ETSI TS 148 008 V12.2.0 (2015-07)

ETSI TS 1148 008 V12.2.0 (201515-07)






TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
Mobile Switching Centntre - Base Station system (M (MSC-BSS)
interface;
Layayer 3 specification
(3GPP TS 48.0.008 version 12.2.0 Release 12 12)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

---------------------- Page: 1 ----------------------
3GPP TS 48.008 version 12.2.0 Release 12 1 ETSI TS 148 008 V12.2.0 (2015-07)



Reference
RTS/TSGG-0248008vc20
Keywords
GSM
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
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 only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
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.

© European Telecommunications Standards Institute 2015.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3GPP TS 48.008 version 12.2.0 Release 12 2 ETSI TS 148 008 V12.2.0 (2015-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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 (http://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.
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
http://webapp.etsi.org/key/queryform.asp.
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

---------------------- Page: 3 ----------------------
3GPP TS 48.008 version 12.2.0 Release 12 3 ETSI TS 148 008 V12.2.0 (2015-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 11
1 Scope . 12
1.1 References . 12
1.2 Definitions and Abbreviations . 14
2 Application to interface structures . 15
2.1 The BSS Operation and Maintenance Application Part . 15
2.2 The Direct Transfer Application Part . 15
2.3 The BSS Management Application Part . 16
2.4 Handling of abnormal events related to the BSSAP Header . 16
3 The BSS Management Application Part . 16
3.1 BSSMAP Procedures . 16
3.1.1 Assignment . 17
3.1.1.1 Successful Operation . 17
3.1.1.2 Assignment Failure . 20
3.1.1.3 Abnormal Conditions . 21
3.1.2 Blocking and Unblocking . 22
3.1.2.1 Successful Operation . 22
3.1.2.2 Abnormal Conditions . 23
3.1.2.2.1 Applying to the Single Circuit Block Procedure . 23
3.1.2.2.2 Applying to the Circuit Group Block Procedure . 24
3.1.3 Resource Indication . 25
3.1.3.1 Successful Operation . 25
3.1.4 Reset . 26
3.1.4.1 Global Reset Procedure . 26
3.1.4.1.1 Reset at the BSS . 26
3.1.4.1.2 Reset at the MSC . 26
3.1.4.1.3 Abnormal Conditions . 27
3.1.4.1.3.1 Abnormal Condition at the BSS. 27
3.1.4.1.3.2 Abnormal Condition at the MSC . 27
3.1.4.2 Reset Circuit . 27
3.1.4.2.1 Reset Circuit at the BSS . 27
3.1.4.2.2 Reset Circuit at the MSC . 27
3.1.4.2.3 Abnormal conditions . 28
3.1.4.3 Reset IP Resource . 28
3.1.4.3.1 Reset IP Resource procedure initiated by the BSS . 28
3.1.4.3.2 Reset IP Resource procedure initiated by the MSC . 28
3.1.4.3.3 Abnormal conditions . 29
3.1.5 External Handover . 29
3.1.5.1 Handover Required Indication . 29
3.1.5.1.1 Generation of the HANDOVER REQUIRED message . 30
3.1.5.1.2 Abnormal conditions for DTM Handover . 32
3.1.5.2 Handover Resource allocation . 33
3.1.5.2.1 Operation of the procedure . 33
3.1.5.2.2 Handover Resource Allocation Failure . 37
3.1.5.2.3 Abnormal conditions . 38
3.1.5.3 Handover execution . 38
3.1.5.3.1 Operation of the procedure . 39
3.1.5.3.2 Handover Failure . 40
3.1.5.3.3 Abnormal Conditions . 41
3.1.5a Handover from GSM to another System. 41
3.1.5a.1 Generation of the HANDOVER REQUIRED message for intersystem handover . 42
ETSI

---------------------- Page: 4 ----------------------
3GPP TS 48.008 version 12.2.0 Release 12 4 ETSI TS 148 008 V12.2.0 (2015-07)
3.1.5a.2 Inter-System Handover Resource Allocation Failure . 43
3.1.5a.3 Intersystem handover Execution . 44
3.1.5a.4 Inter System Handover Failure . 45
3.1.5a.5 Abnormal Conditions . 45
3.1.5b Handover from another system to GSM . 45
3.1.5b.1 General . 45
3.1.5b.2 Inter-System Handover Resource Allocation . 46
3.1.5c BSS Internal Handover with MSC support . 46
3.1.5c.1 Internal Handover Preparation . 46
3.1.5c.1.1 Internal Handover Required Reject . 47
3.1.5c.2 Internal Handover Execution . 47
3.1.5c.2.1 Internal Handover failure. 48
3.1.5c.2.2 Abnormal Conditions . 48
3.1.5c.3 Internal Handover Enquiry . 49
3.1.6 Internal Intra-Cell Handover Procedure . 49
3.1.7 Internal Inter-Cell Handover Procedure . 50
3.1.8 Handover Candidate Enquiry . 50
3.1.8.1 Successful Operation . 51
3.1.8.2 Abnormal conditions . 51
3.1.9 Release of Radio Resource And Terrestrial Resource . 51
3.1.9.1 Release Due To Transaction Completion . 51
3.1.9.1a Release of radio resources and the terrestrial resources for VGCS/VBS calls: . 52
3.1.9.2 Release due to BSS generated reason . 52
3.1.9.3 Release due to successful handover . 54
3.1.9.4 Release due to uplink release . 54
3.1.10 Paging . 54
3.1.11 Trace Invocation . 54
3.1.12 Flow Control . 55
3.1.12.1 Philosophy . 55
3.1.12.2 Processor Overload at the MSC . 55
3.1.12.3 Processor/CCCH overload at the BSS . 56
3.1.12.4 Message throughput congestion . 56
3.1.13 Classmark Handling Procedures . 56
3.1.13.1 Classmark request procedure . 56
3.1.13.2 Classmark updating procedure . 56
3.1.14 Cipher Mode Control . 56
3.1.14.1 Successful Operation . 56
3.1.14.2 Abnormal Conditions . 57
3.1.15 General SCCP Abnormal Conditions . 57
3.1.16 Initial MS message. 58
3.1.17 Queuing Indication . 58
3.1.17.1 Operation of the procedure in case of assignment procedure . 58
3.1.17.2 Operation of the procedure in case of hand-over resource allocation procedure . 59
3.1.18 Data Link Control SAPI not Equal to "0" . 59
3.1.18.1 Data link set up across the radio interface . 59
3.1.18.1.1 MS to MSC direction . 59
3.1.18.1.2 MSC to MS Direction . 59
3.1.18.2 Choice of the signalling link . 59
3.1.19 BSSMAP Error Handling . 60
3.1.19.1 Definitions of Types of Information Elements . 60
3.1.19.2 Erroneous Events . 61
3.1.19.3 Non-erroneous Events . 61
3.1.19.4 Other Events . 61
3.1.19.5 Appropriate Error Message and Cause Value . 62
3.1.19.6 Unequipped Circuit Identification Code . 62
3.1.19.7 Field Elements . 63
3.1.20 Load Indication Procedure . 63
3.1.20.1 Operation of the procedure . 64
3.1.21 Voice group call service and voice broadcast service call set-up and resource assignment . 64
3.1.21.1 Successful operation. 65
3.1.21.2 VGCS/VBS call set-up abnormal cases . 65
3.1.21.3 VGCS/VBS call set-up failure . 65
ETSI

---------------------- Page: 5 ----------------------
3GPP TS 48.008 version 12.2.0 Release 12 5 ETSI TS 148 008 V12.2.0 (2015-07)
3.1.22 Voice group call service and voice broadcast service Assignment procedure . 65
3.1.22.1 Successful operation. 66
3.1.22.2 VGCS/VBS Assignment abnormal cases . 68
3.1.22.3 VGCS/VBS Assignment failure . 69
3.1.22.4 VGCS/VBS Queuing Indication . 70
3.1.23 (void) . 70
3.1.24 Voice group call uplink control procedure - talker priority not supported by the network . 70
3.1.24.1 Uplink allocation procedure . 70
3.1.24.1.1 Successful uplink allocation operation . 71
3.1.24.1.2 Unsuccessful uplink allocation operation . 71
3.1.24.2 Uplink release procedure . 71
3.1.24.3 Uplink seize procedure . 71
3.1.24a Voice group call uplink control procedure - talker priority supported by the network . 71
3.1.24.a.1 General . 71
3.1.24a.2 Uplink allocation procedure . 72
3.1.24a.2.1 Successful uplink allocation operation . 72
3.1.24a.2.1.1 Normal Priority Request . 72
3.1.24a.2.1.2 Privileged or Emergency Priority Request via Uplink Access procedure . 72
3.1.24a.2.1.3 Privileged or Emergency Priority Request via Priority Uplink Request procedure . 73
3.1.24a.2.2 Unsuccessful uplink allocation operation . 73
3.1.24a.2.2.1 Normal Priority Uplink Request . 73
3.1.24a.2.2.2 Privileged or Emergency Uplink Request via Uplink Access procedure . 73
3.1.24a.2.2.3 Privileged or Emergency Uplink Request via Priority Uplink Request procedure . 74
3.1.24a.3 Uplink release procedure . 74
3.1.24a.4 Uplink seize procedure . 74
3.1.24a.5 Emergency Reset procedure via UPLINK ACCESS message . 74
3.1.24a.5.1 Unsuccessful . 74
3.1.24a.6 Emergency Reset procedure via PRIORITY UPLINK REQUEST message . 74
3.1.24a.6.1 Unsuccessful . 74
3.1.24b Talker Information . 75
3.1.24c SMS to ongoing VGCS call all . 75
3.1.24d Distributing application-specific data to ongoing VGCS call . 75
3.1.25 PDSS1 flow control . 75
3.1.26 Circuit re-selection procedure . 76
3.1.27 LSA handling . 76
3.1.28 Location Acquisition. 76
3.1.28.1 (void) . 77
3.1.28.2 Location request . 77
3.1.28.2.1 Successful Operation . 77
3.1.28.2.2 Unsuccessful Operation . 78
3.1.28.2.3 Abnormal cases . 78
3.1.28.2.4 Overload . 78
3.1.29 Connectionless Information Transfer procedure . 78
3.1.29.1 Unsuccessful Operation . 78
3.1.29.2 Abnormal cases . 78
3.1.29.3 Segmentation . 78
3.1.30 Common ID . 79
3.1.31 VGCS/VBS Cell Re-established - no A-interface link sharing . 79
3.1.32 Rerouting procedure in case of MOCN configuration for network sharing . 79
3.1.32.1 General .
...