ETSI TS 101 597-2 V2.1.1 (2019-01)

Core Network and Interoperability Testing (INT); Closed User Group (CUG) using IP Multimedia (IM) Core Network (CN) subsystem; Conformance Test Specification (3GPP™ Release 12); Part 2: Test Suite Structure and Test Purposes (TSS&TP)

RTS/INT-00150-2

General Information

• Status: Published
• Publication Date: 16-Jan-2019
• Technical Committee: INT - Core Network and Interoperability Testing
• Current Stage: 12 - Completion
• Due Date: 15-Feb-2019
• Completion Date: 17-Jan-2019

Standards Content (Sample)

ETSI TS 101 597-2 V2.1.1 (2019-01)






TECHNICAL SPECIFICATION
Core Network and Interoperability Testing (INT);
Closed User Group (CUG) using IP Multimedia (IM) Core
Network (CN) subsystem;
Conformance Test Specification (3GPP™ Release 12);
Part 2: Test Suite Structure and Test Purposes (TSS&TP)

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Release 12 2 ETSI TS 101 597-2 V2.1.1 (2019-01)



Reference
RTS/INT-00150-2
Keywords
conformance, CUG, IMS, testing, TSS&TP
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Release 12 3 ETSI TS 101 597-2 V2.1.1 (2019-01)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definition of terms, symbols and abbreviations . 5
3.1 Terms . 5
3.2 Symbols . 5
3.3 Abbreviations . 6
4 Test Suite Structure (TSS) . 7
4.0 Test Suite Structure table . 7
4.1 Configuration . 7
4.1.0 Introduction. 7
4.1.1 Testing of the AS . 7
4.1.2 Testing of the UE . 8
5 Test Purposes (TP) . 8
5.1 Introduction . 8
5.1.1 TP naming convention . 8
5.1.2 Test strategy . 9
5.2 Test Purposes for Closed User Group (CUG) . 9
5.2.1 Actions at the originating UA . 9
5.2.2 Actions at the AS of the originating User . 11
5.2.2.1 CUG without preference . 11
5.2.2.2 CUG without preference + OAE . 16
5.2.2.3 CUG without preference + OAI . 21
5.2.2.4 CUG with preference . 26
5.2.2.5 CUG with preference + OAE . 32
5.2.2.6 CUG with preference + OAI . 38
5.2.2.7 No CUG . 45
5.2.3 Actions at the AS of the terminating user . 47
5.2.3.1 CUG with OA not allowed . 47
5.2.3.2 CUG with OA allowed . 50
5.2.3.3 No CUG . 54
5.3 Interaction with other services . 55
5.3.1 Conference calling (CONF) . 55
5.3.2 Communication Diversion Services (CDIV) . 56
5.3.3 Explicit Communication Transfer (ECT) . 74
History . 78


ETSI

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Release 12 4 ETSI TS 101 597-2 V2.1.1 (2019-01)
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
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Core Network and Interoperability
Testing (INT).
The present document is part 2 of a multi-part deliverable covering the Conformance Test Specification of Closed User
Group (CUG) using IP Multimedia (IM) Core Network (CN) subsystem, as identified below:
Part 1: "Protocol Implementation Conformance Statement (PICS)";
Part 2: "Test Suite Structure and Test Purposes (TSS&TP)".
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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Release 12 5 ETSI TS 101 597-2 V2.1.1 (2019-01)
1 Scope
The present document provides the Test Suite Structure and Test Purposes for the Closed User Group (CUG) using IP
Multimedia (IM) Core Network (CN) subsystem [1] in compliance with the relevant requirements.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 124 654: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; Closed User Group (CUG) using IP Multimedia (IM)
Core Network (CN) subsystem, Protocol Specification (3GPP TS 24.654 Release 12)".
[2] ETSI TS 101 597-1: "Core Network and Interoperability Testing (INT); Closed User Group
(CUG) using IP Multimedia (IM) Core Network (CN) subsystem; Conformance Test Specification
(3GPPTM Release 12); Part 1: Protocol Implementation Conformance Statement (PICS)".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
Not applicable.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI TS 124 654 [1] apply.
ETSI

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Release 12 6 ETSI TS 101 597-2 V2.1.1 (2019-01)
3.2 Symbols
For the purposes of the present document, the symbols given in ETSI TS 124 654 [1] and the following apply:
Gm Reference point: supports the communication between UE and IMS
Mw Reference point allows the communication and forwarding of signalling messaging between
CSCFs
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI TS 124 654 [1] and the following apply:
AS Application Server
CD Communication Deflection
CDIV Communication DIVersion service
CFB Communication Forwarding on Busy
CFNL Communication Forwarding on Not Logged-in
CFNR Communication Forwarding on No Reply
CFU Communication Forwarding Unconditional
CN Core Network
CONF CONFerence calling
CSCF Call Session Control Function
CUG Closed User Group
ECT Explicit Communication Transfer
IA Incoming Access
ICB Incoming Communication Barring within a CUG
IM IP Multimedia
IMS IP Multimedia Subsystem
IP Internet Protocol
ISC Reference point between Serving CSCF and Application Server
IUT Implementation Under Test
NNI Network-to-Network Interface
OA Outgoing Access
OAE Outgoing Access, Explicit request required
OAI Outgoing Access, Implicit outgoing access for all communications
OCB Outgoing Communication Barring within a CUG
PIXIT Protocol Implementation eXtra Information for Testing
SIP Session Initiation Protocol
SS Supplementary Services
SUT System Under Test
TP Test Purposes
TSS Test Suite Structure
UA User Agent
URI Universal Resource Identifier
UE User Equipment
XML eXtensible Markup Language
ETSI

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Release 12 7 ETSI TS 101 597-2 V2.1.1 (2019-01)
4 Test Suite Structure (TSS)
4.0 Test Suite Structure table
Table 4.0-1: Test suite structure
CUG
originating_UE CUG_U01_xxx
originating_AS
 CUG without preference CUG_N01_xxx
 CUG without preference + CUG_N02_xxx
OAE
 CUG without preference + OAI CUG_N03_xxx
 CUG with preference CUG_N04_xxx
 CUG with preference + OAE CUG_N05_xxx
 CUG with preference + OAI CUG_N06_xxx
 No CUG CUG_N07_xxx
terminating_AS
 CUG with OA not allowed CUG_N08_xxx
 CUG with OA allowed CUG_N09_xxx
 No CUG CUG_N10_xxx

Services CONF CUG_N11_xxx
 CDIV CUG_N12_xxx
 ECT CUG_N13_xxx

4.1 Configuration
4.1.0 Introduction
The scope of the present document is to test the signalling and procedural aspects of the stage 3 requirements as
described in ETSI TS 124 654 [1]. The stage 3 description describes the requirements for several network entities and
also the requirements regarding terminal devices. Therefore several interfaces (reference points) are addressed to satisfy
the test of the different entities.
Therefore to test the appropriate entities the configurations below are applicable.
4.1.1 Testing of the AS
The AS entity is responsible for performing and managing services. The ISC interface is the appropriate access point for
testing.

Figure 4.1.1-1: Applicable interface to test AS functionalities
ETSI

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Release 12 8 ETSI TS 101 597-2 V2.1.1 (2019-01)
If the ISC interface is not accessible it is also possible to perform the test of the AS using any NNI (Mw, Mw, Mx)
interface (see figure 4.1.1-2). In case only the Gm interface is accessible this interface can be used instead for testing,
but the verification of all requirements may not be possible.

Figure 4.1.1-2: Applicable interfaces for tests using a (generic) NNI interface
4.1.2 Testing of the UE
There are special clauses in the protocol standard describing the procedures that apply at the originating and terminating
user equipment. Therefore the test configuration in figure 4.1.2-1 has been chosen.

Figure 4.1.2-1: Applicable configuration to test UE functionalities
5 Test Purposes (TP)
5.1 Introduction
5.1.1 TP naming convention
TPs are numbered, starting at 001, within each group. Groups are organized according to the TSS. Additional references
are added to identify the actual test suite and whether it applies to the network or the user (see table 1).
ETSI

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Release 12 9 ETSI TS 101 597-2 V2.1.1 (2019-01)
Table 1: TP identifier naming convention scheme
Identifier: __
= supplementary service: e.g. "CUG"
= type of IUT: U User equipment
N Network entity
= group 2 digit field representing group reference according to TSS
= sequential number (001-999)

5.1.2 Test strategy
As the base standard ETSI TS 124 654 [1] contains no explicit requirements for testing, the TPs were generated as a
result of an analysis of the base standard and the PICS specification ETSI TS 101 597-1 [2]. The criteria applied include
the following:
• Whether or not a test case can be built from the TP is not considered.
5.2 Test Purposes for Closed User Group (CUG)
5.2.1 Actions at the originating UA
TSS TP CUG reference Selection expression
CUG/originating_UE CUG_U01_001 clause 4.5.2.1 PICS 4.5.1/1 AND
PICS 4.6.1/1
Test purpose
Explicit request of CUG service Outgoing Access.
The originating user requests explicitly the CUG service by including in the initial INVITE an xml CUGrequestType
containing the preferred CUG and an outgoing access request set to "true".
Preconditions:
SIP header values:
INVITE:


 TRUE
 [PIXIT]


Comments:
User equipment  Test equipment
   INVITE requesting CUG explicitly

ETSI

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Release 12 10 ETSI TS 101 597-2 V2.1.1 (2019-01)
TSS TP CUG reference Selection expression
CUG/originating_UE CUG_U01_002 clause 4.5.2.1 PICS 4.5.1/1 AND
PICS 4.6.1/1
Test purpose
Explicit request of CUG service without Outgoing Access.
The originating user requests explicitly the CUG service by including in the initial INVITE an xml CUGrequestType
containing the preferred CUG and an outgoing access request set to "false".
Preconditions:
SIP header values:
INVITE:


 FALSE
 [PIXIT]


Comments:
User equipment  Test equipment
   INVITE requesting CUG explicitly

TSS TP CUG reference Selection expression
CUG/originating_UE CUG_U01_003 clause 4.5.2.1 PICS 4.5.1/1 AND
PICS 4.6.1/1 AND
PICS 4.6.1/2
Test purpose
Explicit request of CUG service without CUG index.
The originating user requests explicitly the CUG service by including in the initial INVITE an xml CUGrequestType
containing the preferred CUG and no 'cugIndex' element is present.
Preconditions:
SIP header values:
INVITE:


 FALSE
 [PIXIT]


Comments:
User equipment  Test equipment
   INVITE requesting CUG explicitly

ETSI

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Release 12 11 ETSI TS 101 597-2 V2.1.1 (2019-01)
5.2.2 Actions at the AS of the originating User
5.2.2.1 CUG without preference
TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_001 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE with CUG index, successful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 registered CUGIndex,
forwards an INVITE request containing an xml element cug with
cugInterlockBinaryCode related to registered CUG index,
networkIndicator (PIXIT) and
cugCommunicationIndicator set to "11" (CUG without outgoing access).
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: None designated (-OCB)
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE1:


 FALSE
 [registered CUG index]



INVITE2:
Content-Disposition: …;handling=required

[PIXIT]
[related to registered CUG index]
11

Comments:
Test equipment (Gm) AS Test equipment (ISC, Mw)
INVITE1   INVITE2

ETSI

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Release 12 12 ETSI TS 101 597-2 V2.1.1 (2019-01)
TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_002 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1 AND
PICS 4.7.1/10
Test purpose
CUG without preference + OCB: INVITE with CUG index, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 registered CUGIndex,
rejects the INVITE request by sending a 603 Decline due to Outgoing Communication Barring.
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: OCB
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE:


 FALSE
 [registered CUG index]


Comments:
Test equipment (Gm) AS

INVITE
603 Decline 
ACK 

TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_003 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE with unallocated CUG index, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 unregistered CUGIndex,
rejects the INVITE request by sending a 403 Forbidden due to not allocated CUG index.
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: None designated (-OCB)
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE:


 FALSE
 [unregistered CUG]


403 Forbidden
Reason: Q.850;cause=62
Comments:
Test equipment (Gm) AS
INVITE 
403 Forbidden 
ACK 

ETSI

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Release 12 13 ETSI TS 101 597-2 V2.1.1 (2019-01)
TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_004 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE with CUG index and outgoingAccessRequest = true, successful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 outgoingAccessRequest = true and
 registered CUGIndex,
forwards an INVITE request containing an xml element cug with
cugInterlockBinaryCode related to registered CUG index,
networkIndicator (PIXIT) and
cugCommunicationIndicator set to "11" (CUG without outgoing access).
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: None designated (-OCB)
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE1:


 TRUE
 [registered CUG index]



INVITE2:
Content-Disposition: …;handling=required

[registered CUG index]
[related to registered CUG index]
11

Comments:
Test equipment (Gm) AS Test equipment (ISC, Mw)
INVITE1  
INVITE2

ETSI

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Release 12 14 ETSI TS 101 597-2 V2.1.1 (2019-01)
TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_005 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1 AND
PICS 4.7.1/10
Test purpose
CUG without preference +OCB: INVITE with CUG index and outgoingAccessRequest = true, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 outgoingAccessRequest = true and
 registered CUGIndex,
rejects the INVITE request by sending a 603 Decline due to Outgoing Communication Barring.
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: OCB
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE:


 TRUE
 [registered CUG index]


Comments:
Test equipment (Gm) AS
INVITE 
603 Decline 

ACK

TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_006 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE with unallocated CUG index and outgoingAccessRequest = true, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 outgoingAccessRequest = true and
 unregistered CUGIndex,
rejects the INVITE request by sending a 403 Forbidden due to not allocated CUG index.
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: None designated (-OCB)
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE:


 TRUE
 [unregistered CUG]


403 Forbidden
Reason: Q.850;cause=62
Comments:
Test equipment (Gm) AS
INVITE 
403 Forbidden 

ACK

ETSI

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Release 12 15 ETSI TS 101 597-2 V2.1.1 (2019-01)
TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_007 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE without CUG index, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 outgoingAccessRequest = false,
rejects the INVITE request by sending a 403 Forbidden due to missing CUGindex.
Preconditions: Originating user has subscribed to CUG
Options for registered CUG index:
Intra CUG restrictions: None designated (-OCB)
Options for public identity in use:
Preferential CUG: None designated
Outgoing access: not allowed
SIP header values:
INVITE:


 FALSE


403 Forbidden
Reason: Q.850;cause=62
Comments:
Test equipment (Gm) AS

INVITE
403 Forbidden 
ACK 

TSS TP CUG reference Selection expression
CUG/originating_AS/CUG without preference CUG_N01_008 clause 4.5.2.4 PICS 4.5.1/2 AND
PICS 4.7.1/1
Test purpose
CUG without preference: INVITE without CUG index and with outgoingAccessRequest = true, unsuccessful.
Ensure that the SUT on receipt of an INVITE request containing an xml element cug with
cugCallOperation containing
 outgoingAccessRequest = true,
rejects the INVITE
...