SIST ETS 300 370 E1:2003

• Abstract:

  Based on the GAP, develop a DECT air interface profile to achieve interoperability between PPs & FPs where the FT is attached to the GSM infrastructure (e.g. GSM A-interface). The minimum service to be supported is speech.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.060.20 - Receiving and transmitting equipment
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 370 ed.1 (1995-07) - Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Access and mapping (Protocol/procedure description for 3,1 kHz speech service)

SIST ETS 300 370 E1:2003 is the Slovenian adoption of ETS 300 370 Edition 1 from ETSI. It specifies a DECT/GSM inter-working profile for access and mapping so that GSM basic voice telephony, including 3,1 kHz speech service, can be carried over the DECT air interface between Portable Parts (PPs) and Fixed Parts (FPs).

What does SIST ETS 300 370 E1:2003 specify?

SIST ETS 300 370 E1:2003 specifies the DECT access protocols and FP/PP inter-working mappings needed to provide GSM basic voice telephony over DECT. It is based on the DECT Generic Access Profile (GAP) and the DECT Common Interface, and it assumes inter-working with a GSM PLMN phase 2 environment.

The profile is written for cases where the Fixed Termination (FT) is attached to GSM infrastructure such as the GSM A-interface. In that model, the FP emulates a GSM Base Station Controller (BSC) for the GSM messages that matter to this profile.

The document is organized into:

• Clause 5 - inter-working requirements, including reference configurations, the general model, location area mapping, and broadcast attribute interpretation.
• Clause 6 - inter-working mappings, including FP and PP C-plane mappings, FP U-plane procedures, message mappings, information element mappings, and coding fields.
• Clause 7 - inter-working connection types.
• Annex A - derivation of the DECT ciphering key CK from Kc.
• Annex C - physical attachment to the MSC, BSC, and BTS.

Annex	What it covers
Annex A	Derivation of the DECT ciphering key CK from Kc
Annex C	Physical attachment to the MSC, BSC, and BTS

What are the key requirements of SIST ETS 300 370 E1:2003?

SIST ETS 300 370 E1:2003 defines how GSM service behavior is mapped onto DECT signaling so that different manufacturers’ equipment can inter-work. The practical focus is not on radio planning or general GSM services, but on the exact procedures and field mappings needed for speech service, mobility management, and call control.

Inter-working model and scope

Clause 5 defines the inter-working context for FP attachment to the GSM PLMN. It covers the reference configuration, the general inter-working model, basic inter-working rules, location area mapping, and how broadcast attributes are interpreted. In practice, this is what keeps a DECT portable from treating a GSM-attached FP like a generic GAP FP.

Call control and mobility management

Clause 6.1.1 covers circuit-switched Call Control (CC) procedures such as normal outgoing call, emergency call, incoming call, call release, abnormal release, and exceptional cases. Clause 6.1.2 covers Mobility Management (MM) procedures such as authentication, identity handling, location registration, detach, temporary identity assignment, ciphering, CM service, abnormal CM service cases, and external handover. For implementers, this means the profile is explicit about how calls start, end, move, and recover when the network changes state.

Signaling mappings between GSM and DECT

Clause 6.1.6 maps GSM and DECT messages in both directions. It includes message pairs such as authentication, identity request, TMSI reallocation, ciphering mode, location updating, alerting, connect, setup, disconnect, release, and release complete. The tables identify which fields are mandatory, optional, ignored, or transferred transparently, so an implementer can see exactly what must be generated or preserved at each inter-working point.

Information element and field coding

Clause 6.1.7 maps information elements such as mobile identity, RAND, cipher key sequence, location area, identity type, reject cause, bearer capability, progress indicator, signal, and called-party number. Clause 6.1.8 then maps the field coding used inside those information elements. This matters because the profile is not only about message names - it also specifies how identities, location data, causes, and service indicators are encoded across the DECT/GSM boundary.

Security and identity handling

The profile considers the GSM Subscriber Identity Module (SIM), the DECT Authentication Module (DAM), and the GSM Application (GA) in the DECT portable. Clause 6.1.2.6 covers ciphering, and Annex A gives the algorithm to derive the DECT ciphering key CK from Kc. In practice, this is the part that tells an implementer how the portable and the FP cooperate on authentication and ciphering information.

PP behavior and DECT-side inter-working

Clause 6.3 gives the PP C-plane mappings, including call establishment, call release/reject, MM procedures, paging-related behavior, and external handover. It also includes rules for how the PP reacts to location updating results and reject reasons. That is important because the portable must behave correctly not only toward GSM, but also toward the DECT air interface and the user.

Connection types

Clause 7 defines the inter-working connection types used at the DECT air interface. These connection types group service behavior for the configurations supported by the profile. In practice, this tells an implementer which DECT connection structures are expected for the mapped GSM speech service.

What terms does SIST ETS 300 370 E1:2003 define?

Generic Access Profile (GAP) - A defined part of the DECT Common Interface that supports interoperability between FPs and PPs for public business and residential access services.

Fixed Part (FP) - The DECT network side equipment that provides the fixed radio access point for portable parts.

Fixed radio Termination (FT) - The part of the FP that handles the DECT air interface and the procedures on the fixed side.

Portable Part (PP) - The physical grouping between the user and the DECT air interface; it may consist of one or more physical pieces.

Portable radio Termination (PT) - The logical DECT function group on the portable side that contains the DECT procedures defined in the Common Interface.

Inter-Working Unit (IWU) - The unit that connects sub-networks and contains the inter-working functions needed for that connection.

location area - The domain in which a PP can receive and/or make calls after a single location registration.

subscription registration - The infrequent process by which a subscriber obtains access rights to one or more FPs.

Who uses SIST ETS 300 370 E1:2003?

SIST ETS 300 370 E1:2003 is used by DECT and GSM equipment designers, especially teams building portables, fixed parts, and inter-working units for speech service over DECT. It is also relevant to mobile network integrators that connect DECT equipment to GSM infrastructure through the A-interface or related GSM network attachments.

Quality managers, conformance engineers, and approval test labs use it to verify that call control, mobility management, identity handling, and ciphering behavior match the defined mappings. Operators and buyers use it when they need DECT equipment that can inter-work with GSM-connected fixed infrastructure rather than only with generic GAP systems.

What changed in SIST ETS 300 370 E1:2003 from the previous edition?

SIST ETS 300 370 E1:2003 is identical to ETS 300 370 Edition 1.

Which standards are used with SIST ETS 300 370 E1:2003?

SIST ETS 300 370 E1:2003 depends on the DECT Common Interface parts ETS 300 175-1 to ETS 300 175-8 for the DECT layers, identities, security features, and speech coding. It also uses prETS 300 444 for GAP, prETS 300 331 for the DECT Authentication Module, and prETS 300 466 for the broader DECT/GSM inter-working profile description.

For GSM-side behavior, it refers to GSM 01.02, GSM 01.04, ETS 300 522, ETS 300 551, PH2 GSM 04.08, ETS 300 580-1, ETS 300 590, and PH2 GSM 11.11. These provide the GSM network architecture, radio interface, BSS-MSC signaling, speech processing, and SIM/ME interface context that the profile maps to DECT.

For testing and approval, it refers to I-ETS 300 176 and ISO IS 9646-1, ISO IS 9646-6, and ISO/IEC 9646-7. These support conformance test design and implementation conformance statements.

It also cites ETR 015, ETR 043, ETR 056, ECMA TR/44, and Council Directive 91/263/EEC. These give the wider DECT reference framework, service requirements context, private-network architecture, and terminal directive context.

What does the SIST ETS 300 370 E1:2003 document contain?

The document contains procedure descriptions, message-mapping tables, information-element mappings, and field-by-field coding rules for GSM-to-DECT and DECT-to-GSM inter-working. Clause 6 uses detailed tables that show what is mapped, what is ignored, and what is transferred transparently, which is the core material for implementation and verification.

It also contains data flow and procedure descriptions for call control, mobility management, paging, ciphering, location registration, temporary identity assignment, and external handover. Annex A contains the CK derivation method, and Annex C contains the attachment scenarios for the MSC, BSC, and BTS.

The profile is written so that test cases can be derived from the mapping rules. For that reason, the document is useful not only for design, but also for conformance testing, interoperability checks, and implementation review.

SLOVENSKI STANDARD
01-december-2003
5DGLMVNDRSUHPDLQVLVWHPL5(6±3URILOPHGVHERMQHJDGHORYDQMDGLJLWDOQLK
HYURSVNLKEUH]YUYLþQLKWHOHNRPXQLNDFLMLQJOREDOQHJDVLVWHPDPRELOQLK
NRPXQLNDFLM'(&7*60±'RVWRSLQSUHVOLNDYDRSLVSRVWRSNDSURWRNRODJRYRUQH
VWRULWYHVSDVRYQRãLULQRN+]
Radio Equipment and Systems (RES);Digital European Cordless
Telecommunications/Global System for Mobile communications (DECT/GSM) inter-
working profile; Access and mapping (Protocol/procedure description for 3,1 kHz speech
service)
Ta slovenski standard je istoveten z: ETS 300 370 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 370
TELECOMMUNICATION July 1995
STANDARD
Source: ETSI TC-RES Reference: DE/RES-03017
ICS: 33.060, 33.060.20
DECT, GSM
Key words:
Radio Equipment and Systems (RES);
Digital European Cordless Telecommunications/
Global System for Mobile communications
(DECT/GSM) inter-working profile
Access and mapping
(Protocol/procedure description for 3,1 kHz speech service)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
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 1995. All rights reserved.
New presentation - see History box

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ETS 300 370: July 1995
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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ETS 300 370: July 1995
Contents
Foreword .9
Introduction.9
1 Scope .11
2 Normative references.11
3 Definitions, abbreviations and symbols.13
3.1 DECT definitions.13
3.2 Abbreviations .15
3.3 GSM abbreviations and definitions .17
3.4 Symbols for status columns.17
4 General.17
5 Inter-working requirements .18
5.1 General .18
5.2 Reference configurations.18
5.2.1 FP functional attachment to the GSM PLMN .18
5.3 General inter-working model for FP GSM PLMN attachment.19
5.4 Inter-working context .19
5.4.1 General.19
5.4.2 Basic inter-working rules .20
5.4.3 Location area mapping.21
5.4.4 Interpretation of broadcast attributes.21
6 Inter-working mappings, FP attached to the GSM PLMN .23
6.1 FP C-plane IWU procedures .23
6.1.1 CC IWU procedures.23
6.1.1.1 Normal outgoing call.23
6.1.1.2 Emergency call .26
6.1.1.3 Incoming call.26
6.1.1.4 Normal call release initiated by the PP .27
6.1.1.5 Normal call release initiated by the GSM PLMN.27
6.1.1.6 Abnormal call release initiated by the PP .28
6.1.1.7 Abnormal call release initiated by the GSM network .29
6.1.1.8 Exceptional cases.29
6.1.1.9 Other.30
6.1.2 MM IWU procedures .30
6.1.2.1 Authentication procedure.31
6.1.2.2 Identity procedure .32
6.1.2.3 Location registration related procedures .32
6.1.2.4 Detach procedure .35
6.1.2.5 Temporary identity assignment procedures .35
6.1.2.6 Ciphering procedure .37
6.1.2.7 CM service procedure .38
6.1.2.8 CM service procedure abnormal cases.39
6.1.2.9 External handover procedure .40
6.1.3 Paging related IWU procedure.40
6.1.4 Other specific IWU procedures .41
6.1.5 Exception handling .41
6.1.5.1 General.41
6.1.5.2 Timers.41
6.1.5.2.1 Mobility Management (MM) .41
6.1.5.2.2 Call Control (CC) .41
6.1.6 Message mappings .41

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ETS 300 370: July 1995
6.1.6.1 GSM to DECT . 41
6.1.6.1.1 AUTHENTICATION REQUEST-
AUTHENTICATION REQUEST . 42
6.1.6.1.2 AUTHENTICATION REJECT-
AUTHENTICATION-REJECT . 42
6.1.6.1.3 IDENTITY-REQUEST - IDENTITY-
REQUEST. 42
6.1.6.1.4 TMSI REALLOCATION COMMAND -
TEMPORARY-IDENTITY-ASSIGN. 43
6.1.6.1.5 CIPHERING MODE COMMAND -
CIPHER-REQUEST . 43
6.1.6.1.6 LOCATION UPDATING ACCEPT -
LOCATE-ACCEPT. 43
6.1.6.1.7 LOCATION UPDATING REJECT -
LOCATE-REJECT. 44
6.1.6.1.8 ALERTING - CC-ALERTING. 44
6.1.6.1.9 CALL-PROC - CC-CALL-PROC . 44
6.1.6.1.10 CONNECT - CC-CONNECT. 44
6.1.6.1.11 SETUP - CC-SETUP. 45
6.1.6.1.12 DISCONNECT - CC-RELEASE . 45
6.1.6.1.13 RELEASE - CC-RELEASE-COM. 45
6.1.6.1.14 RELEASE COMPLETE - CC-
RELEASE-COM . 46
6.1.6.1.15 CM SERVICE REJECT - CC-
RELEASE-COM . 46
6.1.6.1.16 ABORT - CC-RELEASE-COM. 46
6.1.6.2 DECT to GSM . 46
6.1.6.2.1 LOCATE-REQUEST - LOCATION-
UPDATING-REQUEST. 47
6.1.6.2.2 LCE-PAGE-RESPONSE - PAGING
RESPONSE . 48
6.1.6.2.3 AUTHENTICATION-REPLY -
AUTHENTICATION RESPONSE. 48
6.1.6.2.4 DETACH - IMSI DETACH
INDICATION . 48
6.1.6.2.5 TEMPORARY-IDENTITY-ASSIGN-
ACK - TMSI REALLOCATION
COMPLETE . 49
6.1.6.2.6 CC-SETUP - CM SERVICE
REQUEST. 49
6.1.6.2.7 IDENTITY-REPLY - IDENTITY
RESPONSE . 49
6.1.6.2.8 CC-ALERTING - ALERTING. 50
6.1.6.2.9 CC-CONNECT - CONNECT. 50
6.1.6.2.10 CC-INFO (F-02) - SETUP . 51
6.1.6.2.11 CC-RELEASE - DISCONNECT . 51
6.1.6.2.12 CC-RELEASE - RELEASE. 52
6.1.6.2.13 CC-RELEASE-COM - RELEASE. 52
6.1.6.2.14 CC-RELEASE-COM - RELEASE-
COMPLETE . 52
6.1.6.2.15 CC-SETUP - SETUP. 53
6.1.6.2.16 CC-SETUP - EMERGENCY-SETUP . 54
6.1.6.2.17 CC-RELEASE - CM SERVICE
ABORT. 54
6.1.6.2.18 CC-RELEASE-COM - CM SERVICE
REJECT . 55
6.1.7 Information element mappings . 55
6.1.7.1 GSM to DECT . 55
6.1.7.1.1 Mobile identity - NWK assigned
identity . 55
6.1.7.1.2 Authentication parameter RAND -
RAND . 55

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ETS 300 370: July 1995
6.1.7.1.3 Cipher key sequence number - Auth
type .56
6.1.7.1.4 Location area identification - Location
area.56
6.1.7.1.5 Identity type - Identity type .57
6.1.7.1.6 Reject cause - Reject reason.57
6.1.7.1.7 Bearer capabilities 1 - Basic service.57
6.1.7.1.8 Progress indicator - Progress indicator.57
6.1.7.1.9 Cause - Release reason .58
6.1.7.1.10 Reject cause - Release reason.58
6.1.7.1.11 Signal - Signal.58
6.1.7.2 DECT to GSM.58
6.1.7.2.1 Portable identity - Mobile identity .58
6.1.7.2.2 Network assigned identity- Mobile
identity.59
6.1.7.2.3 Location area - Location area
identification.59
6.1.7.2.4 Cipher info - Cipher key sequence
number.59
6.1.7.2.5 RES - Auth. parameter SRES.60
6.1.7.2.6 Portable identity- Mobile identity .60
6.1.7.2.7 Basic service - CM service type.60
6.1.7.2.8 Setup capability- Mobile station
classmark 1.60
6.1.7.2.9 Basic service - Mobile station
classmark 2.61
6.1.7.2.10 Basic service - Bearer capabilities.61
6.1.7.2.11 Called-party-number - Called-party-
number.61
6.1.7.2.12 Multi keypad - Called-party-number.62
6.1.7.2.13 Multi keypad - Keypad facility (F-10).62
6.1.7.2.14 Release reason - Cause .62
6.1.8 Fields in information element coding.62
6.1.8.1 GSM to DECT.63
6.1.8.1.1 Protocol discriminator - Protocol
discriminator .63
6.1.8.1.2 Transaction identifier - Transaction
identifier .63
6.1.8.1.3 Message type - Message type .63
6.1.8.1.4 Id for info element (IEI) - id for info
element .63
6.1.8.1.5 Length of contents - length of contents.63
6.1.8.1.6 Type, (Mobile identity, NWK assigned
identity) .63
6.1.8.1.7 Identity value, (Mobile identity, NWK
assigned identity) .64
6.1.8.1.8 Y/N bit (Encryption information -
Cipher info) .64
6.1.8.1.9 RAND field (RAND - RAND) .64
6.1.8.1.10 Cipher key number (Key sequence -
Cipher key number) .64
6.1.8.1.11 Extended location information
(Location area identification - Location
Area) .65
6.1.8.1.12 Identity group (Identity type - Identity
type).65
6.1.8.1.13 Type (Identity type - Identity type).65
6.1.8.1.14 Type, (Mobile identity, Portable
identity) .65
6.1.8.1.15 Portable user type, (Mobile identity,
Portable identity) .66
6.1.8.1.16 Identity value, ( Mobile identity -
Portable identity) .66

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ETS 300 370: July 1995
6.1.8.1.17 Reject cause value - Reject reason
code. 66
6.1.8.1.18 Coding-standard - coding-standard. 66
6.1.8.1.19 Information transfer capability - Call
Class . 67
6.1.8.1.20 Information transfer capability - basic
service. 67
6.1.8.1.21 Location - location . 67
6.1.8.1.22 Progress-description - progress-
description. 68
6.1.8.1.23 Cause-value - release-reason-code. 68
6.1.8.1.24 Signal value - signal value. 68
6.1.8.1.25 Skip Indicator - Transaction identifier. 69
6.1.8.1.26 Reject cause value - Release reason
code. 69
6.1.8.2 DECT to GSM . 69
6.1.8.2.1 Protocol discriminator -Protocol
discriminator. 69
6.1.8.2.2 Transaction identifier - Transaction
identifier. 69
6.1.8.2.3 Message type - Message type . 69
6.1.8.2.4 Id for info element - id for info element
(IEI). 69
6.1.8.2.5 Length of contents - length of contents 69
6.1.8.2.6 Length of identity value (Portable
identity - Mobile identity). 70
6.1.8.2.7 Type, (Portable identity - Mobile
identity). 70
6.1.8.2.8 Portable user type, (Portable identity -
Mobile identity) . 70
6.1.8.2.9 Identity value, (Portable identity -
Mobile identity) . 70
6.1.8.2.10 Type, (NWK assigned identity - Mobile
identity). 70
6.1.8.2.11 Identity value, (NWK assigned identity
- Mobile identity) . 70
6.1.8.2.12 Extended location information,
(Location area - Location area
identification) . 71
6.1.8.2.13 Cipher key number, (Cipher info -
Cipher key sequence number). 71
6.1.8.2.14 RES field (RES - Auth. parameter
SRES) . 71
6.1.8.2.15 Type, (Portable identity - Mobile
identity). 71
6.1.8.2.16 Call class, (Basic service - CM service
type) . 72
6.1.8.2.17 Profile indicator, (Profile indicator -
Mobile station classmark 1). 72
6.1.8.2.18 Basic service, (Basic service - Mobile
station classmark 2) . 72
6.1.8.2.19 Call Class - Information transfer
capability . 72
6.1.8.2.20 Basic service - Information transfer
capability . 72
6.1.8.2.21 Number-type - type-of-number. 73
6.1.8.2.22 Numbering-plan identification -
numbering-plan identification . 73
6.1.8.2.23 Release-reason-code - cause-value . 73
6.1.8.2.24 Transaction identifier - Skip indicator. 74
6.2 FP U-Plane IWU procedures . 74
6.2.1 Service activation. 74
6.3 PP C-plane IWU mappings . 74

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ETS 300 370: July 1995
6.3.1 CC IWU procedures.74
6.3.1.1 Call establishment procedure .74
6.3.1.2 Call release/reject procedures.74
6.3.2 MM IWU procedures .75
6.3.2.1 Authentication procedure.76
6.3.2.2 Identity procedure .76
6.3.2.3 Location registration procedure .77
6.3.2.4 Detach procedure .79
6.3.2.5 Temporary identity assignment procedure .79
6.3.2.6 Ciphering related procedure .80
6.3.2.7 External handover procedure .81
6.3.3 Paging related IWU procedure.81
6.3.4 Message mappings .81
6.3.5 Information element mappings.81
7 Inter-working connection types.82
7.1 Connection type definitions.82
Annex A (normative): Derivation of the DECT ciphering key CK .83
A.1 Introduction.83
A.2 Algorithm to calculate the DECT CK from Kc.83
Annex B (normative): Deletion of the GSM Kc, CKSN, TMSI and LAI.84
Annex C (informative): Physical attachment models for the FP.85
C.1 Introduction.85
C.2 Physical attachment to the MSC .85
C.3 Physical attachment to the BSC.85
C.4 Physical attachment to the BTS .85
Annex D (informative): References to not yet approved standards.86
History.87

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ETS 300 370: July 1995
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Proposed transposition dates
Date of latest announcement of this ETS (doa): 31 Octobre 1995
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 April 1996
Date of withdrawal of any conflicting National Standard (dow): 30 April 1996
Introduction
This ETS is a part of a set of standards for the DECT/GSM IWP concept that includes:
- General description of service requirements, functional capabilities and information flows;
- Access and mapping (protocol/procedure description for 3,1 kHz speech service), (this ETS);
- Support of GSM Phase 2 supplementary services (for further study);
- Fixed Interconnection (for further study).
This ETS is based on Digital European Cordless Telecommunications (DECT) Common Interface
specification ETS 300 175 [1] to [8] to enable DECT terminals to inter-work in the public and private
environment with DECT systems which are connected to a Global System for Mobile communications
(GSM) core infrastructure.
In addition, this ETS is based on the DECT Generic Access Profile (GAP) [9] to enable the same
DECT/GSM terminal to inter-work with a DECT Fixed Part (FP) complying to the GAP requirements,
irrespective of whether this FP provides residential, business or public access services.
This ETS utilises in addition to the only GAP related features and procedures the following:
- GSM authentication;
- derivation of the DECT ciphering key from the respective GSM cipher key;
- the GSM International Mobile Subscriber Identity (IMSI) and Temporary Mobile Subscriber Identity
(TMSI); and
- the GSM Location Area Identity (LAI).
This ETS defines a general purpose, but strict, mobility profile in terms of features, procedures, data
structures, information elements and fields within the information elements at the DECT air interface in
order to achieve full inter-operability between equipment i.e. DECT systems and terminals, which fulfil the
requirements of this ETS. This ETS also fulfils the minimum requirements of the GAP enabling backwards
compatibility with the respective equipment.

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ETS 300 370: July 1995
Blank page
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ETS 300 370: July 1995
1 Scope
This ETS specifies the DECT access protocols and FP and Portable Part (PP) inter-working/mappings
necessary to ensure that the Global System for Mobile communications (GSM) basic voice telephony
service can be provided over DECT. 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 on the GAP [9] and on
the DECT Common Interface specification ETS 300 175 [1] to [8] (for the cases not covered by GAP),
from GSM side this ETS assumes inter-working with GSM Public Land Mobile Network (PLMN) phase 2.
An air-interface profile is specified for a particular set of GSM services so that inter-operability of DECT
equipment for these services can be achieved. Inter-working functions/mappings are specified for Mobile
Switching Centre (MSC) attachment for the DECT FP as the FP is using the A-interface towards the GSM
MSC in the respect that the FP emulates a GSM Base Station Controller (BSC) with regards to the GSM
messages which are relevant to this ETS. Inter-working functions/mappings for the PP are specified for
MSC environment.
The provision of the GSM Subscriber Identity Module (SIM) and DECT Authentication Module (DAM) with
the GSM Application (GA) within the DECT portable are also considered.
Mobility Management (MM) and circuit-switched Call Control (CC) functionality are covered.
The RR-Management and other GSM specific functionality at the GSM A-interface, interfaces to non
GSM-networks, supplementary services, and other GSM data services are outside the scope of this ETS.
A PP conforming to this ETS should be capable of distinguishing a FP conforming to this ETS from a FP
conforming to the GAP and to access and to react upon accordingly.
2 Normative references
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative 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 ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 175-1: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 1: Overview".
[2] ETS 300 175-2: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 2: Physical
layer".
[3] ETS 300 175-3: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 3: Medium
access control layer".
[4] ETS 300 175-4: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 4: Data link
control layer".
[5] ETS 300 175-5: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 5: Network
layer".
[6] ETS 300 175-6: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 6: Identities and
addressing".
[7] ETS 300 175-7: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 7: Security
features".
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[8] ETS 300 175-8: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 8: Speech
coding and transmission".
[9] prETS 300 444: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT): Generic Access Profile (GAP)".
[10] prETS 300 331: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface: DECT Authentication
Module".
[11] I-ETS 300 176: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Approval test specification".
[12] 91/263/EEC: "Council Directive of 29 April 1991 on the approximation of the
laws of the Member states concerning telecommunications terminal equipment,
including the mutual recognition of their conformity". (Terminal Directive).
[13] ETR 015: "Digital European Cordless Telecommunications Reference
document".
[14] ETR 043: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT) Common Interface Services and Facilities
requirements specification".
[15] ETR 056: "Digital European Cordless Telecommunications System description
document".
[16] prETS 300 466: "Digital European Cordless Telecommunications/Global System
for Mobile Communications (DECT/GSM) Inter-working profile: General
Description of Service Requirements, Functional Capabilities and Information
flows".
[17] Reserved.
[18] ECMA TR/44 (1989): "An architectural framework for private networks".
[19] GSM 01.02: "European digital cellular telecommunication system (Phase 2);
General Description of a GSM PLMN".
[20] GSM 01.04: "European digital cellular telecommunication system (Phase 2);
Abbreviations and acronyms".
[21] ETS 300 522: "European digital cellular telecommunication system; Network
architecture GSM 03.02 - phase 2".
[22] ETS 300 551: "European digital cellular telecommunication system; GSM PLMN
Access Reference Configuration GSM 04.02 - phase 2".
[23] PH2 GSM 04.08 (v4.8.0): "European digital cellular telecommunication system;
Mobile Radio Interface - Layer 3 Specification GSM 04.08 - phase 2".
[24] ETS 300 580-1: "European digital cellular telecommunication system; Speech
Processing Functions: General Description GSM 06.01 - phase 2".
[25] ETS 300 590: "European digital cellular telecommunication system; BSS-MSC
Layer 3 Specification GSM 08.08 - phase 2".
[26] PH2 GSM 11.11: "European digital cellular telecommunication system;
Specifications of the SIM/ME interface GSM 11.11 - phase 2".

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ETS 300 370: July 1995
[27] ISO IS 9646-1: "Information Technology - OSI Conformance Testing
Methodology and Framework, Part 1: General Concepts".
[28] ISO IS 9646-6: "Information Technology - OSI Conformance Testing
Methodology and Framework, Part 6: Protocol Profile Test Specification".
[29] ISO/IEC 9646-7 (1992): "Information Technology - OSI Conformance Testing
Methodology and Framework, Part 7: Implementation Conformance Statements"
(working draft for CD 9646-7).
3 Definitions, abbreviations and symbols
3.1 DECT definitions
For the purposes of this ETS, the following DECT definitions apply:
attach: The process whereby a PP within the coverage area of a FP to which it has access rights, notifies
this FP that it is operative. The reverse process is detach, which reports the PP as inoperative.
NOTE 1: An operative PP is assumed to be ready to receive calls.
authentication: The process whereby a DECT subscriber is positively verified to be a legitimate user of a
particular FP.
NOTE 2: Authentication is generally performed at call set-up, but may also be done at any other
time (e.g. during a call).
bearer service: A type of telecommunication service that provides a defined capability for the
transmission of signals between user-network interfaces.
NOTE 3: The DECT user-network interface corresponds to the top of the network layer (layer 3).
C-plane: The control plane of the DECT protocol stacks, which contains all of the internal DECT protocol
control, but may also include some external user information.
NOTE 4: The C-plane stack always contains protocol entities up to and including the network
layer.
call: All of the NetWorK (NWK) layer processes involved in one network layer peer-to-peer association.
NOTE 5: Call may sometimes be used to refer to processes of all layers, since lower layer
processes are implicitly required.
DECT NetWork (DNW): A network that uses the DECT air interface to interconnect a local network to one
or more portable applications. The logical boundaries of the DECT network are defined to be at the top of
the DECT network layer.
NOTE 6: A DECT NetWork (DNW) is a logical grouping that contains one or more fixed radio
termination plus their associated portable radio termination. The boundaries of the
DECT network are not physical boundaries.
Fixed Part (DECT Fixed Part) (FP): A physical grouping that contains all of the elements in the DECT
network between the local network and the DECT air interface.
NOTE 7: A DECT FP contains the logical elements of at least one fixed radio termination, plus
additional implementation specific elements.
Fixed Part GSM PLMN Attachment (DECT Fixed Part attached to a GSM MSC): A definition of a
functional environment where a DECT system (FP) is attached to an GSM MSC. The MSC in this case
refers to a functional entity providing the required MM and CC functionality defined in this ETS in order to
communicate with the FP.
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Fixed radio Termination (FT): A logical group of functions that contains all of the DECT processes and
procedures on the fixed side of the DECT air interface.
NOTE 8: A fixed radio termination only includes elements that are defined in the DECT CI
standard. This includes radio transmission elements together with a selection of layer
2 and layer 3 elements.
Generic Access Profile (GAP): A defined part of the DECT Common Interface standard (DECT CI) that
ensures inter-operability between FPs and PPs for public business and residential access services.
geographically unique identity: This term relates to FP identities, Primary Access Rights Identities
(PARIs) and Radio Fixed Part Identities (RFPIs). It indicates that two systems with the same PARI, or
respectively two RFPs with the same RFPI, can not be reached or listened to at the same geographical
position.
Global NetWork (GNW): A telecommunication network capable of offering a long distance
telecommunication service.
NOTE 9: The term does not include legal or regulatory aspects, nor does it indicate if the
network is a public or a private network.
globally unique identity: The identity is unique within DECT (without geographical or other restrictions).
handover: The process of switching a call in progress from one physical channel to another physical
channel. These processes can be internal (see internal handover) or external (see external handover).
NOTE 10: There are two physical forms of handover, intra-cell handover and inter-cell handover.
Intra-cell handover is always internal. Inter-cell handover can be internal or external.
incoming call: A call received at a PP.
inter-cell handover: The switching of a call in progress from one cell to another cell.
internal handover: Handover processes that are completely internal to one Fixed radio Termination (FT).
Internal handover re-connects the call at the lower layers, while maintaining the call at the NWK layer.
NOTE 11: The lower layer reconnection can either be at the Data Link Control (DLC) layer
(connection handover) or at the MAC layer (bearer handover).
inter-operability: The capability of FPs and PPs, that enable a PP to obtain access to teleservices in
more than one location area and/or from more than one operator (more than one service provider).
inter-operator roaming: Roaming between FP coverage areas of different operators (different service
providers).
Inter-Working Unit (IWU): A unit that is used to interconnect sub-networks.
NOTE 12: The IWU will contain the inter-working functions necessary to support the required
sub-network inter-working.
intra-cell handover: The switching of a call in progress from one physical channel of one cell to another
physical channel of the same cell.
intra-operator roaming: Roaming between different FP coverage areas of the same operator (same
service provider).
Local NetWork (LNW): A telecommunication network capable of offering local telecommunication
services.
NOTE 13: The term does not include legal or regulatory aspects, nor does it indicate if the
network is a public network or a private network.

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locally unique identity: The identity is unique within one FP or location area, depending on application.
location area: The domain in which a PP may receive (and/or make) calls as a result of a single location
registration.
location registration: The process whereby the position of a DECT portable termination is determined to
the level of one location area, and this position is updated in one or more databases.
NOTE 14: These databases are not included within the DECT FT.
Medium Access Control (MAC) Connection: An association between one source MAC Multi-Bearer
Control (MBC) entity and one destination MAC MBC entity. This provides a set of related MAC services (a
set of logical channels), and it can involve one or more underlying MAC bearers.
outgoing call: A call originating from a PP.
Portable Application (PA): A logical grouping that contains all the elements that lie beyond the DECT
network boundary on the portable side.
NOTE 15: The functions contained in the portable application may be physically distributed, but
any such distribution is invisible to the DECT network.
Portable Part (DECT Portable Part) (PP): A physical grouping that contains all elements between the
user and the DECT air interface. PP is a generic term that may describe one or several physical pieces.
NOTE 16: A DECT PP is logically divided into one portable termination plus one or more portable
applications.
Portable radio Termination (PT): A logical group of functions that contains all of the DECT processes
and procedures on the portable side of the DECT air interface.
NOTE 17: A PT only includes elements that are defined in the DECT CI standard. This includes
radio transmission elements (layer 1) together with a selection of layer 2 and layer 3
elements.
Radio Fixed Part (RFP): One physical sub-group of an FP that contains all the radio end points (one or
more) that are connected to a single system of antennas.
registration: An ambiguous term, that should always be qualified. See either location registration or
subscription registration.
roaming: The movement of a PP from one FP coverage area to another FP coverage area, where the
capabilities of the FPs enable the PP to make or receive calls in both areas.
NOTE 18: Roaming requires the relevant FPs and PP to be inter-operable.
subscription registration: The infrequent process whereby a subscriber obtains access rights to one or
more FPs.
NOTE 19: Subscription registration is usually required before a user can make or receive calls.
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ARI Access Rights Identity (see SARI and TARI)
BCD Binary Coded Decimal
BSC GSM Base Station Controller
CC Call Control
CCITT (The) International Telegraph and Telephone Consultative Committee
CI Common Interface
CISS Call Independent Supplementary Services

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CK Cipher Key.
CLMS ConnectionLess Message Service
COMS Connection Oriented Message Service
CRSS Call Related Supplementary Services
DAM DECT Authentication Module
DAM DA DECT Authentication Module DECT Application
DAM GA DECT Authentication Module, GSM Application
DECT Digital European Cordless Telecommunications
DLC Data Link Control Layer
DSAA DECT Standard Authentication Algorithm
DTMF Dual Tone Multi-Frequency
FP Fixed Part
FT Fixed radio Termination
GAP Generic Access Profile
IMEI International Mobile Equipment Identity
IMSI International Mobile Subscriber Identity
IPEI International Portable Equipment Identity
IPUI International Portable User Identity
ISDN Integrated Services Digital Network
ISO International Organisation for Standardisation
ISUP Integrated Services Digital Network User Part
IWU Inter-Working Unit
K authentication Key
LCE Link Control Entity
LLME Lower Layer Management Entity
MAC Medium Access Control Layer
MAP GSM Mobile Application Part
MM Mobility Management
MSB Most Significant Bit
MS Mobile Station
MSC Mobile Switching Centre
NWK NetWorK Layer
OSI Open Systems Interconnection
PA Portable Application
PARI Primary Access Rights Identity
PARK Portable Access Rights Key
PCM Pulse Coded Modulation
PE Portable Equipment
PLMN Public Land Mobile Network
PP Portable Part
PSTN Public Switched Telephone Network
PT Portable radio Termination
PTNX Private Telecommunications Network eXchange
PUN Portable User Number
PUT Portable User Type
RAND A RANDdom challenge issued by a FP
RES A RESponse calculated by a PP
RFP Radio Fixed Part
RFPI Radio Fixed Part Identity
RS A value used to establish authentication session keys
SARI Secondary Access Rights Identity
SS Supplementary Services
SRES A GSM specific authentication response calculated by the GSM SIM or the DAM
TARI Tertiary Access Rights Identity
TMSI Temporary Mobile Subscriber Identity
TPUI Temporary Portable User Identity
TUP Telephony User Part
UPI User Personal Identification

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3.3 GSM abbreviations and definitions
Definition and specific GSM abbreviations may be found in GSM 01.04 [20].
3.4 Symbols for status columns
The symbols defined in this subclause are applied for procedures, features, messages, information
elements, fields and field codings in this ETS if not explicitly otherwise stated. The interpretation of status
columns in all tables is as follows:
- M for mandatory to map/support/use;
- O for optional to map/support/use;
- I for out-of-scope (not subject for testing);
- X for prohibited or excluded to map/support/use (the message, information element may be allowed
to be used in the standard/standards but it is not allowed to be mapped/used depending on the
environment/dynamic conditions etc.);
- N/A or -(dash) for not applicable to map/support/use;
- C for conditional to map/support/use (the message, information element mapping depends on the
selection of other optional or/and conditional items).
NOTE: The symbol "-" in the mapping section of this ETS means that there is no message,
information element or coding specified in this column.
4 General
This ETS specifies how GSM services are provided over the DECT air interface.
One of the main objectives is to describe how the GSM services are mapped across the DECT air
interface in a formal way, so that inter-operability of different manufacturer's equipment can be achieved.
This is done by describing the inter-working unit procedures and mappings loosely following CCITT
Recommendations Q.601 - Q.699 and by describing an air interface profile following ISO 9646-6 [28]. The
later document enables the subsequent generation of tests cases, if required.
This ETS is made up of 3 main clauses:
- clause 5: Inter-working requirements - includes reference configurations and the protocol
architecture models. Also describes the main service requirements. The context of the inter-working
profile is also required e.g. backwards compatible with GAP etc.
- clause 6: Inter-Working Unit (IWU) mappings - shows the C-plane and U-plane mappings for the
FP GSM PLMN attachment in respective order. Two IWUs are considered; the FP IWU and the PP
IWU, although the FP IWU is expected to be the largest. The signalling mappings are described in
terms of IWU procedures with informative data flow diagrams. Detailed descriptions follow using
tables of what is mapped, what is ignored, and what is transferred transparently. These clauses
also include other profile specific information such as security matters.
- clause 7: Connection types - this clause identifies the main DECT connection types (U-plane + C-
plane) at the air interface supporting optimised groups of services, from the IWU mappings for
different configurations/models.

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5 Inter-working requirements
5.1 General
This ETS defines the mandatory requir
...