SIST-V ETSI/EG 201 738-1 V1.1.1:2003

Network integration testing between ISDN, PLMN and PSTN - Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification

Specifies the TSS&TP for the end-to-end testing of the interworking between the ISDN and GSM services. End-to-end testing   covers all the testing activities necessary to verify the correct behaviour of the interconnected network from the point of view of access interfaces, network side. Both bearer services (and associated teleservices) and supplementary services are checked for interworking capability and compatibility.

Preskušanje integracije omrežja med ISDN, PLMN in PSTN - 1. del: Zgradba preskuševalnega niza in namen preskušanja (TSS&TP) - Specifikacija

General Information

• Status: Published
• Publication Date: 31-Oct-2003
• ICS: 33.040.35 - Telephone networks
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2003
• Due Date: 01-Nov-2003
• Completion Date: 01-Nov-2003
• Ref Project: ETSI EG 201 738-1 V1.1.1 (1999-11) - Network integration testing between ISDN, PLMN and PSTN; Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2003
Preskušanje integracije omrežja med ISDN, PLMN in PSTN - 1. del: Zgradba
preskuševalnega niza in namen preskušanja (TSS&TP) - Specifikacija
Network integration testing between ISDN, PLMN and PSTN - Part 1: Test Suite
Structure and Test Purposes (TSS&TP) specification
Ta slovenski standard je istoveten z: EG 201 738-1 Version 1.1.1
ICS:
33.040.35 Telefonska omrežja Telephone networks
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI EG 201 738-1 V1.1.1 (2000-03)
ETSI Guide
Network integration testing between
ISDN, PLMN and PSTN;
Part 1: Test Suite Structure and Test Purposes (TSS&TP)
specification
2 ETSI EG 201 738-1 V1.1.1 (2000-03)
Reference
DEG/SPAN-05127-1
Keywords
DSS1, ISDN, PLMN, PSTN, TSS&TP
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ETSI
3 ETSI EG 201 738-1 V1.1.1 (2000-03)
Contents
Intellectual Property Rights.5
Foreword .5
Introduction .5
1 Scope.6
2 References.6
3 Definitions.9
3.1 Definitions related to conformance testing.9
3.2 Definitions related to EN 300 403-1 .10
3.3 Configuration of the mobile network.10
3.3.1 The entities of the mobile system.10
3.3.1.1 The Home Location Register (HLR).10
3.3.1.2 The Visitor Location Register (VLR).10
3.3.1.3 The Mobile-services Switching Centre (MSC) .10
3.3.1.4 The Base Station System (BSS) .10
3.3.1.5 The Gateway MSC (GMSC) .11
3.3.1.6 The SMS Gateway MSC .11
3.3.1.7 The SMS Interworking MSC .11
3.3.1.8 The Equipment Identity Register (EIR).11
3.3.2 Configuration of a Public Land Mobile Network (PLMN).11
3.3.3 Interconnection between PLMNs.11
3.3.4 The interfaces within the mobile service.11
3.3.4.1 Interface between the HLR and the VLR (D-interface).11
3.3.4.2 Interface between the VLR and its associated MSC(s) (B-interface).12
3.3.4.3 Interface between VLRs (G-interface) .12
3.3.4.4 Interface between the HLR and the MSC (C-interface) .12
3.3.4.5 Interface between MSCs (E-interface) .12
3.3.4.6 Interface between the MSC and Base Station Systems (A-interface).12
3.3.5 Access reference configuration.13
3.3.5.1 Mobile Termination (MT).13
3.3.5.2 Physical Realization .13
3.4 Definitions related to test purpose descriptions.13
4 Abbreviations .15
5 Test Suite Structure (TSS) .16
5.1 ISDN-PLMN .16
5.2 PSTN-PLMN.18
5.3 PLMN-ISDN .19
5.4 PLMN-PSTN.20
5.5 PLMN-PLMN .21
6 Test Purposes .22
6.1 Introduction .22
6.1.1 Test purpose naming convention .22
6.1.2 Source of test purpose definition .22
6.1.3 Test purpose structure.23
6.2 Test Purposes .24
6.2.1 Test purposes for ISDN-PLMN, Basic call .24
6.2.1.1 Successful.24
6.2.1.2 Unsuccessful .55
6.2.2 Test purposes for ISDN-PLMN Supplementary services .88
6.2.2.1 Bearer capability "speech" .88
6.2.2.2 Bearer capability "UDI".170
6.2.3 Test purposes for ISDN-PLMN, B-channel end-to-end performance.217
6.2.4 Test purposes for PSTN-PLMN, Basic call.218
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4 ETSI EG 201 738-1 V1.1.1 (2000-03)
6.2.4.1 Successful.218
6.2.4.2 Unsuccessful .220
6.2.5 Test purposes for PSTN-PLMN, Supplementary_services.225
6.2.6 Test purposes for PSTN-PLMN, B-channel end-to-end performance .233
6.2.7 Test purposes for PLMN-ISDN, Basic call .236
6.2.7.1 Successful.236
6.2.7.2 Unsuccessful .271
6.2.8 Test purposes for PLMN-ISDN Supplementary services .289
6.2.8.1 Bearer capability "speech" .289
6.2.8.2 Bearer capability "UDI".335
6.2.9 Test purposes for PLMN-ISDN, B-channel end-to-end performance.368
6.2.10 Test purposes for PLMN-PSTN, Basic call.369
6.2.10.1 Successful.369
6.2.10.2 Unsuccessful .381
6.2.11 Test purposes for PLMN-PSTN, Supplementary Services .389
6.2.12 Test purposes for PLMN- PSTN, B-channel end-to-end performance .407
6.2.13 Test purposes for PLMN-PLMN, Basic call.412
6.2.13.1 Successful.412
6.2.13.2 Unsuccessful .461
6.2.14 Test purposes for PLMN-PLMN Supplementary services.482
6.2.14.1 Bearer capability "speech" .482
6.2.14.2 Bearer capability "UDI".526
6.2.15 Test purposes for PLMN-PLMN, B-channel end-to-end performance.562
Bibliography.563
History.565
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5 ETSI EG 201 738-1 V1.1.1 (2000-03)
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 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://www.etsi.org/ipr).
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 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 ETSI Guide (EG) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN) using information provided by EURESCOM P613.
The present document is part 1 of a multi-part EG covering the Network integration testing between ISDN, PLMN and
PSTN, as identified below:
Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification;
Part 2: Abstract Test Suite (ATS), Implementation Conformance Statement (ICS) and partial Implementation
eXtra Information for Testing (IXIT) proformas.
Introduction
The present document contains the Test Suite Structure and Test Purposes (TSS&TP) for Network Integration Testing
Narrow-band Services for testing the European ISDN and PLMN, covering Network Integration Testing (NIT) between
ISDN-PLMN, PSTN-PLMN, PLMN-ISDN, PLMN-PSTN and PLMN-PLMN networks. The objective is to verify the
level of international end-to-end support of ISDN and PLMN services. Both bearer services (and associated
teleservices) and supplementary services are checked for interworking capability and compatibility, in the European
ISDN and PLMN.
The European ISDN and PLMN are made up by connecting the different national networks and End-to-end NIT covers
all the testing activities necessary to assess the correct behaviour of the interconnected network from the point of view of
access interfaces, network side.
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6 ETSI EG 201 738-1 V1.1.1 (2000-03)
1 Scope
The present document specifies the Test Suite Structure and Test Purposes (TSS&TP) for Network Integration Testing
(NIT) to verify the overall compatibility of ISDN, PLMN and non-ISDN (PSTN) over the national or international ISUP
between networks. Network Integration Testing will assure that the appropriate requested features passes between an
ISDN subscriber and the PLMN subscriber across the national or international ISUP (ISUP V2) interface.
2 References
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.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1:
Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[2] EG 201 018 (ETR 018): "Integrated Services Digital Network (ISDN); Application of the Bearer
Capability (BC), High Layer Compatibility (HLC) and Low Layer Compatibility (LLC)
information elements by terminals supporting ISDN services".
[3] ETS 300 267-1: "Integrated Services Digital Network (ISDN); Telephony 7 kHz and
videotelephony teleservices; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[4] ETS 300 080: "Integrated Services Digital Network (ISDN); ISDN lower layer protocols for
telematic terminals".
[5] ETS 300 103: "Integrated Services Digital Network (ISDN); Support of
CCITT Recommendation X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by
an ISDN Synchronous and asynchronous terminal adaptation functions".
[6] ETS 300 092-1: "Integrated Services Digital Network (ISDN); Calling Line Identification
Presentation (CLIP) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[7] ETS 300 093-1: "Integrated Services Digital Network (ISDN); Calling Line Identification
Restriction (CLIR) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[8] ETS 300 097-1: "Integrated Services Digital Network (ISDN); Connected Line Identification
Presentation (COLP) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[9] ETS 300 098-1: "Integrated Services Digital Network (ISDN); Connected Line Identification
Restriction (COLR) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[10] ETS 300 138-1: "Integrated Services Digital Network (ISDN); Closed User Group (CUG)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
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7 ETSI EG 201 738-1 V1.1.1 (2000-03)
[11] ETS 300 061-1: "Integrated Services Digital Network (ISDN); Subaddressing (SUB)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[12] ETS 300 055-1: "Integrated Services Digital Network (ISDN); Terminal Portability (TP)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[13] ETS 300 286-1: "Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[14] ETS 300 185-1: "Integrated Services Digital Network (ISDN); Conference call, add-on (CONF)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[15] ETS 300 207-1: "Integrated Services Digital Network (ISDN); Diversion supplementary services;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[16] ETS 300 130-1: "Integrated Services Digital Network (ISDN); Malicious Call Identification
(MCID) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[17] ETS 300 188-1: "Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary
service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification".
[18] ETS 300 141-1: "Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary
service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification".
[19] ETS 300 058-1: "Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary
service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification".
[20] ETS 300 369-1: "Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[21] ETS 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[22] TBR 008: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice;
Attachment requirements for handset terminals".
[23] ITU-T Recommendation I.112 (1988): "Vocabulary and terms for ISDNs".
[24] ITU-T Recommendation I.210 (1988): "Principles of the telecommunication services supported by
an ISDN and the means to describe them".
[25] ITU-T Recommendation E.164 (1988): "Numbering plan for the ISDN era".
[26] ISO/IEC 9646-1: "Information Technology-OSI Conformance Testing Methodology and
Framework, Part 1: General Concepts".
[27] ETS 300 502: "European digital cellular telecommunications system (Phase 2); Teleservices
supported by a GSM Public Land Mobile Network (PLMN) (GSM 02.03)".
[28] ETS 300 511: "European digital cellular telecommunications system (Phase 2); Man-Machine
Interface (MMI) of the Mobile Station (MS)
[29] ETS 300 515: "Digital cellular telecommunications system (Phase 2); Call Forwarding (CF)
supplementary services; Stage 1 (GSM 02.82)".
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8 ETSI EG 201 738-1 V1.1.1 (2000-03)
[30] ETS 300 518: "Digital cellular telecommunications system (Phase 2); Closed User Group (CUG)
supplementary services; Stage 1 (GSM 02.85)".
[31] ETS 300 543: "Digital cellular telecommunications system (Phase 2); Call Forwarding (CF)
supplementary services; Stage 2 (GSM 03.82)".
[32] ETS 300 544: "European digital cellular telecommunications system (Phase 2); Call Waiting (CW)
and Call Hold (HOLD) supplementary services; Stage 2 (GSM 03.83)".
[33] ETS 300 546: "Digital cellular telecommunications system (Phase 2); Closed User Group (CUG)
supplementary services; Stage 2 (GSM 03.85)".
[34] ETS 300 548: "European digital cellular telecommunications system (Phase 2); Call Barring (CB)
supplementary services; Stage 2 (GSM 03.88)".
[35] ETS 300 557: "Digital cellular telecommunications system (Phase 2); Mobile radio interface;
Layer 3 specification (GSM 04.08 version 4.23.1)".
[36] ETS 300 565: "European digital cellular telecommunications system (Phase 2); Line identification
supplementary services; Stage 3 (GSM 04.81)".
[37] ETS 300 566: "Digital cellular telecommunications system (Phase 2); Call Forwarding (CF)
supplementary services; Stage 3 (GSM 04.82)".
[38] ETS 300 567: "Digital cellular telecommunications system (Phase 2); Call Waiting (CW) and Call
Hold (HOLD) supplementary services; Stage 3 (GSM 04.83)".
[39] ETS 300 569: "Digital cellular telecommunications system (Phase 2); Closed User Group (CUG)
supplementary services; Stage 3 (GSM 04.85)".
[40] ETS 300 582: "Digital cellular telecommunications system (Phase 2); General on Terminal
Adaptation Functions (TAF) for Mobile Stations (MS) (GSM 07.01)".
[41] ETS 300 599: "Digital cellular telecommunications system (Phase 2); Mobile Application Part
(MAP) specification (GSM 09.02 version 4.17.1)".
[42] ETS 300 604: "Digital cellular telecommunications system (Phase 2); General requirements on
interworking between the Public Land Mobile Network (PLMN) and the Integrated Services
Digital Network (ISDN) or Public Switched Telephone Network (PSTN) (GSM 09.07 version
4.13.1)".
[43] ITU-T Recommendation Q.764 (1993): "Specifications of Signalling System No.7; Signalling
procedures".
[44] ETS 300 587-2: "European digital cellular telecommunications system (Phase 2); Base Station
System - Mobile-services Switching Centre (BSS - MSC) interface; Interface principles (GSM
08.02)".
[45] ETS 300 524: "European digital cellular telecommunications system (Phase 2); Signalling
requirements relating to routeing of calls to mobile subscribers (GSM 03.04)".
[46] ETS 300 102-1: "Integrated Services Digital Network (ISDN); User-network interface layer 3;
Specifications for basic call control".
[47] ITU-T Recommendation V.110 (1996): "Support by an ISDN of data terminal equipments with
V-Series type interfaces".
[48] ITU-T Recommendation G.711 (1988): "Pulse code modulation (PCM) of voice frequencies".
[49] ITU-T Recommendation X.30 (1993): "Support of X.21, X.21 bis and X.20 bis based Data
Terminal Equipments (DTEs) by an Integrated Services Digital Network (ISDN)".
[50] ITU-T Recommendation F.721 (1992): "Videotelephony teleservice for ISDN".
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9 ETSI EG 201 738-1 V1.1.1 (2000-03)
[51] ITU-T Recommendation F.182 (1996): "Guidelines for the support of the communication of
documents using Group 3 facsimile between user terminals via public networks".
[52] ISO/IEC 8208 (1995): "Information technology - Data communications - X.25 Packet Layer
Protocol for Data Terminal Equipment".
[53] ISO/IEC 7776 (1995): "Information technology - Telecommunications and information exchange
between systems - High-level data link control procedures - Description of the X.25
LAPB-compatible DTE data link procedures".
[54] ITU-T Recommendation V.120 (1996): "Support by an ISDN of data terminal equipment with
V-Series type interfaces with provision for statistical multiplexing".
[55] ETS 300 578: "Digital cellular telecommunications system (Phase 2); Radio subsystem link control
(GSM 05.08 version 4.22.0)".
[56] ITU-T Recommendation G.101 (1996): "The transmission plan".
[57] ETS 300 542: "Digital cellular telecommunications system (Phase 2); Line identification
supplementary services; Stage 2 (GSM 03.81 version 4.8.1)".
[58] ITU-T Recommendation H.221 (1999): "Frame structure for a 64 to 1920 kbit/s channel in
audiovisual teleservices".
[59] ITU-T Recommendation H.242 (1999): "System for establishing communication between
audiovisual terminals using digital channels up to 2 Mbit/s".
3 Definitions
For the purposes of the present document, the following terms and definitions apply:
3.1 Definitions related to conformance testing
abstract test case: refer to ISO/IEC 9646-1 [26]
abstract test suite: refer to ISO/IEC 9646-1 [26]
implementation under test: refer to ISO/IEC 9646-1 [26]
lower tester: refer to ISO/IEC 9646-1 [26]
Implementation Conformance Statement (ICS) proforma: refer to ISO/IEC 9646-1 [26]
Implementation eXtra Information for Testing (IXIT) proforma: refer to ISO/IEC 9646-1 [26]
point of control and observation: refer to ISO/IEC 9646-1 [26]
protocol implementation conformance statement: refer to ISO/IEC 9646-1 [26]
protocol implementation extra information for testing: refer to ISO/IEC 9646-1 [26]
system under test: refer to ISO/IEC 9646-1 [26]
test purpose: refer to ISO/IEC 9646-1 [26]
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10 ETSI EG 201 738-1 V1.1.1 (2000-03)
3.2 Definitions related to EN 300 403-1
user: DSS1 protocol entity at the User side of the user-network interface where a T reference point or coincident S and
T reference point applies
user (S/T): DSS1 protocol entity at the User side of the user-network interface where a coincident S and T reference
point applies
user (T): DSS1 protocol entity at the User side of the user-network interface where a T reference point applies (User is
the Private ISDN)
Integrated Services Digital Network (ISDN): see ITU-T Recommendation I.112 [23], subclause 2.2 definition 308
service: telecommunications service: see ITU-T Recommendation I.112 [23], subclause 2.2 definition 201
supplementary service: see ITU-T Recommendation I.210 [24], subclause 2.4
ISDN number: number conforming to the numbering and structure specified in ITU-T Recommendation E.164 [25]
3.3 Configuration of the mobile network
3.3.1 The entities of the mobile system
To provide the mobile service as it is defined, it is necessary to introduce some specific functions. These functional
entities can be implemented in different equipment's or integrated. In any case, exchanges of data occur between these
entities.
3.3.1.1 The Home Location Register (HLR)
This functional entity is a data base in charge of the management of mobile subscribers. A PLMN may contain one or
several HLRs; it depends on the number of mobile subscribers, on the capacity of the equipment and on the organization
of the network. All subscription data are stored there. The main information stored there concerns the location of each
mobile station in order to be able to route calls to the mobile subscribers managed by each HLR. All management
interventions occur on this data base. The HLRs have no direct control of MSCs.
3.3.1.2 The Visitor Location Register (VLR)
An MS roaming in an MSC area is controlled by the Visitor Location Register in charge of this area. When an MS
appears in a location area it starts a location updating procedure. The MSC in charge of that area notices this registration
and transfers to the Visitor Location Register the identity of the location area where the MS is situated. A VLR may be
in charge of one or several MSC areas.
The VLR also contains the information needed to handle the calls set up or received by the MSs registered in its data
base (in some cases the VLR may have to obtain additional information from the HLR).
3.3.1.3 The Mobile-services Switching Centre (MSC)
The Mobile-services Switching Centre is an exchange which performs all the switching functions for mobile stations
located in a geographical area designated as the MSC area. The main difference between an MSC and an exchange in a
fixed network is that the MSC has to take into account the impact of the allocation of radio resources and the mobile
nature of the subscribers and has to perform, for example, the following procedures:
- procedures required for the location registration;
- procedures required for hand-over.
3.3.1.4 The Base Station System (BSS)
The BSS is the sub-system of Base Station equipment (transceivers, controllers, etc.) which is viewed by the MSC
through a single interface (A-interface) with the functionality described in ETS 300 587-2 [44] (GSM 08.02).
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11 ETSI EG 201 738-1 V1.1.1 (2000-03)
3.3.1.5 The Gateway MSC (GMSC)
In the case of incoming calls to the PLMN, if the fixed network is unable to interrogate the HLR, the call is routed to an
MSC. This MSC will interrogate the appropriate HLR and then route the call to the MSC where the mobile station is
located. The MSC which then performs the routing function to the actual location of the mobile is called the Gateway
MSC. The choice of which MSCs can act as Gateway MSCs is a network operator matter (e.g. all MSCs or some
designated MSCs).
3.3.1.6 The SMS Gateway MSC
The SMS GMSC is the interface between the Mobile Network and the network which provides access to the Short
Message Service Centre, for short messages to be delivered to mobile stations. The choice of which MSCs can act as
SMS Gateway MSCs is a network operator matter (e.g. all MSCs or some designated MSCs).
3.3.1.7 The SMS Interworking MSC
The SMS IWMSC is the interface between the Mobile Network and the network which provides access to the Short
Message Service Centre, for short messages submitted by mobile stations. The choice of which MSCs can act as SMS
Interworking MSCs is a network operator matter (e.g. all MSCs or some designated MSCs).
3.3.1.8 The Equipment Identity Register (EIR)
This functional unit is a data base in charge of the management of the equipment identities of the mobile stations; see
also GSM 02.16.
3.3.2 Configuration of a Public Land Mobile Network (PLMN)
The basic configuration of a Public Land Mobile Network is presented in figure 2.2/1. In this figure the most general
solution is described in order to define all the possible interfaces which can be found in any PLMN. The specific
implementation in each network may be different: some particular functions may be implemented in the same equipment
and then some interfaces may become internal interfaces. In any case the configuration of a PLMN has no impact on the
relationship with the other PLMNs. In this configuration, all the functions are considered implemented in different
equipment's. Therefore, all the interfaces are external and need the support of the Mobile Application Part of the
Signalling System No. 7 to exchange the data necessary to support the mobile service. From this configuration, all the
possible PLMN organizations can be deduced.
3.3.3 Interconnection between PLMNs
Since the configuration of a PLMN does not have any impact on other PLMNs, the signalling interfaces specified can be
implemented both between the entities within a PLMN and between different PLMNs.
3.3.4 The interfaces within the mobile service
3.3.4.1 Interface between the HLR and the VLR (D-interface)
This interface is used to exchange the data related to the location of the mobile station and to the management of the
subscriber. The main service provided to the mobile subscriber is the capability to set up or to receive calls within the
whole service area. To support that purpose the location registers have to exchange data. The VLR informs the HLR on
the registration of a mobile station managed by the latter and provides it with the relevant location information. The
HLR sends to the VLR all the data needed to support the service to the mobile station. The HLR then calls the previous
VLR to inform it that it can cancel the location registration of this station because of the roaming of the mobile.
Exchanges of data may also occur when the mobile subscriber requires a particular service, when he wants to change
some data attached to his subscription or when some parameters of the subscription are modified by administrative
means.
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12 ETSI EG 201 738-1 V1.1.1 (2000-03)
3.3.4.2 Interface between the VLR and its associated MSC(s) (B-interface)
The VLR is the location and management data base for the mobile stations roaming in the area controlled by the
associated MSC(s). Whenever the MSC needs data related to a given mobile station currently located in its area, it
interrogates the VLR. When a mobile station initiates a location updating procedure with an MSC, the MSC informs its
VLR which stores the relevant information in its tables. This procedure occurs whenever a mobile roams to another
location area. Also, for instance when a subscriber activates a specific supplementary service or modifies some data
attached to a service, the MSC transfers (via the VLR) the request to the HLR, which stores these modifications and
updates the VLR if required.
However, this interface is not fully operational specified. It is strongly recommended not to implement the B-interface as
an external interface.
3.3.4.3 Interface between VLRs (G-interface)
When an MS initiates a location updating using TMSI, the VLR can fetch the IMSI and authentication set from the
previous VLR.
3.3.4.4 Interface between the HLR and the MSC (C-interface)
When the fixed network is not able to perform the interrogation procedure needed to set up a call to a mobile subscriber,
the Gateway MSC has to interrogate the HLR of the called subscriber to obtain the roaming number of the called MS
(see ETS 300 524 [45] (GSM 03.04)).
To forward a short message to a mobile subscriber, the SMS Gateway MSC has to interrogate the HLR to obtain the
MSC number where the MS is located.
3.3.4.5 Interface between MSCs (E-interface)
When a mobile station moves from one MSC area to another during a call, a handover procedure has to be performed in
order to continue the communication. For that purpose the MSCs involved have to exchange data to initiate and then to
realize the operation.
This interface is also used to forward short messages.
3.3.4.6 Interface between the MSC and Base Station Systems (A-interface)
The description of this interface is contained in the GSM 08-series of Mobile stations.
The BSS-MSC interface carries information concerning:
- BSS management;
- call handling;
- location management.
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13 ETSI EG 201 738-1 V1.1.1 (2000-03)
3.3.5 Access reference configuration
3.3.5.1 Mobile Termination (MT)
Mobile Termination (MT) performs the following functions:
- radio transmission termination;
- radio transmission channel management;
- terminal capabilities, including presentation of a man-machine interface to a user;
- speech encoding/decoding;
- error protection for all information sent across the radio path. This includes FEC (forward error correction) and,
for signalling and user data (except for transparent data services), ARQ (automatic request fore transmission);
- flow control of signalling and mapping of user signalling to/from PLMN access signalling;
- flow control of user data (except for transparent data services) and mapping of flow control for asynchronous
transparent data services;
- rate adaptation of user data between the radio channel rate and user rates;
- multiple terminal support;
- mobility management.
There are three types of MT:
- MT0 includes functions belonging to the functional group MT, with support of no terminal interfaces;
- MT1 includes functions belonging to the functional group MT, and with an interface that complies with the GSM
recommended subset of the ISDN user-network interface specifications;
- MT2 includes functions belonging to the functional group MT, and with an interface that complies with the GSM
recommended subset of the ITU-T X or V series interface recommendations.
The MT plus any TE/(TE + TA) constitutes the Mobile Station, MS.
3.3.5.2 Physical Realization
In a GSM PLMN, the reference point Um is a GSM interface point, i.e. it is always implemented as a physical interface
The reference points S and R may be optionally implemented as physical interfaces.
3.4 Definitions related to test purpose descriptions
BC=speech: Bearer capability information element with its information transfer capability field set to "speech" and its
user information layer one protocol field set to "ITU-T Recommendation G.711 [48] A-law"
BC=3,1 kHz audio: Bearer capability information element with its information transfer capability field set to "3,1 kHz
Audio" and its user information layer one protocol field set to "ITU-T Recommendation G.711 [48] A-law"
BC=UDI: Bearer capability information element with its information transfer capability set to "unrestricted digital
information" [1]
BC=UDI/TA: Bearer capability information element with its information transfer capability set to "unrestricted digital
information with tones/announcements" and its user information layer one protocol field set to "ITU-T
Recommendations H.221 [58] and H.242 [59]"
BC= V110/X30: Bearer capability information element with its information transfer capability set to "unrestricted
digital information" and its user information layer 1 field set to "ITU-T standardized rate adaption V.110/X.30",
including sync/async and user rate values [1]
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14 ETSI EG 201 738-1 V1.1.1 (2000-03)
HLC=telephony: High Layer compatibility information element with its high layer characteristics identification field
set to "telephony".
HLC=videotelephony_ic: High Layer compatibility information element with its high layer characteristics
identification field set to "videotelephony (Rec. F.721 [50] )" and its extended audiovisual characteristics field set to
"capability set of initial channel of ITU-T Recommendation H.221 [58]"
HLC = Facsimile G2/G3: High Layer compatibility information element with its high layer characteristics
identification field set to "facsimile group 2/3 (ITU-T Recommendation F.182 [51])"
HLC=facsimile group 4: High Layer compatibility information element with its high layer characteristics identification
field set to "facsimile group 4 class 1" [1], [4]
HLC=telex: High Layer compatibility information element with its high layer characteristics identification field set to
"telex" [1]
LLC=telematic_term: Low Layer compatibility information element with its user information layer 2 field indicating
"ISO/IEC 7776 [53] / DTE-DTE operation" and user information layer 3 field indicating "ISO/IEC 8208 [52]"
LLC=voice band data via modem: Low Layer compatibility information element with its user information layer 1 field
indicating a "modem type" coding [1]
LLC = V110/X30: Low Layer compatibility information element with its user information layer 1 field indicating
"ITU-T standardized rate adaption V.110/X.30" and including sync/async and user rate values [5]
SI=UPVP: Screening Indicator forwarded to the served user coded as "User-provided, verified and passed"
SI=NP: Screening Indicator coded as "Network provided" [1]
PI=PR: Presentation Indicator coded as "Presentation restricted" [1]
TON=international: Type of number coded as "international" [1]
TON=unknown: Type of number coded as "unknown" [1]
NPI=unknown: Numbering plan identification coded as "unknown" [1]
CUG default request: calling user do not include in the outgoing SETUP message a explicit request for the CUG
supplementary service [10]
UI length=32: length of the User information field of the User-user information element is 35 octets
CF active: call forwarding (U, B or NR) supplementary service is already activated with the address of user C [15]
GSM - Bearer service categories: all bearer service categories provide information transfer between R/S reference
points and allow the use of sub-rate information streams which are rate adapted
GSM-BC=UDI: Unrestricted Digital Information (UDI); Provides the transfer of unrestricted digital information
GSM-BC=3,1 kHz(Externalto thePLMN): used to select a "3,1 kHz audio" interworking function at the MSC. This
service category is used when interworking with the ISDN or PSTN "3,1 kHz audio" service and includes the capability
to select a modem at the interworking function. "External to the PLMN" indicates that the "3,1 kHz audio" service is
only used outside of the PLMN, in the ISDN/PSTN. The connection within the PLMN, user access point to the
interworking function, is an unrestricted digital connection
Alternate Speech/Data: provides the capability to swap between speech and data during a call
If either the speech or data portion of the call requires a full rate channel, a full rate channel shall be used for the
duration of the call
The access interface at the mobile station for the data portion is assumed to be a standard data interface. Some means
shall be provided to select the speech/data capability
ETSI
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