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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Closed User Group (CUG) using IP Multimedia (IM)
Core Network (CN) subsystem, Protocol Specification
(3GPP TS 24.654 version 15.0.0 Release 15)
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3GPP TS 24.654 version 15.0.0 Release 15 1 ETSI TS 124 654 V15.0.0 (2018-07)
Reference
RTS/TSGC-0124654vf00
Keywords
GSM,LTE,UMTS
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GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 2 ETSI TS 124 654 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
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
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ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
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Foreword
This Technical Specification (TS) 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 "shall", "shall not", "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 TS 24.654 version 15.0.0 Release 15 3 ETSI TS 124 654 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 7
4 Closed User Group (CUG) . . 8
4.1 Introduction . 8
4.2 Description . 8
4.3 Operational requirements . 8
4.3.1 Provision/withdrawal . 8
4.3.2 Requirements on the originating network side. 9
4.3.3 Requirements in the terminating network . 9
4.4 Coding requirements . 10
4.4.1 XML definition . 10
4.4.2 SIP-Messages used for CUG . 11
4.5 Signalling requirements . 11
4.5.0 General . 11
4.5.1 Activation/deactivation . 11
4.5.1a Registration/erasure . 11
4.5.1b Interrogation . 11
4.5.2 Invocation and operation . 11
4.5.2.1 Actions at the originating UA . 11
4.5.2.2 Void. 12
4.5.2.3 Void. 12
4.5.2.4 Actions at the AS of the originating User . 12
4.5.2.5 Void. 16
4.5.2.6 Void. 16
4.5.2.7 Void. 16
4.5.2.8 Void. 16
4.5.2.9 Void. 16
4.5.2.10 Actions at the AS of the terminating user . 16
4.5.2.11 Void. 17
4.5.2.12 Actions at the terminating UA . 17
4.6 Interaction with other services . 17
4.6.1 Communication Hold (HOLD) . 17
4.6.2 Terminating Identification Presentation (TIP) . 17
4.6.3 Terminating Identification Restriction (TIR) . 17
4.6.4 Originating Identification Presentation (OIP) . 17
4.6.5 Originating Identification Restriction (OIR) . 17
4.6.6 Conference calling (CONF) . 17
4.6.7 Communication Diversion Services (CDIV) . 17
4.6.7.1 Communication Forwarding Unconditional (CFU) . 17
4.6.7.2 Communication Forwarding Busy (CFB) . 17
4.6.7.3 Call Forwarding No Reply (CFNR) . 17
4.6.7.4 Communication Forwarding on Not Logged-in (CFNL) . 18
4.6.7.5 Communication Forwarding on Subscriber Not Reachable (CFNRc). . 18
4.6.7.6 Communication Deflection (CD) . 18
4.6.8 Malicious Communication Identification (MCID) . 18
4.6.9 Anonymous Communication Rejection and Communication Barring (ACR/CB) . 18
4.6.10 Explicit Communication Transfer (ECT) . 18
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 4 ETSI TS 124 654 V15.0.0 (2018-07)
4.6.11 Closed User Group (CUG) . 18
4.6.12 Three-Party (3PTY) . 18
4.6.13 Enhanced Calling Name (eCNAM) . 18
4.7 Interactions with other networks . 19
4.7.1 Void . 19
4.7.2 Void . 19
4.7.3 Void . 19
Annex A (informative): Void . 20
Annex B (informative): Change history . 21
History . 22
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 5 ETSI TS 124 654 V15.0.0 (2018-07)
Foreword
This Technical Specification (TS) was been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN) and originally published as ETSI TS 183 054 [].
It was transferred to the 3rd Generation Partnership Project (3GPP) in December 2007.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 TS 24.654 version 15.0.0 Release 15 6 ETSI TS 124 654 V15.0.0 (2018-07)
1 Scope
The present document specifies the stage three Protocol Description of the Closed User Group (CUG) service, based on
stage one and two of the ISDN Communication diversion supplementary services. It provides the protocol details in the
IP Multimedia (IM) Core Network (CN) subsystem based on the Session Initiation Protocol (SIP) and the Session
Description Protocol (SDP).
The present document is applicable to User Equipment (UE) and Application Servers (AS) which are intended to
support the CUG supplementary service.
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 TS 22.173: "IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service
and supplementary services, stage 1".
[2] 3GPP TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session
Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
[3] Void
[4] Void
[5] 3GPP TS 24.238: "Session Initiation Protocol (SIP) based user configuration; stage 3".
[6] 3GPP TS 24.623: "Extensible Markup Language (XML) Configuration Access Protocol (XCAP)
over the Ut interface for Manipulating Supplementary Services".
[7] IETF RFC 5621: "Message Body Handling in the Session Initiation Protocol (SIP)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP TS 22.173 [1] and the following
apply:
basic service: bearer or teleservice. Within the scope of SIP based networks the identification of a bearer or teleservice
can be derived from the SDP used
Closed User Group (CUG) communication: closed user group communication is a communication which is restricted
to a pre-defined group of users
Closed User Group (CUG) member: user who has subscribed to the CUG service and is one of the users in the group
formed by a particular closed user group
CUG index: parameter used by the originating user to select a particular CUG when originating a communication
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 7 ETSI TS 124 654 V15.0.0 (2018-07)
NOTE 1: The index is also used by the network to indicate to the terminating user the CUG from which an
incoming communication has originated. This index has only local significance, i.e. the index used by the
originating user is, in general, different from the index used by the terminating user to identify the same
CUG.
CUG interlock code: means of identifying CUG membership within the network
NOTE 2: At the originating side, if a CUG match exists, the CUG index identifying a CUG maps to the CUG
interlock code for that CUG. If a CUG match exists at the terminating side the CUG interlock code
identifying a CUG maps to the CUG index representing that CUG. CUG interlock code has relevance on
NN level between AS.
CUG manager: authority representing the interests of all the members of a CUG
NOTE 3: By planning and controlling the membership and members' options, the manager can provide the overall
CUG service expected by the members as a whole. The CUG manager need not be a CUG member and
the concept has no signalling implications.
incoming access: arrangement which allows a member of a closed user group to receive communications from outside
the closed user group
incoming communications barred within a closed user group: access restriction that prevents a closed user group
member from receiving communications from other members of that group
outgoing access: arrangement which allows a member of a closed user group to place communications outside the
closed user group
outgoing communications barred within a closed user group: access restriction that prevents a closed user group
member from placing communications to other members of that group
preferential CUG: user subscribing to preferential CUG nominates a CUG index which the network uses as a default
to identify the required CUG in the absence of any CUG information in the outgoing communication request
NOTE 4: A preferential CUG applies to a Public ID.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACR Anonymous Call Rejection
AS Application Server
CDIV Communication DIVersion
CONF CONFerence calling
CUG Closed User Group
ECT Explicit Communication Transfer
HOLD communication HOLD
IA Incoming Access
ICB Incoming Communication Barring
IMS IP Multimedia Subsystem
IP Internet Protocol
ISDN Integrated Service Data Network
MCID Malicious Communication IDentification
OA Outgoing Access
OCB Outgoing Communication Barring
OIP Originating Identification Presentation
OIR Originating Identification Restriction
PSTN Public Switched Telephone Network
SDP Session Description Protocol
SIP Session Initiation Protocol
TIP Terminating Identity Presentation
TIR Terminating Identification Restriction
UA User Agent
UE User Equipment
URI Universal Resource Identifier
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 8 ETSI TS 124 654 V15.0.0 (2018-07)
XML eXtensible Markup Language
4 Closed User Group (CUG)
4.1 Introduction
The Closed User Group (CUG) service enables users to form groups of members, whose communication profile is
restricted for incoming and outgoing communications.
4.2 Description
Members of a specific CUG can communicate among themselves but not, in general, with users outside the group.
Specific CUG members can have additional capabilities that allow them to initiate outgoing communications to users
outside the group, and/or to accept incoming communications from users outside the group. Specific CUG members can
have additional restrictions that prevent outgoing communications to other members of the CUG, or prevent incoming
communications from other members of the CUG.
A closed user group consists of a number of members from one or more public, and/or private networks. A specific user
may be a member of one or more CUGs. Subscription to a closed user group shall be defined for all communication
services, or in relation to one, or to a list of communication services.
4.3 Operational requirements
4.3.1 Provision/withdrawal
The CUG service shall be provided after prior arrangement with the service provider.
As a network option based on subscription basis. The CUG service can be offered with several subscription options.
The provisioning of a new CUG shall require a prior arrangement between the CUG Manager and the network provider.
The provision of the CUG service to a new member and also the assignment of the various CUG service options to a
new or existing member shall require a prior arrangement between the CUG member and the network provider in
coordination with the CUG Manager of the affected CUG.
The CUG Service is provisioned by the operator.
The subscription options can be divided into three groups:
- General Subscription options.
- Per CUG.
- Per Public ID.
General Subscription options:
A user can be a member of several closed user groups as shown in table 4.3.1.1. Each CUG is bind to the members with
an individual CUG Index. Each network operator shall define the maximum number of closed user groups which can be
allocated to an individual user.
Table 4.3.1.1: General subscription options
Subscription options Value
Closed user groups List of one or more closed user group indices
Subscription options per CUG:
- For a particular closed user group, the associated set of general subscription options can apply to one basic
service, to a particular set of basic services, or to all basic services (see table 4.3.1.2).
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 9 ETSI TS 124 654 V15.0.0 (2018-07)
Table 4.3.1.2: Subscription options per CUG
Subscription options Value
Intra closed user group restrictions (for each None designated
closed user group) ________________________
Incoming communications barred within a
closed user group
________________________
Outgoing communications barred within a
closed user group
Applicability to basic services (for each closed list of one or more basic services
user group) ________________________
all basic services
Subscription options per Public ID:
- The network shall provide a subscription option in order to enable the user to specify a preferential closed user
group (see table 4.3.1.3).
- The user can request that no preferential closed user group exists, or can request that a particular one of the user's
closed user groups (or the only one if a single closed user group applies) is used as a preferential closed user
group.
- The closed user group indices shall be allocated by prior arrangement with the service provider.
- The choice of preferential closed user group shall be alterable only by service provider action upon request by
the served user.
- The CUG service shall be withdrawn at the customer's request, or for administrative reasons.
Table 4.3.1.3: Subscription options per Public ID
subscription options Value
Preferential closed user group None designated
________________________
closed user group index
Outgoing access allowed per communication
________________________
allowed permanent (default)
________________________
not allowed
Incoming access allowed
________________________
not allowed
4.3.2 Requirements on the originating network side
For correct interactions with other services, it is necessary for the originating network side to store, for the duration of
the communication, details of whether a non-CUG, CUG (without outgoing access) or CUG (with outgoing access)
communication was requested in the information sent to the destination network side. The CUG identity (if any)
requested of the destination network side must also be retained.
4.3.3 Requirements in the terminating network
For correct interactions with other supplementary services, it is necessary for the destination network side to store, for
the duration of the communication, details of whether a non-CUG or CUG (with or without outgoing access)
communication request was passed to the user. The CUG identity (if any) requested must also be retained.
ETSI
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3GPP TS 24.654 version 15.0.0 Release 15 10 ETSI TS 124 654 V15.0.0 (2018-07)
4.4 Coding requirements
4.4.1 XML definition
This subclause defines the XML Schema to be used for providing the CUG Interlock code and the
CUGcommunicationindicator.
The application/vnd.etsi.cug+xml MIME type used to provide CUG Interlock code, cugIndex outgoingAccessRequest
and the CUGcommunicationindicator the XML used shall be coded as following described:
xmlns:ss="http://uri.etsi.org/ngn/params/xml/simservs/xcap"
targetNamespace="http://uri.etsi.org/ngn/params/xml/simservs/xcap" elementFormDefault="qualified"
attributeFormDefault="unqualified">
XML Schema Definition for the closed user group
parameter
minOccurs="0"/>
minOccurs="0"/>
minOccurs="0"/>
...