ETSI TS 124 007 V19.5.0 (2026-03)

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Mobile radio interface signalling layer 3; General Aspects (3GPP TS 24.007 version 19.5.0 Release 19)

RTS/TSGC-0124007vj50

General Information

• Status: Not Published
• Technical Committee: 3GPP CT 1 - MM/CC/SM [lu] (formely CN1)
• Current Stage: 8 - Draft receipt by ETSI Secretariat
• Completion Date: 10-Mar-2026

Standards Content (Sample)

TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
Mobile radio interface signalling layer 3;
General Aspects
(3GPP TS 24.007 version 19.5.0 Release 19)

3GPP TS 24.007 version 19.5.0 Release 19 1 ETSI TS 124 007 V19.5.0 (2026-03)

Reference
RTS/TSGC-0124007vj50
Keywords
5G,GSM,LTE,UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
and/or governmental rule and/or regulation and further, no representation or warranty is made of merchantability or fitness
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3GPP TS 24.007 version 19.5.0 Release 19 2 ETSI TS 124 007 V19.5.0 (2026-03)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are 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 IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Legal Notice
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. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 3GPP and ETSI identities can be found at 3GPP to ETSI numbering cross-referencing.
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
3GPP TS 24.007 version 19.5.0 Release 19 3 ETSI TS 124 007 V19.5.0 (2026-03)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 12
1 Scope . 13
2 References . 13
3 Definitions and abbreviations . 15
3.1 Definitions . 15
3.2 Abbreviations . 15
4 Introduction . 16
4.1 General . 16
4.2 Applicability of functional blocks . 18
4.3 Technique of description . 18
4.3.1 Service description . 18
4.3.2 Abstract service primitives . 18
4.3.3 Protocols and peer-to-peer communication . 18
4.3.4 Contents of layer 3 related Technical Specifications . 20
5 Structure of layer 3 functions . 21
5.1 Basic groups of functions . 21
5.2 Protocol architecture. 23
6 Services provided by signalling layer 3 at the MS side . 35
6.1 Registration services. 35
6.1.1 Service state diagram for MS not supporting GPRS service . 36
6.1.2 Service primitives . 36
6.1.2.1 MMR_REG_REQ . 36
6.1.2.2 MMR_REG_CNF . 36
6.1.2.3 Void. 36
6.1.2.4 MMR_NREG_REQ . 36
6.1.2.5 MMR_NREG_IND . 37
6.1.3 Registration Services for CTS-Services . 37
6.1.3.1 MMR_CTS _ATTACH_REQ. 37
6.1.3.2 MMR_CTS _ATTACH_CNF . 37
6.1.3.3 MMR_CTS _ATTACH_REJ . 37
6.1.3.4 MMR_CTS _DETACH_IND . 37
6.1.3.5 MMR_CTS _ENROLL_REQ . 37
6.1.3.6 MMR_CTS _ENROLL_CNF . 37
6.1.3.7 MMR_CTS _ENROLL_REJ . 37
6.1.3.8 MMR_CTS _DE_ENROLL_IND . 38
6.2 Call Control services . 38
6.2.1 Service state diagram . 38
6.2.2 Service primitives . 41
6.2.2.1 MNCC_SETUP_REQ . 41
6.2.2.2 MNCC_SETUP_IND . 41
6.2.2.3 MNCC_SETUP_RES . 41
6.2.2.4 MNCC_SETUP_CNF . 41
6.2.2.5 MNCC_SETUP_COMPL_REQ . 41
6.2.2.6 MNCC_SETUP_COMPL_IND . 42
6.2.2.7 MNCC_REJ_REQ . 42
6.2.2.8 MNCC_REJ_IND . 42
6.2.2.9 MNCC_CALL_CONF_REQ . 42
6.2.2.10 MNCC_CALL_PROC_IND . 42
6.2.2.11 MNCC_PROGRESS_IND . 42
ETSI
3GPP TS 24.007 version 19.5.0 Release 19 4 ETSI TS 124 007 V19.5.0 (2026-03)
6.2.2.12 MNCC_ALERT_REQ . 42
6.2.2.13 MNCC_ALERT_IND . 42
6.2.2.14 MNCC_NOTIFY_REQ . 42
6.2.2.15 MNCC_NOTIFY_IND . 42
6.2.2.16 MNCC_DISC_REQ . 42
6.2.2.17 MNCC_DISC_IND . 42
6.2.2.18 MNCC_REL_REQ . 43
6.2.2.19 MNCC_REL_IND . 43
6.2.2.20 MNCC_REL_CNF . 43
6.2.2.21 MNCC_FACILITY_REQ . 43
6.2.2.22 MNCC_FACILITY_IND . 43
6.2.2.23 MNCC_START_DTMF_REQ . 43
6.2.2.24 MNCC_START_DTMF_CNF. 43
6.2.2.25 MNCC_STOP_DTMF_REQ . 43
6.2.2.26 MNCC_STOP_DTMF_CNF . 43
6.2.2.27 MNCC_MODIFY_REQ . 43
6.2.2.28 MNCC_MODIFY_IND . 43
6.2.2.29 MNCC_MODIFY_RES . 43
6.2.2.30 MNCC_MODIFY_CNF . 44
6.2.2.31 MNCC_SYNC_IND . 44
6.3 Call independent Supplementary Services Support . 44
6.3.1 Service state diagram . 44
6.3.2 Service primitives . 44
6.3.2.1 MNSS_BEGIN_REQ . 45
6.3.2.2 MNSS_BEGIN_IND. 45
6.3.2.3 MNSS_FACILITY_REQ . 45
6.3.2.4 MNSS_FACILITY_IND . 45
6.3.2.5 MNSS_END_REQ . 45
6.3.2.6 MNSS_END_IND . 45
6.4 Short Message Services Support . 45
6.5 Session Management Services for GPRS-Services . 45
6.5.1 Session Management Services for SMREG-SAP . 46
6.5.1.1 SMREG-PDP-ACTIVATE-REQ . 46
6.5.1.2 SMREG-PDP-ACTIVATE-CNF . 46
6.5.1.3 SMREG-PDP-ACTIVATE-REJ . 46
6.5.1.4 SMREG-PDP-ACTIVATE-IND . 47
6.5.1.5 SMREG-PDP-DEACTIVATE-REQ. 47
6.5.1.6 SMREG-PDP-DEACTIVATE-CNF . 47
6.5.1.7 SMREG-PDP-DEACTIVATE-IND . 47
6.5.1.8 SMREG-PDP-MODIFY-IND . 47
6.5.1.9 Void. 47
6.5.1.10 Void. 47
6.5.1.11 Void. 47
6.5.1.12 Void. 47
6.5.1.13 Void. 47
6.5.1.14 SMREG-PDP-ACTIVATE-REJ-RSP . 47
6.5.1.15 SMREG-PDP-ACTIVATE-SEC-REQ . 47
6.5.1.16 SMREG-PDP-ACTIVATE-SEC-CNF . 48
6.5.1.17 SMREG-PDP-ACTIVATE-SEC-REJ. 48
6.5.1.18 SMREG-PDP-MODIFY-REQ . 48
6.5.1.19 SMREG-PDP-MODIFY-CNF . 48
6.5.1.20 SMREG-PDP-MODIFY-REJ . 48
6.5.1.21 SMREG-MBMS-ACTIVATE-REQ . 48
6.5.1.22 SMREG-MBMS-ACTIVATE-CNF . 48
6.5.1.23 SMREG-MBMS-ACTIVATE-REJ . 48
6.5.1.24 SMREG-MBMS-ACTIVATE-REJ-RSP . 48
6.5.1.25 SMREG-MBMS-ACTIVATE-IND . 48
6.5.2 Session Management Services for SNSM-SAP (GSM only) . 50
6.5.3 Session Management Services for RABMSM-SAP (UMTS only). 50
6.5.3.1 RABMSM-ACTIVATE-IND. 50
6.5.3.2 RABMSM-ACTIVATE-RSP. 51
6.5.3.3 RABMSM-DEACTIVATE-IND . 51
ETSI
3GPP TS 24.007 version 19.5.0 Release 19 5 ETSI TS 124 007 V19.5.0 (2026-03)
6.5.3.4 RABMSM-DEACTIVATE-RSP . 51
6.5.3.5 RABMSM-DEACTIVATE-REQ . 51
6.5.3.6 RABMSM-MODIFY-IND . 51
6.5.3.7 RABMSM-MODIFY-RSP . 51
6.5.3.8 RABMSM-STATUS-REQ . 51
6.6 Registration Services for GPRS-Services . 51
6.6.1 Registration Services for GMMREG-SAP . 52
6.6.1.1 GMMREG-ATTACH-REQ . 52
6.6.1.2 GMMREG-ATTACH-CNF . 52
6.6.1.3 GMMREG-ATTACH-REJ . 52
6.6.1.4 GMMREG-DETACH-REQ . 52
6.6.1.5 GMMREG-DETACH-CNF . 52
6.6.1.6 GMMREG-DETACH-IND . 52
6.7 Services provided to SNDCP entities by GPRS Logical Link Control services. 53
6.7.1 Service state diagram for QoS1-SAP, QoS2-SAP, QoS3-SAP and QoS4-SAP . 54
6.7.2 Service primitives for QoS1-SAP, QoS2-SAP, QoS3-SAP and QoS4-SAP . 54
6.7.2.1 LL-ESTABLISH-REQ . 54
6.7.2.2 LL-ESTABLISH-CNF . 55
6.7.2.3 LL-ESTABLISH-IND. 55
6.7.2.4 LL-ESTABLISH-RSP. 55
6.7.2.5 LL-RELEASE-REQ . 55
6.7.2.6 LL-RELEASE-CNF . 55
6.7.2.7 LL-RELEASE-IND. 55
6.7.2.8 LL-XID-REQ . 55
6.7.2.9 LL-XID-IND . 55
6.7.2.10 LL-XID-RSP . 55
6.7.2.11 LL-XID-CNF . 55
6.7.2.12 LL-DATA-REQ . 55
6.7.2.13 LL-DATA-CNF . 55
6.7.2.14 LL-DATA-IND . 55
6.7.2.15 LL-UNITDATA-REQ . 55
6.7.2.16 LL-UNITDATA-IND . 56
6.7.2.17 LL-STATUS-IND . 56
6.8 Location services at the type A LMU side . 56
6.8.1 Service state diagram . 56
6.8.2 Service primitives . 57
6.8.2.1 MNLCS_BEGIN_REQ . 57
6.8.2.2 MNLCS_BEGIN_IND . 57
6.8.2.3 MNLCS_FACILITY_REQ . 57
6.8.2.4 MNLCS_FACILITY_IND . 57
6.8.2.5 MNLCS_END_REQ . 57
6.8.2.6 MNLCS_END_IND . 57
7 Services provided by signalling layer 3 on the Network side . 57
7.1 Call control services . 57
7.1.1 Service state diagram . 58
7.1.2 Service primitives . 61
7.1.2.1 MNCC_SETUP_REQ . 61
7.1.2.2 MNCC_SETUP_IND . 61
7.1.2.3 MNCC_SETUP_RSP . 61
7.1.2.4 MNCC_SETUP_CNF . 61
7.1.2.5 MNCC_SETUP_COMPL_REQ . 61
7.1.2.6 MNCC_SETUP_COMPL_IND . 62
7.1.2.7 MNCC_REJ_REQ . 62
7.1.2.8 MNCC_REJ_IND . 62
7.1.2.9 MNCC_CALL_CONF_IND . 62
7.1.2.10 MNCC_CALL_PROC_REQ . 62
7.1.2.11 MNCC_PROGRESS_REQ . 62
7.1.2.12 MNCC_ALERT_REQ . 62
7.1.2.13 MNCC_ALERT_IND . 62
7.1.2.14 MNCC_NOTIFY_REQ . 62
7.1.2.15 MNCC_NOTIFY_IND . 62
ETSI
3GPP TS 24.007 version 19.5.0 Release 19 6 ETSI TS 124 007 V19.5.0 (2026-03)
7.1.2.16 MNCC_DISC_REQ . 62
7.1.2.17 MNCC_DISC_IND . 62
7.1.2.18 MNCC_REL_REQ . 63
7.1.2.19 MNCC_REL_IND . 63
7.1.2.20 MNCC_REL_CNF . 63
7.1.2.21 MNCC_FACILITY_REQ . 63
7.1.2.22 MNCC_FACILITY_IND . 63
7.1.2.23 MNCC_START_DTMF_IND . 63
7.1.2.24 MNCC_START_DTMF_RSP . 63
7.1.2.25 MNCC_STOP_DTMF_IND . 63
7.1.2.26 MNCC_STOP_DTMF_RSP . 63
7.1.2.27 MNCC_MODIFY_REQ . 63
7.1.2.28 MNCC_MODIFY_IND . 63
7.1.2.29 MNCC_MODIFY_RES . 63
7.1.2.30 MNCC_MODIFY_CNF . 63
7.2 Call independent Supplementary Services Support . 64
7.2.1 Service state diagram . 64
7.2.2 Service primitives . 64
7.2.2.1 MNSS_BEGIN_REQ . 64
7.2.2.2 MNSS_BEGIN_IND. 65
7.2.2.3 MNSS_FACILITY_REQ . 65
7.2.2.4 MNSS_FACILITY_IND . 65
7.2.2.5 MNSS_END_REQ . 65
7.2.2.6 MNSS_END_IND . 65
7.3 Short Message Services Support . 65
7.4 Services provided to SNDCP and SMS entities by GPRS Logical Link Control services . 65
7.4.1 Service state diagram for QoS1-SAP, QoS2-SAP, QoS3-SAP and QoS4-SAP . 65
7.4.2 Service primitives for QoS1-SAP, QoS2-SAP, QoS3-SAP and QoS4-SAP . 66
7.4.2.1 LL-ESTABLISH-REQ . 66
7.4.2.2 LL-ESTABLISH-CNF . 66
7.4.2.3 LL-ESTABLISH-IND. 66
7.4.2.4 LL-ESTABLISH-RSP. 66
7.4.2.5 LL-RELEASE-REQ . 66
7.4.2.6 LL-RELEASE-CNF . 66
7.4.2.7 LL-RELEASE-IND. 66
7.4.2.8 LL-XID-REQ . 66
7.4.2.9 LL-XID-IND . 67
7.4.2.10 LL-XID-RSP . 67
7.4.2.11 LL-XID-CNF . 67
7.4.2.12 LL-DATA-REQ . 67
7.4.2.13 LL-DATASENT-IND . 67
7.4.2.14 LL-DATA-CNF . 67
7.4.2.15 LL-DATA-IND . 67
7.4.2.16 LL-UNITDATA-REQ . 67
7.4.2.17 LL-UNITDATA-IND . 67
7.4.2.18 LL-STATUS-IND . 67
7.5 Session Management Services for GPRS and MBMS . 67
7.5.1 Session Management Services for SMREG-SAP . 68
7.5.1.1 SMREG-PDP-ACTIVATE-REQ . 68
7.5.1.2 SMREG-PDP-ACTIVATE-REJ . 68
7.5.1.3 SMREG-PDP-DEACTIVATE-REQ. 68
7.5.1.4 SMREG-PDP-DEACTIVATE-CNF . 68
7.5.1.5 SMREG-PDP-MODIFY-REQ . 68
7.5.1.6 SMREG-PDP-MODIFY-CNF . 68
7.5.1.7 SMREG-PDP-MODIFY-REJ . 69
7.5.1.8 SMREG-MBMS-ACTIVATE-REQ . 69
7.5.1.9 SMREG-MBMS-ACTIVATE-REJ . 69
7.5.2 Session Management Services for SNSM-SAP . 69
7.6 Location services at the Network side . 69
7.6.1 Service state diagram . 69
7.6.2 Service primitives . 70
7.6.2.1 MNLCS_BEGIN_REQ . 70
ETSI
3GPP TS 24.007 version 19.5.0 Release 19 7 ETSI TS 124 007 V19.5.0 (2026-03)
7.6.2.2 MNLCS_BEGIN_IND . 71
7.6.2.3 MNLCS_FACILITY_REQ . 71
7.6.2.4 MNLCS_FACILITY_IND . 71
7.6.2.5 MNLCS_END_REQ . 71
7.6.2.6 MNLCS_END_IND . 71
8 Services assumed from signalling layers 1 and 2 . 71
8.1 Priority . 71
8.2 Unacknowledged information transfer . 71
8.3 Acknowledged information transfer . 71
8.4 Random access . 72
8.5 Channel management and measurements . 72
9 Interlayer service interfaces on the MS side. 72
9.1 Services provided by the Radio Resource Management entity . 72
9.1.1 Service state diagram . 73
9.1.2 Service primitives .
...