Content for TS 23.018 Word version: 18.0.0
1 Scope p. 8
The present document specifies the technical realization of the handling of calls originated by a UMTS or GSM mobile subscriber and calls directed to a UMTS or GSM mobile subscriber, up to the point where the call is established. Normal release of the call after establishment is also specified. Trunk Originated call is also modelled.
In the present document, the term MS is used to denote a UMTS UE or GSM MS, as appropriate.
The handling of DTMF signalling and Off-Air Call set-up (OACSU) are not described in the present document.
The details of the effects of UMTS or GSM supplementary services on the handling of a call are described in the relevant 3GPP TS 23.07x, 3GPP TS 23.08x and 3GPP TS 23.09x series of specifications.
The specification of the handling of a request from the HLR for subscriber information is not part of basic call handling, but is required for both CAMEL (TS 23.078) and optimal routeing (TS 23.079). The use of the Provide Subscriber Information message flow is shown in TS 23.078 and TS 23.079.
The logical separation of the MSC and VLR (shown in clause 4, clause 5 and clause 7), and the messages transferred between them (described in clause 8) are the basis of a model used to define the externally visible behaviour of the MSC/VLR, which is a single physical entity. They do not impose any requirement except the definition of the externally visible behaviour.
If there is any conflict between the present document and the corresponding stage 3 specifications (TS 24.008, TS 25.413, TS 48.008 and TS 29.002), the stage 3 specification shall prevail.
2 References p. 8
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 43.020: "Security related Network Functions".
[2]
TS 48.008: "Mobile Switching Centre - Base Station System (MSC - BSS) interface Layer 3 specification".
[3]
TS 52.008: "Telecommunication management; GSM subscriber and equipment trace".
[4]
TR 21.905: "Vocabulary for 3GPP Specifications".
[5]
TS 23.003: "Numbering, addressing and identification".
[6]
TS 23.012: "Location management procedures".
[7]
TS 23.032: "Universal Geographical Area Description (GAD)".
[8] Void
[9]
TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".
[10]
TS 23.066: "Support of GSM Mobile Number Portability (MNP); Stage 2".
[11]
TS 23.072: "Call deflection Supplementary Service; Stage2".
[12]
TS 23.078: "Customized Applications for Mobile network Enhanced Logic (CAMEL); Stage 2".
[13]
TS 23.079: "Support of Optimal Routeing (SOR); Technical realization; Stage 2".
[14]
TS 23.081: "Line identification Supplementary Services; Stage 2 ".
[15]
TS 23.082: "Call Forwarding (CF) Supplementary Services; Stage 2".
[16]
TS 23.083: "Call Waiting (CW) and Call Hold (HOLD) Supplementary Service; Stage 2".
[17]
TS 23.084: "Multi Party (MPTY) Supplementary Service; Stage 2".
[18]
TS 23.085: "Closed User Group (CUG) Supplementary Service; Stage 2".
[19]
TS 23.086: "Advice of Charge (AoC) Supplementary Service; Stage 2".
[20]
TS 23.087: "User-to-User Signalling (UUS) Supplementary Service; Stage 2".
[21]
TS 23.088: "Call Barring (CB) Supplementary Service; Stage 2".
[22]
TS 23.091: "Explicit Call Transfer (ECT) supplementary service; Stage 2".
[23]
TS 23.093: "Technical realization of Completion of Calls to Busy Subscriber (CCBS); Stage 2".
[24]
TS 23.116: "Super-charger technical realization; Stage 2".
[25]
TS 23.135: "Multicall supplementary service; Stage 2".
[25a]
TS 23.195: "Provision of UE Specific Behaviour Information to Network Entities".
[26]
TS 24.008: "Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".
[27]
TS 25.413: "UTRAN Iu interface RANAP signalling".
[28]
TS 27.001: "General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)".
[29]
TS 29.002: "Mobile Application Part (MAP) specification".
[30]
TS 29.007: "General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)".
[31]
TS 29.010: "Information Element Mapping between Mobile Station - Base Station System (MS - BSS) and Base Station System - Mobile-services Switching Centre (BSS - MSC) Signalling Procedures and the Mobile Application Part (MAP)".
[32]
TS 33.102: "3G Security; Security architecture ".
[33]
ITU-T Recommendation Q.761 (1999): " Signalling System No. 7 - ISDN User Part functional description ".
[34]
ITU-T Recommendation Q.762 (1999): "Signalling System No. 7 - ISDN User Part general functions of messages and signals".
[35]
ITU-T Recommendation Q.763 (1999): "Signalling System No. 7 - ISDN User Part formats and codes".
[36]
ITU-T Recommendation Q.764 (1999): " Signalling System No. 7 - ISDN user part signalling procedures".
[37]
ITU-T Recommendation Q.850 (05/1998) including Amendment 1 (07/2001): "Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN User Part".
[38]
TS 23.172: "Technical realization of Circuit Switched (CS) multimedia service ; UDI/RDI fallback and service modification; Stage 2".
[39]
TS 23.067: "enhanced Multi-Level Precedence and Pre-emption service (eMLPP) - Stage 2".
[40]
TS 23.221: "Technical specification Group Services and System Aspects; Architectural Requirements".
[41]
TS 29.118: "Mobility Management Entity (MME) - Visitor Location Register (VLR) SGs interface specification".
[42]
TS 23.272: "Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2".
[43]
TS 23.007: "Restoration procedures".
3 Definitions and abbreviations p. 10
3.1 Definitions p. 10
For the purposes of the present document, the following terms and definitions apply:
A subscriber:
the calling mobile subscriber
B subscriber:
the mobile subscriber originally called by the A subscriber
C subscriber:
the subscriber to whom the B subscriber has requested that calls be forwarded. The C subscriber may be fixed or mobile.
Location Information:
information to define the whereabouts of the MS, and the age of the information defining the whereabouts
PLMN Bearer Capability:
information transferred over the UMTS or GSM access interface to define the information transfer capabilities to be used between the MS and the network for a circuit-switched connection
3.2 Abbreviations p. 10
For the purposes of the present document, the following abbreviations apply:
A&O
Active & Operative
ACM
Address Complete Message
ANM
ANswer Message
AoC
Advice of Charge
BC
Bearer Capability
BOIC-exHC&BOIZC
Barring of Outgoing International Calls except those directed to the HPLMN Country & Barring of Outgoing InterZonal Calls
BOIZC
Barring of Outgoing InterZonal Calls
BOIZC-exHC
Barring of Outgoing InterZonal Calls except those directed to the HPLMN Country
CCBS
Completion of Calls to Busy Subscriber
CFB
Call Forwarding on Busy
CFNRc
Call Forwarding on mobile subscriber Not Reachable
CFNRy
Call Forwarding on No Reply
CFU
Call Forwarding Unconditional
CLIP
Calling Line Identity Presentation
CLIR
Calling Line Identity Restriction
COLP
COnnected Line identity Presentation
COLR
COnnected Line identity Restriction
CSG
Closed Subscriber Group
CUG
Closed User Group
CW
Call Waiting
FTN
Forwarded-To Number
FTNW
Forwarded-To NetWork
GMSCB
Gateway MSC of the B subscriber
GPRS
General Packet Radio Service
HLC
Higher Layer Compatibility
HLRB
The HLR of the B subscriber
HPLMNB
The HPLMN of the B subscriber
IAM
Initial Address Message
IPLMN
Interrogating PLMN - the PLMN containing GMSCB
IWU
Inter Working Unit
LLC
Lower Layer Compatibility
MO
Mobile Originated
MPTY
MultiParTY
MT
Mobile Terminated
NDUB
Network Determined User Busy
NRCT
No Reply Call Timer
PgA
Paging Area
PLMN BC
(GSM or UMTS) PLMN Bearer Capability
PRN
Provide Roaming Number
PUESBINE
Provision of User Equipment Specific Behaviour Information to Network Entities
SCUDIF
Service Change and UDI/RDI Fallback
SGSN
Serving GPRS support node
SIFIC
Send Information For Incoming Call
SIFOC
Send Information For Outgoing Call
SRI
Send Routeing Information
TO
Trunk Originated
UDUB
User Determined User Busy
UESBI-Iu
User Equipment Specific Behaviour Information over the Iu interface
VLRA
The VLR of the A subscriber
VLRB
The VLR of the B subscriber
VMSCA
The Visited MSC of the A subscriber
VMSCB
The Visited MSC of the B subscriber
VPLMNA
The Visited PLMN of the A subscriber
VPLMNB
The Visited PLMN of the B subscriber
