ETSI TS 101 572-2 V2.1.1 (2019-05)

Core Network and Interoperability Testing (INT); Conformance tests; (3GPPTM Release 10); Interworking between SIP-I based circuit-switched core network and other networks; Part 2: SIP-I/SIP NNI Test Suite Structure and Test Purposes (TSS&TP)

RTS/INT-00157-2

General Information

• Status: Published
• Publication Date: 09-May-2019
• Technical Committee: INT - Core Network and Interoperability Testing
• Current Stage: 12 - Completion
• Due Date: 14-May-2019
• Completion Date: 10-May-2019

Standards Content (Sample)

TECHNICAL SPECIFICATION
Core Network and Interoperability Testing (INT);
Conformance tests;
TM
(3GPP Release 10);
Interworking between SIP-I based circuit-switched
core network and other networks;
Part 2: SIP-I/SIP NNI
Test Suite Structure and Test Purposes (TSS&TP)

2 ETSI TS 101 572-2 V2.1.1 (2019-05)

Reference
RTS/INT-00157-2
Keywords
SIP, SIP-I, testing, TSS&TP
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ETSI
3 ETSI TS 101 572-2 V2.1.1 (2019-05)
Contents
Intellectual Property Rights . 5
Foreword. 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 Test Suite Structure (TSS) . 7
5 Test Purposes (TP) . 8
5.1 Introduction. 8
5.1.1 TP naming convention . 8
5.1.2 Test strategy . 8
5.1.3 Test purpose structure . 8
6 Test purposes (TP) . 9
6.1 SIP NNI -SIP-I protocol interworking . 9
6.1.1 Signalling Interworking of a Call from the IP Multimedia Subsystem towards the SIP-I based
circuit-switched core network . 9
6.1.1.1 Sending of INVITE (IAM) . 9
6.1.1.2 Sending of UPDATE . 35
6.1.1.3 Receipt of multiple INVITE request and in-dialog SIP INFO request . 37
6.1.1.4 Sending of 18x provisional responses . 38
6.1.1.5 Sending of the 200 OK (INVITE) . 62
6.1.1.6 Sending of the Release message (REL) . 74
6.1.1.7 Receipt of the Release Message . 80
6.1.1.8 Void . 92
6.1.1.9 Void . 92
6.1.1.10 Void . 92
6.1.2 Signalling Interworking of a Call from SIP-I based circuit-switched core network towards the IP
Multimedia Subsystem . 92
6.1.2.1 Sending of INVITE . 92
6.1.2.2 Updating Precondition Information . 110
6.1.2.3 Sending of ACM and awaiting answer indication . 111
6.1.2.4 Sending of the Call Progress message (CPG) . 128
6.1.2.5 Sending of the Answer Message (ANM) . 140
6.1.2.6 Sending of the 200 OK (INVITE) with encapsulated Connect message (CON) . 149
6.1.2.7 Receipt of Status Codes 3xx, 4xx, 5xx or 6xx . 157
6.1.2.8 Receipt of a BYE . 167
6.1.2.9 Receipt of the Release Message . 171
6.1.2.10 Void . 179
6.1.2.11 Autonomous Release at O-MGCF . 179
6.2 Supplementary Services . 181
6.2.1 Void . 181
6.2.2 Connected line presentation and restriction (COLP/COLR) . 181
6.2.3 Malicious call identification . 187
6.2.4 Subaddressing (SUB) . 188
6.2.5 Call Forwarding Busy (CFB)/ Call Forwarding No Reply (CFNR)/Call Forwarding Unconditional
(CFU) . 194
6.2.6 Explicit Call Transfer (ECT) . 197
6.2.7 Void . 200
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4 ETSI TS 101 572-2 V2.1.1 (2019-05)
6.2.8 Call Hold . 201
6.2.9 Call Completion on busy subscriber . 214
6.2.10 Completion of Calls on No Reply (CCNR) . 214
6.2.11 Terminal Portability (TP) . 215
6.2.12 Conference calling (CONF)/Three-Party Service (3PTY) . 216
6.2.13 Void . 223
6.2.14 Multi-Level Precedence and Pre-emption (MLPP) . 223
6.2.15 Global Virtual Network Service (GVNS) . 225
6.2.16 Reverse charging (REV) . 225
6.2.17 Void . 227
6.2.18 Void . 227
6.3 IMS Supplementary Services . 228
6.3.1 Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) . 228
6.3.2 Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) . 253
6.3.3 Communication Diversion (CDIV) . 259
6.3.4 Conference call (CONF) . 302
6.3.5 Message Waiting Indication (MWI) . 314
6.3.6 Malicious Communication Identification (MCID) . 314
6.3.7 Closed User Group (CUG) . 318
6.3.8 Call Completion Services . 324
6.3.9 Communication Waiting (CW) . 346
Annex A (informative): Bibliography . 348
History . 349

ETSI
5 ETSI TS 101 572-2 V2.1.1 (2019-05)
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 SIP NNI - SIP-I Interworking described in the
clauses 7.2 and 7.3 of ETSI TS 129 235 [1] (Release 10), as identified below:
Part 1: "Protocol Implementation Conformance Statement (PICS)";
Part 2: "SIP-I/SIP NNI 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
6 ETSI TS 101 572-2 V2.1.1 (2019-05)
1 Scope
The present document specifies the Test Suite Structure and Test Purposes for SIP - SIP-I Interworking described in the
clauses 7.2 and 7.3 of ETSI TS 129 235 [1] (Release 10).
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 129 235 (V10.1.0): "Digital cellular telecommunications system (Phase 2+); Universal
Mobile Telecommunications System (UMTS); LTE; Interworking between SIP-I based circuit-
switched core network and other networks (3GPP TS 29.235 version 10.1.0 Release 10)".
[2] ETSI TS 129 163: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; Interworking between the IP Multimedia
(IM) Core Network (CN) subsystem and Circuit Switched (CS) networks (3GPP TS 29.163
Release 8)".
[3] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 1: General concepts".
[4] Recommendation ITU-T T.38: "Procedures for real-time Group 3 facsimile communication over
IP networks".
[5] Void.
[6] ETSI TS 101 572-1: "Core Network and Interoperability Testing (INT); Conformance tests; (3GPP
Release 10); Interworking between SIP-I based circuit-switched core network and other networks;
Part 1: Protocol Implementation Conformance Statement (PICS)".
[7] Recommendation ITU-T Q.735.1 (03/1993): "Stage 3 description for community of interest
supplementary services using Signalling System No. 7 : Closed user group (CUG)".
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.
[i.1] Recommendation ITU-T E.164: "The international public telecommunication numbering plan".
[i.2] IETF RFC 5079: "Rejecting Anonymous Requests in the Session Initiation Protocol (SIP)".
ETSI
7 ETSI TS 101 572-2 V2.1.1 (2019-05)
[i.3] Recommendation ITU-T Q.850: "Usage of cause and location in the Digital Subscriber Signalling
System No. 1 and the Signalling System No. 7 ISDN user part".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI TS 129 235 [1] and the following apply:
Implementation Under Test (IUT): Refer to ISO/IEC 9646-1 [3].
System Under Test (SUT): Refer to ISO/IEC 9646-1 [3].
Test Purpose (TP): Refer to ISO/IEC 9646-1 [3].
3.2 Symbols
For the purposes of the present document, the symbols given in ETSI TS 129 235 [1] apply.
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI TS 129 235 [1] and the following apply:
ACM Address Complete Message
IAM Initial Address Message
IUT Implementation Under Test
oBCI optional Backward Call Indicator
REL RELease message
SUT System Under Test
TP Test Purpose
4 Test Suite Structure (TSS)
The Test Suite Structure is in close alignment with ETSI TS 129 235 [1] and ETSI TS 129 163 [2].
SIP NNI -SIP-I
Basic call Sending_of_INVITE (IAM) TP_101_xxx
TP_102_xxx
TP_103_xxx
TP_104_xxx
TP_105_xxx
TP_106_xxx
TP_107_xxx
SIP-I -SIP NNI
Basic call Sending_of_INVITE TP_201_xxx
TP_202_xxx
TP_203_xxx
TP_204_xxx
TP_205_xxx
TP_206_xxx
TP_207_xxx
TP_208_xxx
TP_209_xxx
TP_211_xxx
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8 ETSI TS 101 572-2 V2.1.1 (2019-05)
PSTN-SS
PSTN-SS/COL TP_302_xxx
PSTN-SS/MCID TP_303_xxx
PSTN-SS/SUB TP_304_xxx
PSTN-SS/CDIV TP_305_xxx
PSTN-SS/ECT TP_306_xxx
PSTN-SS/HOLD TP_308_xxx
PSTN-SS/CCBS TP_309_xxx
PSTN-SS/CCNR TP_310_xxx
PSTN-SS/TP TP_311_xxx
PSTN-SS/CONF TP_312_xxx
PSTN-SS/MLPP TP_314_xxx
PSTN-SS/GVNS TP_315_xxx
PSTN-SS/REV TP_316_xxx
IMS-SS
IMS-SS/OIP-OIR TP_401_xxx
IMS-SS/TIP-TIR TP_402_xxx
IMS-SS/CDIV TP_403_xxx
PSTN-SS/CONF TP_404_xxx
IMS-SS/MCID TP_406_xxx
IMS-SS/CUG TP_407_xxx
IMS-SS/CC/ TP_408_xxx
IMS-SS/CW TP_409_xxx
5 Test Purposes (TP)
5.1 Introduction
5.1.1 TP naming convention
For each requirement in ETSI TS 129 163 [2] a TP is defined.
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 5.1.1-1).
Table 5.1.1-1: TP identifier naming convention scheme
Identifier: TP__
= group 3 digit field representing group reference according to TSS
= TP number 3 digit sequential number (001 to 999)

5.1.2 Test strategy
As the base standard ETSI TS 129 235 [1] and ETSI TS 129 163 [2] 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 101 572-1 [6].
The criteria applied include the following:
• whether or not a test case can be built from the TP is not considered.
5.1.3 Test purpose structure
The test purpose structure is according to the Test Suite Structure (TSS). The Reference column in each Test Purpose
refers to the basic specification except stated explicitly.
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9 ETSI TS 101 572-2 V2.1.1 (2019-05)
6 Test purposes (TP)
6.1 SIP NNI -SIP-I protocol interworking
6.1.1 Signalling Interworking of a Call from the IP Multimedia Subsystem
towards the SIP-I based circuit-switched core network
6.1.1.1 Sending of INVITE (IAM)
TP number TP_101_001 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name Sending of SIP-INVITE request
Test Purpose Ensure that on reception of a SIP-INVITE requesting a session, the I-MGCF sends a
SIP-INVITE request with encapsulated IAM message
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying   100 Trying
Apply post test routine
ETSI
10 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_002 Reference [1], clause 7.2.4
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/1 AND PICS 6.2.1/1 AND PICS 6.2.1/2
Test Purpose name Preconditions support indicated in the Supported header
Test Purpose Ensure that the Preconditions procedure is successful if the support of Precondition is
indicated in the Supported header. The INVITE with encapsulated IAM is immediately sent.
The Nature of connection indicator is set to 'continuity check performed on a previous
circuit' or 'continuity check required'. After the UPDATE was received, a UPDATE is sent
ISUP Parameter values IAM: Nature of connection indicator = 'continuity check performed on a previous circuit' or
'continuity check required'
SIP Parameter values INVITE:
Supported: precondition, 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos none remote sendrecv

183: Require: 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
a=conf:qos remote sendrecv
UPDATE:
SDP a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv

200 OK UPDATE
SDP a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying   100 Trying
 
183 Session Progress 183 Session Progress
 
PRACK PRACK
200 OK (PRACK)   200 OK (PRACK)
UPDATE   UPDATE
200 OK (UPDATE)   200 OK (UPDATE)
Apply post test routine
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11 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_003 Reference [1], clause 7.2.4
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/1 AND PICS 6.2.1/1 AND NOT PICS 6.2.1/2
Test Purpose name Preconditions support indicated in the Supported header
Test Purpose Ensure that the Preconditions procedure is successful if the support of Precondition is
indicated in the Supported header. The INVITE with encapsulated IAM is sent after the
UPDATE was received. The Nature of connection indicator is set to 'continuity check is not
required'
ISUP Parameter values IAM: Nature of connection indicator = 'continuity check is not required'
SIP Parameter values INVITE:
Supported: precondition, 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos none remote sendrecv

183: Require: 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
a=conf:qos remote sendrecv
UPDATE:
SDP a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv

200 OK UPDATE
SDP a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
Comments
Message flows SIP NNI MGCF SIP-I

INVITE
100 Trying 
183 Session Progress 
PRACK 
200 OK (PRACK) 
UPDATE   INVITE (IAM)

200 OK (UPDATE)
Apply post test routine
ETSI
12 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_006 Reference [1], clause 7.2.4
[2], clause 73.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/2 AND PICS 6.2.1/1 AND PICS 6.2.1/2; BICC support
Test Purpose name Preconditions support indicated in the Supported header COT procedure supported
Test Purpose Ensure that the Preconditions procedure is successful if the support of Precondition is
indicated in the Supported header. The internal ISUP Continuity check procedure is not
supported. The INVITE with encapsulated IAM is immediately sent. The Nature of
connection indicator is set to 'COT to be expected'. After the UPDATE was received, an
UPDATE is sent
ISUP Parameter values IAM: Nature of connection indicator = 'COT to be expected'

SIP Parameter values INVITE:
Supported: precondition, 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos none remote sendrecv

183: Require: 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
a=conf:qos remote sendrecv
UPDATE:
SDP a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv

200 OK UPDATE
SDP a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying   100 Trying
 
183 Session Progress 183 Session Progress
 
PRACK PRACK
200 OK (PRACK)   200 OK (PRACK)
UPDATE   UPDATE
200 OK (UPDATE)   200 OK (UPDATE)
Apply post test routine
ETSI
13 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_007 Reference [1], clause 7.2.4
[2], clause 7.3.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/2 AND PICS 6.2.1/1 AND NOT PICS 6.2.1/2
Test Purpose name Preconditions support indicated in the Supported header
Test Purpose Ensure that the Preconditions procedure is successful if the support of Precondition is
indicated in the Supported header. The INVITE with encapsulated IAM) is sent after the
UPDATE was received. The Nature of connection indicator is set to 'no COT to be
expected'
ISUP Parameter values IAM: Nature of connection indicator = 'no COT to be expected'
SIP Parameter values INVITE:
Supported: precondition, 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos none remote sendrecv

183: Require: 100rel
SDP a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
a=conf:qos remote sendrecv
UPDATE:
SDP a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv

200 OK UPDATE
SDP a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
Comments
Message flows SIP NNI MGCF SIP-I

INVITE
100 Trying 
183 Session Progress 
PRACK 
200 OK (PRACK) 
UPDATE   INVITE (IAM)

200 OK (UPDATE)
Apply post test routine
ETSI
14 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_007A Reference [1], clause 7.2.4
[2], clause 7.3.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_SIP-INVITE request/
Selection criteria PICS 6.2.1/1 AND PICS 6.2.1/2
Test Purpose name Preconditions fulfilled indicated in the INVITE request
Test Purpose Ensure that Preconditions are fulfilled is indicated in the SDP received in the INVITE
request. The INVITE with encapsulated IAM) is sent. The Nature of connection indicator is
set to 'no COT to be expected'
ISUP Parameter values IAM: Nature of connection indicator = 'continuity check is not required'
or
IAM: Nature of connection indicator = 'no COT to be expected'
SIP Parameter values INVITE:
Supported: precondition, 100rel
SDP a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local sendrecv
a=des:qos none remote sendrecv

SDP a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local sendrecv
a=des:qos mandatory remote sendrecv
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
180 Ringing   180 Ringing (ACM)
PRACK   PRACK
200 OK (PRACK)   200 OK (PRACK)
Apply post test routine
TP number TP_101_010 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_SIP-INVITE request/
Selection criteria
Test Purpose name Unsupported media type is rejected 488 is sent
Test Purpose Ensure that an unsupported media type is rejected a 488 Not Acceptable Here final
response is sent to the calling user
ISUP Parameter values
SIP Parameter values INVITE:
SDP: m= video 4713 RTP/AVP 31
Comments
Message flows SIP NNI MGCF SIP-I
INVITE 
488 Not Acceptable Here 
ACK 
ETSI
15 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_011 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name Unsupported media type is rejected session successful
Test Purpose Ensure that an unsupported media type is rejected. The SUT sends in the SDP answer the
port number '0' for the concerned media type
ISUP Parameter values
SIP Parameter values INVITE:
SDP: m=audio 4711 RTP/AVP 8
m= video 4713 RTP/AVP 31
180 Ringing or 183 Session Progress
SDP: m=audio RTP/AVP 8
mvideo 0 RTP/AVP 31
Comments
Message flows SIP NNI MGCF SIP-I
 
INVITE INVITE (IAM)

100 Trying
CASE A
180 Ringing   180 Ringing (ACM)

CASE B
 
183 Session Progress 183 Session Progress
(ACM)
Apply post test routine
TP number TP_101_012 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name Unsupported codec is deselected
Test Purpose Ensure that the SUT removes a codec from the codec list in the SDP answer if the codec is
an unsupported codec
ISUP Parameter values
SIP Parameter values INVITE:
SDP: m=audio 4711 RTP/AVP 8

180 Ringing or 183 Session Progress
SDP: m=audio RTP/AVP 8
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying 
CASE A
 
180 Ringing 180 Ringing (ACM)

CASE B
183 Session Progress   183 Session Progress
(ACM)
Apply post test routine
ETSI
=
16 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_013 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name INVITE request without SDP offer received
Test Purpose Ensure that on receipt of an INVITE request without a SDP offer, the SUT sends a SDP
offer in the first reliable non-failure message
ISUP Parameter values
SIP Parameter values INVITE:
Supported: 100rel
180 Ringing or 183 Session Progress
SDP: m=audio 4711 RTP/AVP 8
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)

100 Trying
CASE A
180 Ringing   180 Ringing (ACM)
PRACK   PRACK
200 OK PRACK   200 OK PRACK

CASE B
 
183 Session Progress 183 Session Progress
(ACM)
 
PRACK PRACK
 
200 OK PRACK 200 OK PRACK
Apply post test routine
TP number TP_101_014 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name To header tag is sent in the first provisional response
Test Purpose Ensure that a To header tag is contained in the first provisional response
ISUP Parameter values
SIP Parameter values INVITE:
To:
180 Ringing or 183 Session Progress: To: ;
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying 
CASE A
180 Ringing   180 Ringing (ACM)

CASE B
183 Session Progress   183 Session Progress
(ACM)
Apply post test routine
ETSI
17 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_015 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria
Test Purpose name Coding of called party number
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received. In the encapsulated IAM
• In case of the 'CC' of the received INVITE request URI is equal to the country code in
which the next hop terminates: remove 'CC' from the user info and send the remaining
part as digits in the called party number. The nature of address indicator is set to
'National (Significant) number'
• In case of the 'CC' of the received INVITE request URI is not equal to the country
code in which the next hop terminates: send the unchanged part of the request URI
without '+' as digits in the called party number. The nature of address indicator is set to
'International number'
The internal Network Number Indicator = 'routing to internal network number not allowed'
Numbering Plan Indicator = 'ISDN (Telephony) numbering plan (Recommendation
ITU-T E.164 [i.1])'
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
 
INVITE INVITE (IAM)

100 Trying
Apply post test routine
TP number TP_101_016 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.1
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.2.1/21
Test Purpose name SendingCompleteIndication is mapped into a hex digit 'F' in the called party number
Test Purpose Ensure that on receipt of a PSTN XML SendingCompleteIndication element a hex digit 'F'
is sent as theIf the INVITE with encapsulate
last digit in the called party number
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)

100 Trying
Apply post test routine
ETSI
18 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_017 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.2
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/1
Test Purpose name Nature of connection indicator
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received
The nature of connection indicator in the encapsulated IAM is set
Satellite indicator = 'no satellite circuit in the connection'
Continuity check indicator = 'continuity check not required' or 'continuity check required'
or 'continuity check performed on a previous circuit'
Echo control device indicator
• TMR audio 3,1 kHz or speech = outgoing echo control device included
• TMR 64 kBit/s or HLC 'Facsimile Group 2/3' = 'outgoing echo control device not
included'
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
 
INVITE INVITE (IAM)
100 Trying 
Apply post test routine
TP number TP_101_018 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.2
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.1.1/2
Test Purpose name Nature of connection indicator
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received. In the encapsulated IAM the nature of connection indicator is set
Satellite indicator = 'no satellite circuit in the connection'
Continuity check indicator = 'no COT to be expected or 'COT to be expected'
Echo control device indicator = outgoing echo control device included
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
 
INVITE INVITE (IAM)
100 Trying 
Apply post test routine
ETSI
19 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_019 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.3
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria NOT PICS 6.2.1/5
Test Purpose name Forward Call indicator
Test Purpose Ensure that an INITE (IAM) is sent after an INVITE request was received. If no PSTN XML
attachment is present and the TMR is set to audio, the Forward call indicator is coded as
follows:
• End-to-end method indicator = ('00') no end-to-end method available (only link-by-link
method available)
• Interworking indicator = ('1') interworking encountered
• End-to-end information indicator = ('0') no end-to-end information available
• ISDN user part/BICC indicator = ('0') ISDN user part/BICC not used all the way
• ISDN user part/BICC preference indicator = ('01') ISDN user part/BICC not required all
the way
• ISDN access indicator = ('0') originating access non-ISDN
• SCCP method indicator = ('00') no indication
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying 
Apply post test routine
TP number TP_101_020 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.3
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria NOT PICS 6.2.1/5 AND NOT PICS 6.2.1/6
Test Purpose name Forward Call indicator
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received. If no PSTN XML attachment is present and the TMR 64 kBit/s has no impact of
the coding of the Forward call indicator. The Forward call indicator is coded as follows:
• End-to-end method indicator = ('00') no end-to-end method available (only link-by-link
method available)
• Interworking indicator = ('1') interworking encountered
• End-to-end information indicator = ('0') no end-to-end information available
• ISDN user part/BICC indicator = ('0') ISDN user part/BICC not used all the way
• ISDN user part/BICC preference indicator = ('01') ISDN user part/BICC not required all
the way
• ISDN access indicator = ('0') originating access non-ISDN
• SCCP method indicator = ('00') no indication
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)

100 Trying
Apply post test routine
ETSI
20 ETSI TS 101 572-2 V2.1.1 (2019-05)
TP number TP_101_021 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.3
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria NOT PICS 6.2.1/5 AND PICS 6.2.1/6
Test Purpose name Forward Call indicator
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received. If no PSTN XML attachment is present and the TMR 64 kBit/s has impact of the
coding of the Forward call indicator, the Forward call indicator is coded as follows:
• End-to-end method indicator = ('00') no end-to-end method available (only link-by-link
method available)
• Interworking indicator = ('0') no interworking encountered
• End-to-end information indicator = ('0') no end-to-end information available
• ISDN user part/BICC indicator = ('1') ISDN user part/BICC used all the way
• ISDN user part/BICC preference indicator = ('01') ISDN user part/BICC not required all
the way
• ISDN access indicator = ('1') originating access ISDN
• SCCP method indicator = ('00') no indication
ISUP Parameter values
SIP Parameter values
Comments
Message flows SIP NNI MGCF SIP-I
INVITE   INVITE (IAM)
100 Trying 
Apply post test routine
TP number TP_101_022 Reference [1], clause 7.2.1
[2], clause 7.2.3.1.2.3
TSS reference SIP NNI - SIP-I/Basic call/Sending_of_ SIP-INVITE request/
Selection criteria PICS 6.2.1/5
Test Purpose name Forward Call indicator
Test Purpose Ensure that an INVITE with encapsulated IAM is sent after an INVITE request was
received. If the PSTN XML attachment is present the ProgressIndicator value
ProgressDescription = 6, the Forward call indicator is coded as follows:
• End-to-end method indicator = ('00') no end-to-end method available (only link-by-link
method available)
• Interworking indicator = ('0') no interworking encountered
• End-to-end information indicator = ('0') no end-to-end information available
• ISDN user part/BICC indicator = ('1') ISDN user part/BICC used all the way
• ISDN user part/BICC preference indicator = ('01') ISDN user part/BICC not required all
the way
• ISDN
...