ETSI ETR 341 ed.1 (1996-12)

Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile overview

DTR/RES-03058

Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Globalni sistem mobilnih komunikacij (GSM) - Profil medsebojnega delovanja pri DECT/GSM (IWP) - Pregled profila

General Information

• Status: Published
• Publication Date: 22-Dec-1996
• Technical Committee: RES 3 - DECT
• Current Stage: 12 - Completion
• Due Date: 13-Dec-1996
• Completion Date: 23-Dec-1996
• Ref Project: PSIST ETR 341:1998 - Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile overview

Standards Content (Sample)

SLOVENSKI STANDARD
PSIST ETR 341:1998
01-avgust-1998
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH'(&7*OREDOQLVLVWHP
PRELOQLKNRPXQLNDFLM*603URILOPHGVHERMQHJDGHORYDQMDSUL'(&7*60,:3
3UHJOHGSURILOD
Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile
communications (GSM); DECT/GSM Interworking Profile (IWP); Profile overview
Ta slovenski standard je istoveten z: ETR 341 Edition 1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
PSIST ETR 341:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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PSIST ETR 341:1998

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PSIST ETR 341:1998
ETSI ETR 341
TECHNICAL December 1996
REPORT
Source: ETSI DECT Reference: DTR/RES-03058
ICS: 33.020
Key words: DECT, GSM, DSS1, ISDN
Radio Equipment and Systems (RES);
Digital Enhanced Cordless Telecommunications/
Global System for Mobile communications (DECT/GSM)
interworking profile;
Profile overview
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.

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ETR 341: December 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETR 341: December 1996
Contents
Foreword .5
1 Scope .7
2 References.7
3 Abbreviations and Definitions.10
3.1 Abbreviations .10
3.2 Definitions .11
4 Introduction.11
5 DECT/GSM Interworking profiles - A-interface .13
5.1 Summary.13
5.2 GSM MSC to DECT FP interconnection ETS 300 499.13
5.3 Access and mapping standards.14
5.3.1 Access and mapping for 3,1 kHz speech service, ETS 300 370 .15
5.3.2 GSM Phase 2 supplementary services implementation, ETS 300 703.15
5.3.3 Implementation of bearer services, ETS 300 756.15
5.3.4 Implementation of facsimile group 3, ETS 300 792 .15
5.3.5 Implementation of short message services, point to point and cell
broadcast services, ETS 300 764 .16
6 Test specifications.16
7 TBR for DECT terminal equipment access to GSM PLMNs.16
Annex A: DECT access to GSM via ISDN.17
A.1 Introduction.17
A.2 DECT access to GSM via ISDN stage 1 .18
A.3 DECT access to GSM via ISDN stage 2 .18
A.4 DECT access to GSM via ISDN - future work.19
Annex B: Dual mode terminals.20
Annex C: Future work on A-interface interworking .21
Annex D: Scenarios .22
D.1 DECT/GSM dual mode terminal without network interconnection .22
D.2 DECT enhancement to GSM PLMNs.23
D.3 Cordless PBX with inter-PBX roaming .24
D.4 DECT public pedestrian service with wide area roaming.25
D.5 Mobility between public & private networks.26
History.27

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ETR 341: December 1996
Foreword
This ETSI Technical Report (ETR) has been produced by the Digital Enhanced Cordless
Telecommunications (DECT) Project of the European Telecommunications Standards Institute (ETSI).
ETRs are informative documents resulting from ETSI studies which are not appropriate for European
Telecommunication Standard (ETS) or Interim European Telecommunication Standard (I-ETS) status. An
ETR may be used to publish material which is either of an informative nature, relating to the use or the
application of ETSs or I-ETSs, or which is immature and not yet suitable for formal adoption as an ETS or
an I-ETS.

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1 Scope
The purpose of this ETSI Technical Report (ETR) is to give an overview of the Digital Enhanced Cordless
Telecommunications/Global System for Mobile communications (DECT/GSM) Interworking Profile (GIP)
standards and Technical Bases for Regulation (TBRs) and how they may be applied. Most attention is
given to DECT/GSM interworking via the GSM A-interface, as this area of standardization is presently the
most advanced.
2 References
This ETR incorporates by dated and undated reference, provisions from other publications. These
references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this ETR
only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies.
[1] ETS 300 370: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) inter-working profile; Access and mapping (Protocol/procedure
description for 3,1 kHz speech service)".
[2] ETS 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]".
[3] ETS 300 434-1: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT) and Integrated Services Digital Network
(ISDN) interworking for end system configuration; Part 1: Interworking
specification".
[4] ETS 300 434-2: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT) and Integrated Services Digital Network
(ISDN) interworking for end system configuration; Part 2: Access profile".
[5] ETS 300 444: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Generic Access Profile (GAP)".
[6] ETS 300 466: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications/Global System for Mobile Communications
(DECT/GSM) interworking profile; General description of service requirements;
Functional capabilities and information flows".
[7] ETS 300 499: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile Communications
(DECT/GSM) interworking profile; Mobile services Switching Centre (MSC) -
Fixed Part (FP) interconnection".
[8] ETS 300 501: "European digital cellular telecommunications system (Phase 2);
Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN)
(GSM 02.02)".
[9] ETS 300 557: "Digital cellular telecommunications system (Phase 2); Mobile radio
interface layer 3 specification (GSM 04.08)".
[10] ETS 300 558: "Digital cellular telecommunications system (Phase 2); Mobile
radio interface layer 3; Supplementary services specification; General aspects
(GSM 04.10)".
[11] ETS 300 651: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Data Services Profile (DSP); Generic
data link service; Service type C, class 2".

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[12] ETS 300 702-1: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) interworking profile; Part 1: Profile Test Specification (PTS)
summary".
[13] ETS 300 703: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) Interworking Profile (IWP); GSM phase 2 supplementary services
implementation".
[14] ETS 300 704: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) Interworking Profile (IWP); Profile Implementation Conformance
Statement (ICS)".
[15] ETS 300 755: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Data services profile; Multimedia
Messaging Service (MMS) with specific provision for facsimile services; (Service
type F, class 2)".
[16] ETS 300 756: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) interworking profile; Implementation of bearer services".
[17] ETS 300 757: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Data services profile; Low rate
messaging service; (Service type E, class 2)".
[18] ETS 300 764: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) Interworking Profile (IWP); Implementation of short message
service, point-to-point and cell broadcast".
[19] ETS 300 787: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); DECT access to GSM via Integrated Services Digital Network
(ISDN); General description of service requirements".
[20] ETS 300 788: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); DECT access to GSM via Integrated Services Digital Network
(ISDN); Functional capabilities and information flows".
[21] ETS 300 792: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); DECT/GSM interworking profile; Implementation of facsimile
group 3".
[22] TBR 6: "Radio Equipment and Systems (RES); Digital Enhanced Cordless
Telecommunications (DECT); General terminal attachment requirements".
[23] TBR 10: "Radio Equipment and Systems (RES); Digital Enhanced Cordless
Telecommunications (DECT); General terminal attachment requirements;
Telephony applications".
[24] TBR 19: "European digital cellular telecommunications system (Phase 2);
Attachment requirements for Global System for Mobile communications (GSM)
mobile stations; Access".
[25] TBR 20: "European digital cellular telecommunications system (Phase 2);
Attachment requirements for Global System for Mobile communications (GSM)
mobile stations; Telephony".

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[26] TBR 22: "Radio Equipment and Systems (RES); Attachment requirements for
terminal equipment for Digital Enhanced Cordless Telecommunications (DECT)
Generic Access Profile (GAP) applications".
[27] TBR 36: "Radio Equipment and Systems (RES); Digital Enhanced Cordless
Telecommunications/Global System for Mobile communications (DECT/GSM);
DECT/GSM radio access".
[28] TBR 39: "Radio Equipment and Systems (RES); Digital Enhanced Cordless
Telecommunications/Global System for Mobile communications (DECT/GSM);
DECT/GSM dual-mode portables/mobiles".
[29] ISO/IEC 9646-6 (1991): "Information technology - Open Systems
Interconnection - Conformance testing methodology and framework - Part 6:
Protocol profile test specification".
[30] CCITT Recommendation Q.65 (1988): "Stage 2 of the method for the
characterization of services supported by an ISDN".
[31] CCITT Recommendation I.130 (1988): "Method for the characterization of
telecommunication services supported by an ISDN and network capabilities of
an ISDN".
[32] GSM TS 01.48: "Digital cellular telecommunications system (Phase 2+); ISDN-
based DECT/GSM interworking; Feasibility study".
[33] ETS 300 175: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Common Interface (CI)".
[34] DE/RES-03065: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Global System for Mobile
communications (GSM); DECT access to GSM Public Land Mobile Network
(PLMN) via enhanced Integrated Services Digital Network (ISDN+) interface,
bearer services and Short Message Service (SMS)".
[35] DE/RES-03066: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); DECT/GSM interworking profile; DECT access to GSM Public
Land Mobile Network (PLMN) via enhanced Integrated Services Digital Network
(ISDN+) interface".
[36] DE/RES-03067: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications (DECT); Global System for Mobile
communication (GSM); DECT access to GSM Public Land Mobile Network
(PLMN) via enhanced Integrated Services Digital Network (ISDN+) interface;
GSM supplementary services".
[37] DE/RES-03079: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) inter-working profile; Enhanced DECT/GSM bearer services".
[38] DTR/RES-03095: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); Integration based on dual-mode terminals".
[39] DTR/RES-03096: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM); Advanced integration of dual-mode terminals".
[40] DE/RES-03097: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) inter-working profile: DECT/GSM interworking to General Packet
Radio Service (GPRS)".

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[41] DE/RES-03098: "Radio Equipment and Systems (RES); Digital Enhanced
Cordless Telecommunications/Global System for Mobile communications
(DECT/GSM) inter-working profile: DECT/GSM interworking to High Speed
Circuit Switched Data service (HSCSD)".
[42] DE/SPS-05121: "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) protocol and Signalling System No.7
protocol; Signalling application for the alpha interface of Cordless Terminal
Mobility (CTM)".
[43] ITU-T Recommendation Q6XX Series: "Interworking of signalling systems".
3 Abbreviations and Definitions
3.1 Abbreviations
For the purposes of this ETR, the following abbreviations apply:
ADPCM Adaptive Pulse Code Modulation
BTS Base Transceiver Station
CBS Cell Broadcast Services
CC Call Control
CTA Cordless Terminal Adapter
CTM Cordless Terminal Mobility
DAM DECT Authentication Module
DCS 1 800 Digital Cellular System 1 800
DECT Digital Enhanced Cordless Telecommunications
DSS1 Digital Subscriber Signalling No. 1
DTMF Dual Tone Multi-Frequency
EC European Commission
FP Fixed Part
GAP Generic Access Profile
GIP DECT/GSM Interworking Profile
GSM Global System for Mobile communications
GPRS General Packet Radio Service
HLR Home Location Register
HSCSD High Speed Circuit Switched Data service
IAP DECT-ISDN interworking profile
IMSI International Mobile Subscriber Identity
ISDN Integrated Services Digital Network
IWU Interworking Unit
LAPU Link Access Procedure: User plane
MM Mobility Management
MSC Mobile Switching Centre
NT Non-Transparent
PBX Private Branch Exchange
PLMN Public Land Mobile radio Network
PP Portable Part
PSTN Public Switched Telephone Network
RAP RLL Access Profile
RFP Radio Fixed Part
RLL Radio Local Loop
SIM Subscriber Identity Module
SMS Short Message Services
TBR Technical Basis for Regulation
TMSI Temporary Mobile Subscriber Identity
VLR Visitor Location Register
WRS Wireless Relay Station

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3.2 Definitions
For the purposes of this ETR, the definitions given in ETS 300 370 [1] apply. In addition, the following
definitions apply.
DSS1+: Enhanced Digital Subscriber Signalling No. 1 (DSS1) protocol with new messages for mobility
and authentication.
ISDN+: Enhanced Integrated Services Digital Network (ISDN) with mobility and authentication capabilities.
4 Introduction
DECT is a standard for short range, low power, digital cordless communications. GSM is a standard for
digital radio telephony and data networks, offering high tier mobility. The combination of DECT with GSM
offers new possibilities.
There are three approaches to DECT/GSM integration:
- Dual mode terminal with no interworking;
- A-interface interconnection;
- ISDN+ interconnection.
The main body of this ETR describes the GIP based on the GSM A-interface. DECT access to GSM via
Integrated Services Digital Network (ISDN) is described in annex A. Dual mode terminals are outlined in
annex B but will be described in other ETRs (DTR/RES-03095 [38] and DTR/RES-03096 [39]) and in
TBR 39 [28]. Annex C outlines future standardization work for GIP based on A-interface interconnection.
Annex D of this ETR describes some scenarios of DECT/GSM integration, based on one or more of the 3
approaches above.

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DECT
common
interface
RFP
PP
(GIP)
PTN,
PSTN, )
FP/IWU
ISDN
RFP
A-
interface
DECT
MSC/VLR
GSM
SIM
A-
interface
MAP
GSM air
BSC
inte rfa ce
A-bis
HLR BTS
MS
BTS
Figure 1: DECT/GSM interworking based on A-interface interconnection
DECT/GSM interworking based on A-interface interconnection is shown in figure 1. The DECT Fixed Part
(FP) is connected to the GSM Mobile Switching Centre (MSC) on the GSM A-interface. Interworking Units
(IWUs) in the DECT FP and Portable Part (PP) make the translation between DECT and GSM layer 3
protocols. To the MSC, the DECT FP appears like a base station system (BSS). An advantage of this
method of interworking is that no changes to the A-interface or MSCs are required. However, changes to
the A-interface may be considered in the future for more efficient interworking (e.g. to allow Adaptive
Pulse Code Modulation (ADPCM), DECT specific bearer services).
The terminal that attaches to the FP is a GIP compliant DECT PP and accepts a card with a Subscriber
Identity Module (SIM). It can roam between Radio Fixed Parts (RFPs) connected to the same FP, or
between RFPs connected to different RFPs by involving the MSC. The SIM can be physically moved to a
ME which accesses the Public Land Mobile radio Network (PLMN) via the GSM air interface.
NOTE: For more advanced scenarios involving dual mode terminals, see annex D.

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5 DECT/GSM Interworking profiles - A-interface
5.1 Summary
This clause is a summary of the GIP standards, based on A-interface interconnection. These standards
add detail to DECT Common Interface specification ETS 300 175 [33] and the Generic Access Profile
(GAP), ETS 300 444 [5] to enable DECT terminals to inter-work in the public and private environment with
DECT systems which are connected to a MSC. Inter-working is based on GSM PLMN phase 2.
The topics covered are:
Topic Document ref.
Service requirements ETS 300 466 [6]
Access/mappings for 3,1 kHz speech service ETS 300 370 [1]
Test specifications for ETS 300 370 [1] ETS 300 702-1 [12]
PICS for ETS 300 370 [1] ETS 300 704 [14]
TBR for ETS 300 370 [1] TBR 39 [28]
MSC interconnection ETS 300 499 [7]
Supplementary services ETS 300 703 [13]
Bearer services ETS 300 756 [16]
Short Message Services (SMS) ETS 300 764 [18]
Facsimile ETS 300 755 [15]
Enhanced bearer services
Implementation of General Packet Radio
Service (GPRS)
Implementation of High Speed Circuit Switched
Data service (HSCSD)
5.2 GSM MSC to DECT FP interconnection ETS 300 499
Interconnection of the MSC to the DECT FP using the GSM A-interface is defined in ETS 300 499 [7].
ETS 300 499 [7] describes the modifications to the GSM 08.00 series which themselves describe the MSC
to BSS interconnection. As the IWU in the DECT FP makes the DECT FP appear to a MSC as a BSS, the
procedures on the A-interface are very similar to those described in the GSM 08.00 series. Only the
relevant procedures and restrictions are described in detail in ETS 300 499 [7].
The basic attachment of the FP to the MSC as specified in ETS 300 499 [7] is shown in figure 2.

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  "A" interface
Other applications
   Inter-working unit (IWU)
Modified BSS
MSC functionality
functionality
DECT
protocols
For detail see For detail see
ETS 300 499 ETS 300 499
Manage- Manage-
ment
ment
Physical media
DECT FP GSM MSC
Figure 2: Attachment to the GSM PLMN via the GSM A-interface
ETS 300 499 [7] is designed to allow the following:
1) connection of various manufactures FPs to the same MSC;
2) the use of the same FPs in any PLMN;
3) support of all services defined in the GIP.
The FP to MSC interface is based on the use of 1 or more 2 048 kbits/s digital transmission system
interfaces. Each 2 048 kbits/s interface provides 31 x 64 kbits/s channels which can be used for traffic or
signalling as the operator requires. The DECT radio path traffic channel is at a rate of 32 kbit/s. A rate
adapting function is therefore used for the rate conversion.
5.3 Access and mapping standards
In the following standards, IWUs are specified in the FP and PP for mapping DECT protocols to GSM
layer 3 protocols defined in ETS 300 557 [9] (GSM 04.08). IWU procedures and mappings are described
by following CCITT Recommendations Q.601 to Q.699 [43] and ISO 9646-6 [29]. The latter document
enables the subsequent generation of test cases.
The access and mapping standards are based on the GAP, ETS 300 444 [5] but interworking with GSM
networks adds some requirements such as:
- the PP has to support GSM PLMN authentication algorithms, which are different from the standard
DECT authentication algorithms;
- the GSM PLMN cipher keys have to be used;
- GSM PLMN identities have to be used;
- interworking of GSM procedures to DECT procedures adds some protocol additions (compared to
GAP) to the DECT FP and PP;
- the PP has to support a SIM.

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5.3.1 Access and mapping for 3,1 kHz speech service, ETS 300 370
ETS 300 370 [1] was the first of the GIP standards to be published and has been updated to a second
edition to include new functionality (e.g. Dual Tone Multi-Frequency (DTMF) and external handover).
ETS 300 370 [1] specifies how GSM 3,1 kHz speech service is mapped across the DECT air interface and
is organized as follows:
- interworking requirements - this part includes reference configurations, protocol architecture
models, and the main service requirements for GIP. The basis for inter-working is the GSM Call
Control (CC) and Mobility Management (MM) protocols and GSM paging procedures;
- IWU mappings for 3,1 kHz speech;
- connection types - identifies the main DECT connection types at the air interface supporting
optimized groups of services;
- external handover - i.e. in-call handover between different DECT FP s involving the MSC.
5.3.2 GSM Phase 2 supplementary services implementation, ETS 300 703
ETS 300 703 [13] specifies the PP interworking requirements and FP interworking requirements &
mappings necessary to ensure that GSM phase 2 supplementary services can be provided over a DECT
common interface.
The general interworking functions, the inter-working model, and the inter-working context, clause 5 in
ETS 300 370 [1] apply.
The protocol in ETS 300 558 [10] (GSM 04.10) is used for the support of supplementary services. The
GSM supplementary service messages are passed transparently.
5.3.3 Implementation of bearer services, ETS 300 756
ETS 300 756 [16] specifies the PP interworking requirements and FP interworking requirements &
mappings necessary to ensure that GSM bearer services can be provided over a DECT common
interface.
The general interworking functions, the inter-working model, and the inter-working context of
ETS 300 370 [1], clause 5 apply.
To enable DECT terminals to inter-work with DECT systems which are connected to the GSM
infrastructure, from the DECT side this ETS is based ETS 300 651 [11].
Of the GSM bearer services described in ETS 300 501 [8] (GSM 02.02), ETS 300 756 [16] supports only
Non-Transparent (NT) bearer services, i.e. GSM bearer services 21-26, 31-34, and 41-46. The DECT air
interface service used is a non-transparent link (Link Access Procedure: User plane (LAPU)) providing a
-9
bit error rate of 10 . The maximum rate used is 9,6 kbit/s although the DECT data profile service type C.2
can in single slot operation provide up to 24 kbit/s rate on the air interface. This limitation is due to the of
the GSM A-interface.
5.3.4 Implementation of facsimile group 3, ETS 300 792
The general interworking functions, the inter-working model, and the inter-working context of
ETS 300 370 [1], clause 5 apply.
GSM teleservice 61, automatic facsimile group 3, is based on ETS 300 755 [15].
GSM teleservice 62, alternate speech and facsimile group 3 is not currently supported, but may be in a
future edition of ETS 300 792 [21].

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5.3.5 Implementation of short message services, point to point and cell broadcast services,
ETS 300 764
ETS 300 764 [18] specifies the PP and FP interworking requirements & mappings necessary to ensure
that the GSM point-to-point short message services (GSM Teleservices 21 and 22) and Cell Broadcast
Service (GSM Teleservice 23) can be provided over a DECT common interface. Different parts of
ETS 300 764 [18] describe point to point SMS and Cell Broadcast Services (CBS).
The general interworking functions, the inter-working model, and the inter-working context of
ETS 300 370 [1], clause 5 apply for point-to-point SMS. ETS 300 764 [18] defines a new reference model
for CBS.
ETS 300 764 [18] is based on ETS 300 757 [17] for point-to-point SMS. For CBS, the basis is the CLMS
fixed service provided by the DECT common interface network layer in part 5 of ETS 300 175 [33]. For
CBS, only DECT air interface functions are defined.
6 Test specifications
Test specifications for ETS 300 370 [1] are based on the second edition of the ETS 300 370 [1]. Only the
air-interface is subject to testing.
ETS 300 370 [1] has a Protocol Implementation Conformance Statement (PICS), ETS 300 704 [14], and a
Profile Test Specification (PTS),
...