15.0.0 (2018-07)
Reference
RTR/TSGS-0122983vf00
Keywords
GSM,LTE,UMTS
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3GPP TR 22.983 version 15.0.0 Release 15 2 ETSI TR 122 983 V15.0.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
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Foreword
This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TR 22.983 version 15.0.0 Release 15 3 ETSI TR 122 983 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions and abbreviations . 5
3.1 Definitions . 5
3.2 Abbreviations . 5
4 Definition of Service Sets in different domains . 6
4.1 CS/PS (non-IMS) domain . 6
4.1.1 CS Services (teleservices & bearer services) . 6
4.1.2 PS main services . 6
4.1.3 Supplementary services . 6
4.1.4 Other services . 7
4.2 IMS domain . 7
4.2.1 Main services . 7
4.2.2 Supplementary services . 7
4.3 TS & BS relationship between domains . 8
4.4 SS and other services relationship between domains . 8
5 Service alignment between domains . 10
5.1 Connection scenarios . 10
5.2 Network configurations . 10
5.3 Service experience . 11
6 Use cases . 11
6.1 Use case 1, MSC server control of all accesses . 11
6.2 Use case 2, migrating to IMS . 11
6.3 Use case 3, after migration to IMS . 11
6.4 Use case 4, inter-working between IMS & CS based networks . 12
6.5 Use case 5, roaming. 12
7 Migration scenarios . 12
7.1 Background . 12
7.2 Abrupt switch over to centralized IMS call and service control . 12
7.3 Smooth phase out of CS . 13
8 Conclusions . 13
Annex A: Change history . 15
History . 16
ETSI
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Foreword
rd
This Technical Report has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI
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3GPP TR 22.983 version 15.0.0 Release 15 5 ETSI TR 122 983 V15.0.0 (2018-07)
1 Scope
This document studies how services to the end user should be delivered and managed regardless of how the user
accesses the services (e.g. using CS or IMS) and to ensure a consistent user experience.
The services in scope include but are not restricted to:
• Conversational voice and video services
• Messaging services
• Supplementary Services as applied to the above.
For each of the above types, the service features that should be supported when accessing the service via CS or IMS
using any appropriate access type are described. Also, how each service will behave when transferring between
domains is described.
The work will also consider how to support existing ("traditional") services while allowing new, innovative services to
be provided to the end user using the enhanced capabilities of the IMS. It will cover possible migration paths from
where services are provided on both CS and IMS to IMS Call and Service Control. Also, this work will consider
roaming and call handling, interaction with legacy terminals, and the provision of user state and location for services
accessed via CS or IMS and for services transferred between them.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A
term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905 [1].
ETSI
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4 Definition of Service Sets in different domains
4.1 CS/PS (non-IMS) domain
4.1.1 CS Services (teleservices & bearer services)
Telephony
Emergency calls
Short Message Service (SMS MO/SMS MT)
Alternate speech and facsimile (Group 3)
Automatic facsimile (Group 3)
Asynchronous Data – 2G
Synchronous Data – 2G
High Speed Circuit Switched Data (HSCSD) – 2G
Circuit Switched Data - 3G
4.1.2 PS main services
GPRS (including EDGE) – 2G
Packet Data (including HSPA) – 3G
4.1.3 Supplementary services
Calling Line Identification Presentation (CLIP)
Calling Line Identification Restriction (CLIR)
Connected Line Identification Presentation (CoLP)
Connected Line Identification Restriction (CoLR)
Calling Name Presentation (CNAP)
Call Forwarding Unconditional (CFU)
Call Forwarding on mobile subscriber busy (CFB)
Call Forwarding on no reply (CFNRy)
Call Forwarding on mobile subscriber not reachable (CFNRc)
Call Waiting (CW)
Call Hold (HOLDcall)
Multi-party (MPTY)
Multi-call (MC)
Closed User Group (CUG)
Completion of Calls to Busy Subscribers (CCBS)
Call Deflection (CD)
Explicit Call Transfer (ECT)
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Barring of all outgoing calls (BAOC)
Barring of all outgoing international calls (BOIC)
Barring of all outgoing international calls except home country (BOIC ex HC)
Barring of all incoming calls (BAIC)
Barring of all incoming calls when roaming outside HPLMN (BAIC-roam)
Operator Determined Barring (ODB)
User to User signalling (UUS)
Unstructured Supplementary Service Data (USSD MO/USSD MT)
Advice of Charge (AoC)
Support of Private Numbering Plan (SPNP)
4.1.4 Other services
Customised Applications for Mobile Network Enhanced Logic (CAMEL). This enables support for:
- Value Added Services in HPLMN and VPLMN (available in most networks)
- Optimised routing of mobile originated voice communications when roaming
Enhanced Multi-Level Precedence & Pre-emption (eMLPP)
Support of Localised Service Area (SoLSA)
4.2 IMS domain
4.2.1 Main services
Multimedia Telephony Service
4.2.2 Supplementary services
Note that the Supplementary Services listed below apply only to the Multimedia Telephony Service
Originating Identification Presentation (OIP)
Originating Identification Restriction (OIR)
Terminating Identification Presentation (TIP)
Terminating Identification Restriction (TIR)
Malicious Call Identification (MCID)
Anonymous Call Rejection (ACR)
Communication Waiting (CW)
Communication Diversion (CDIV)
Communication Hold (HOLDcomm)
Communication Barring (CB)
Completion of Communication to Busy Subscriber (CCBS)
Message Waiting Indication (MWI)
Conference (CONF)
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Explicit Communication Transfer (ECommT)
Closed User Group (CUG)
Reverse Charging
Advice of Charge (AOC)
4.3 TS & BS relationship between domains
The mapping between the teleservices and bearer services in the IMS and non-IMS domains is defined below.
Generally, the services used in one domain should still work if the user moves to another domain, however, the
capabilities of the domain will dictate how the service performs. For example, the user will experience a much reduced
data rate in moving from 3G HSPA to GPRS. This may make it impossible to continue the service. Some services
defined for 2G/CSD have no equivalent in IMS (e.g some of the data services). It is not possible, therefore to define
behaviour for these services.
The UE state (e.g. free, busy, not available etc) should be handled consistently to ensure that incoming and outgoing
communications are handled appropriately. For example, the the UE is on a voice call in the non-IMS domain and an
incoming communication arrives in the IMS domain, the appropriate action can be taken, e.g signal “Communication
Waiting” or divert on busy to voicemail.
Non-IMS Domain Service Equivalent IMS Domain Service Behaviour Required
Service
Telephony Multimed
...