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TS 48.008RAN6
BSS-MSC Interface –
Layer 3 specification

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V15.0.0 (PDF)  2018/06  240 p.
V14.2.0  2017/09  247 p.
V13.3.0  2016/09  238 p.
V12.2.0  2015/06  232 p.
V11.9.0  2014/12  230 p.
V10.10.0  2014/12  226 p.
V9.8.0  2012/03  211 p.
V8.10.0  2011/12  210 p.
V7.14.1  2011/04  187 p.
V6.11.0  2005/09  156 p.
V5.12.0  2004/05  154 p.
V4.10.0  2003/09  140 p.
GSM Rel-99 v8.15.0  2003/09  140 p.
GSM Rel-98 v7.7.0  2000/10  134 p.
GSM Rel-97 v6.5.0  2000/04  124 p.
GSM Rel-96 v5.12.0  2000/04  129 p.
GSM Phase-2 v4.12.1  1998/10  103 p.
GSM Phase-1 v3.10.1  1992/02  94 p.

Rapporteur:  Mr. Andersen, Niels Peter Skov

This TS specifies the layer 3 procedures used on the Base Station System (BSS) to Mobile-services Switching Centre (MSC) interface for control of GSM services.
For the purposes of call control and mobility management, messages are not interpreted at the Base Station System (BSS) which acts as a relay function. These messages and procedures are documented in TS 24.008, the only relevant issues covering these messages in the present document are those concerned with error conditions at the interface, and the headers that are required for the correct addressing of the messages. This is specified in more detail in TS 48.002.
The functional split between MSC and BSS is defined in TS 48.002 and states that the BSS is responsible for local radio resource allocation and in order to support this the required procedures between BSS and MSC are defined in detail in the present document.
TS 48.002 also states that the BSS is responsible for the scheduling of all CCCH/BCCH messages and therefore some procedures for providing the BSS with the necessary information to be passed on these channels for individual calls (i.e. paging) are defined in the present document, but the scheduling is not discussed.
This interface and consequently these layer 3 procedures are designed to support BSSs providing one or more cells.

short Table of Contents for  TS 48.008  Word version:   15.0.0

each title links to the equivalent title in the full ToC
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1  ScopeWord-p. 12
2  Application to interface structuresWord-p. 15
3  The BSS Management Application PartWord-p. 17
3.1  BSSMAP ProceduresWord-p. 17
3.1.1  AssignmentUpWord-p. 17
3.1.2  Blocking and UnblockingWord-p. 22
3.1.3  Resource IndicationWord-p. 25
3.1.4  ResetWord-p. 27
3.1.5  External HandoverWord-p. 30
3.1.5a  Handover from GSM to another SystemWord-p. 42
3.1.5b  Handover from another system to GSM [R5]Word-p. 46
3.1.5c  BSS Internal Handover with MSC support [R8]Word-p. 47
3.1.6  Internal Intra-Cell Handover ProcedureWord-p. 50
3.1.7  Internal Inter-Cell Handover ProcedureWord-p. 51
3.1.8  Handover Candidate EnquiryWord-p. 51
3.1.9  Release of Radio Resource And Terrestrial ResourceWord-p. 52
3.1.10  PagingWord-p. 55
3.1.11  Trace InvocationWord-p. 55
3.1.12  Flow ControlWord-p. 56
3.1.13  Classmark Handling ProceduresWord-p. 57
3.1.14  Cipher Mode ControlWord-p. 57
3.1.15  General SCCP Abnormal ConditionsWord-p. 58
3.1.16  Initial MS messageWord-p. 59
3.1.17  Queuing IndicationUpWord-p. 59
3.1.18  Data Link Control SAPI not Equal to "0"Word-p. 60
3.1.19  BSSMAP Error HandlingWord-p. 61
3.1.20  Load Indication ProcedureWord-p. 64
3.1.21  Voice group call service and voice broadcast service call set-up and resource assignmentWord-p. 65
3.1.22  Voice group call service and voice broadcast service Assignment procedureWord-p. 66
3.1.23Void
3.1.24  Voice group call uplink control procedure - talker priority not supported by the networkWord-p. 71
3.1.24a  Voice group call uplink control procedure - talker priority supported by the network [R7]Word-p. 72
3.1.24b  Talker Information [R7]UpWord-p. 75
3.1.24c  SMS to ongoing VGCS call all [R7]Word-p. 76
3.1.24d  Distributing application-specific data to ongoing VGCS call [R8]Word-p. 76
3.1.25  PDSS1 flow controlWord-p. 76
3.1.26  Circuit re-selection procedureWord-p. 76
3.1.27  LSA handlingWord-p. 77
3.1.28  Location AcquisitionWord-p. 77
3.1.29  Connectionless Information Transfer procedureWord-p. 79
3.1.30  Common IDWord-p. 80
3.1.31  VGCS/VBS Cell Re-established - no A-interface link sharing [R7]Word-p. 80
3.1.32  Rerouting procedure in case of MOCN configuration for network sharing [R10]Word-p. 80
3.1.32a  Rerouting procedure in case of GWCN configuration for network sharing [R13]Word-p. 82
3.1.33  Local Call Local Switch [R10]Word-p. 84
3.1.34  MS Registration Enquiry [R13]UpWord-p. 87
3.2  Message Formats and CodingWord-p. 88
3.2.1  Message ContentsWord-p. 91
3.2.2  Signalling element codingWord-p. 132
3.2.3  Signalling Field Element CodingUpWord-p. 216
3.2.4  List of Timers in the BSSMAP ProceduresWord-p. 225
3.3  SDL Representation Of The Procedures At The BSSUpWord-p. 225
4  Broadcast Information Control ChannelWord-p. 225
5  DefinitionsWord-p. 225
6  List of diagramsWord-p. 227
A  Change HistoryWord-p. 238

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