SIST EN 301 242 V1.1.3:2005

• Abstract:

  To secify radio and network aspects related to dual-mode terminals. This EN will, in conjuction with other standards and TBRs, form the ba sis for the first edition of TBR 39, i.e. basic dual-mode terminals th at only consist of a DECT art and a GSM part and that may automaticall y switch between DECT and GSM modes. (Advanced dual-mode terminals, wh ere the DECT and GSM parts are further integrated, will be considered in a TR (DTR/DECT-010096). The same considerations apply for dual-mode DECT/DCS1800 terminals and for DECT/GSM/DCS1800 dual mode/dual band terminals. The term GSM is considered to cover all the frequency bands, and combinations of frequency bands allowed for GSM type equipment, i.e. P-GSM, E-GSM, R-G SM, DCS1800 or dual band GSM/DCS.

• Status: Published
• Publication Date: 30-Jun-2005
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2005
• Due Date: 01-Jul-2005
• Completion Date: 01-Jul-2005
• Ref Project: ETSI EN 301 242 V1.1.3 (1998-06) - Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM integration based on dual-mode terminals

Overview

SIST EN 301 242 V1.1.3:2005 defines requirements for the integration of Digital Enhanced Cordless Telecommunications (DECT) and Global System for Mobile Communications (GSM) in dual-mode terminals. These dual-mode devices incorporate both DECT and GSM functionalities, allowing users to switch between cordless and cellular modes, supporting automatic or manual selection. This standard is essential for manufacturers and service providers developing or deploying dual-mode DECT/GSM equipment and ensures interoperability and performance in multi-mode telecommunications environments.

The scope of this European Standard (EN) is to specify radio and network aspects relevant to basic dual-mode terminals. Such terminals include both DECT and GSM parts and can automatically or manually switch between modes, though they operate in only one mode at a time. The standard forms the basis for related technical and regulatory requirements, facilitating consistent implementation across networks and devices.

Key objectives of the standard include:

• Ensuring continuity of service when moving between DECT and GSM coverage.
• Defining terminal behavior during mode selection and switching.
• Specifying essential testing, conformance, and operational requirements for dual-mode functionality.

Key Topics

1. DECT/GSM Dual-Mode Functionality

• Dual-mode terminals (DMTs) can access both DECT and GSM networks but are active in only one mode at a time.
• Terminals must fully comply with applicable single-mode standards for whatever mode is currently active.
• Switching between modes can be triggered by automatic procedures (e.g., loss of coverage) or initiated manually by the user.

2. Mode Selection and Service Continuity

• Terminals support both automatic and manual mode selection.
• Background scanning procedures allow terminals to detect network availability in the inactive mode without disrupting the active service.
• Switching is not permitted during active communication, but after call completion a terminal can switch modes as needed.
• Preferred mode is user-configurable and mode switching aims to minimize service interruptions.

3. User Experience and Network Indications

• Terminals must display the currently active mode (DECT or GSM) to the user.
• Personal Identification Number (PIN) requirements follow GSM standards. Entry of the PIN may not be required when switching modes but is necessary on terminal power-up.

4. Testing of Dual-Mode Terminals

• Conformance testing is based on existing DECT and GSM standards, ensuring that dual-mode devices meet all requirements as if operating in single-mode.
• Radio, acoustic, protocol, and EMC (Electromagnetic Compatibility) testing is specified to validate performance and interoperability.

5. Protection Against Excessive Signalling

• Timer and counter mechanisms are stipulated to prevent frequent and unnecessary switches between modes, which could burden network resources.

Applications

Practical applications of SIST EN 301 242 V1.1.3:2005 include:

• Consumer devices: Development and deployment of dual-mode cordless/mobile handsets for seamless indoor (DECT) and outdoor (GSM) use.
• Enterprise communications: Providing organizations with flexible telephony solutions that leverage both on-site DECT coverage and wide-area GSM connectivity.
• Telecom network integration: Assisting network operators in supporting interoperability for new classes of subscriber equipment.
• Standardized testing: Ensuring compliance during product development and certification by adhering to a unified set of requirements.

This standard is particularly valuable for device manufacturers, network operators, and regulatory bodies overseeing telecommunication equipment conformance and interoperability.

Related Standards

For comprehensive implementation and compliance, the following standards are directly referenced or related to SIST EN 301 242 V1.1.3:2005:

• EN 300 444: DECT Generic Access Profile (GAP).
• ETS 300 434-2: DECT/ISDN interworking for end system configuration (ISDN Access Profile).
• ETS 300 511: GSM Man-Machine Interface (MMI) specifications.
• TBR 6, TBR 10, TBR 19, TBR 20, TBR 22, TBR 31, TBR 32, TBR 40: Series of terminal attachment requirements for DECT and GSM.
• EN 301 439: Attachment requirements for DECT/GSM dual-mode terminal equipment.
• TR 101 072: Integration guidance for DECT/GSM dual-mode terminals.

By aligning with these standards, organizations ensure compatibility, safety, and consistent performance across European and international telecommunications markets.

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Keywords: DECT, GSM, dual-mode terminal, cordless telecommunications, mobile communications, standardization, SIST EN 301 242, network integration, telecommunication equipment, interoperability.

SLOVENSKI STANDARD
01-julij-2005
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PRELOQLKNRPXQLNDFLM*60,QWHJUDFLMD'(&7*60GYR]YUVWQLWHUPLQDOL
Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile
communications (GSM); DECT/GSM integration based on dual-mode terminals
Ta slovenski standard je istoveten z: EN 301 242 Version 1.1.3
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
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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.

EN 301 242 V1.1.3 (1998-06)
European Standard (Telecommunications series)
Digital Enhanced Cordless Telecommunication (DECT);
Global System for Mobile communications (GSM);
DECT/GSM integration based on dual-mode terminals

2 EN 301 242 V1.1.3 (1998-06)
Reference
DEN/DECT-010124 (bi000ie0.PDF)
Keywords
DECT, GSM, radio, terminal
ETSI
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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 1998.
All rights reserved.
ETSI
3 EN 301 242 V1.1.3 (1998-06)
Contents
Intellectual Property Rights.4
Foreword .4
1 Scope.5
2 References.5
3 Definitions and abbreviations .7
3.1 Definitions . 7
3.2 Abbreviations. 7
4 General on DECT/GSM DMTs .8
5 Provisions for providing continuity of service.8
5.1 General. 8
5.2 Mode selection. 9
5.2.1 General requirements . 9
5.2.2 Procedures. 9
5.2.2.1 At switch-on. 9
5.2.2.2 Background scanning. 9
5.2.2.3 Automatic mode selection . 10
5.2.2.3.1 Preferred use of GSM networks. 10
5.2.2.3.2 Preferred use of DECT networks . 11
5.2.2.3.3 Protection against excessive signalling . 11
5.2.2.4 Location registration. 11
5.2.2.5 User re-selection of mode. 12
Annex A (normative): Testing of DECT/GSM DMTs.13
A.1 Radio testing .13
A.2 Acoustic testing.14
A.3 Protocol testing .15
A.4 EMC testing .15
Annex B (normative): Timers and constants .16
B.1 Timers .16
B.2 Constants.16
History.17
ETSI
4 EN 301 242 V1.1.3 (1998-06)
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 ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of
ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI
Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).
Pursuant to the ETSI Interim 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 ETR 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Project Digital Enhanced Cordless
Telecommunications (DECT).
National transposition dates
Date of adoption of this EN: 5 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI
5 EN 301 242 V1.1.3 (1998-06)
1 Scope
The purpose of the present document is to specify the additional requirements to the existing Global System for Mobile
communications (GSM) and Digital Enhanced Cordless Telecommunication (DECT) standards needed for DECT/GSM
Dual Mode Terminals (DMTs) that can perform background scanning and switch automatically between GSM and
DECT modes, but cannot be active in both modes at the same time.
For the DECT side, the DECT/GSM Interworking Profile (IWP) is not considered.
2 References
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in
which case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publications without mention of a specific version, in which case 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] ETS 300 434-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services
Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 2: Access
profile".
[2] EN 300 444: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile
(GAP)".
[3] ETS 300 511: "European digital cellular telecommunications system (Phase 2); Man-Machine
Interface (MMI) of the Mobile Station (MS) (GSM 02.30)".
[4] ETS 300 607-1: "Digital cellular telecommunications system (Phase 2); Mobile Station (MS)
conformance specification; Part 1: Conformance specification (GSM 11.10-1)".
[5] ETS 300 824: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal
Mobility (CTM); CTM Access Profile (CAP)".
[6] ETR 341: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile
communications (GSM); DECT/GSM Interworking Profile; Profile overview".
[7] TR 101 072: "Digital Enhanced Cordless Telecommunications/Global System for Mobile
Communications (DECT/GSM); Integration based on dual-mode terminals".
[8] EN 300 175-1: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 1: Overview".
[9] EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 2: Physical layer (PHL)".
[10] EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 3: Medium Access Control (MAC) layer".
[11] EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 4: Data Link Control (DLC) layer".
ETSI
6 EN 301 242 V1.1.3 (1998-06)
[12] EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 5: Network (NWK) layer".
[13] EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 6: Identities and addressing".
[14] EN 300 175-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 7: Security features".
[15] EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 8: Speech coding and transmission".
[16] TBR 6: "Radio Equipment and Systems (RES); Digital Enhanced Cordless Telecommunications
(DECT); General terminal attachment requirements".
[17] TBR 10: "Radio Equipment and Systems (RES); Digital Enhanced Cordless Telecommunications
(DECT); General terminal attachment requirements: Telephony applications".
[18] TBR 19: "European digital cellular telecommunications system (Phase 2); Attachment
requirements for Global System for Mobile communications (GSM) mobile stations; Access".
[19] TBR 20: "European digital cellular telecommunications system (Phase 2); Attachment
requirements for Global System for Mobile communications (GSM) mobile stations; Telephony".
[20] TBR 22: "Radio Equipment and Systems (RES); Attachment requirements for terminal equipment
for Digital Enhanced Cordless Telecommunications (DECT) DECT Generic Access Profile (GAP)
applications".
[21] TBR 31: "Digital cellular telecommunications system (Phase 2); Attachment requirements for
mobile stations in the DCS 1 800 band and additional GSM 900 band; Access".
[22] TBR 32: "Digital cellular telecommunications system (Phase 2); Attachment requirements for
mobile stations in the DCS 1 800 band and additional GSM 900 band; Access".
[23] TBR 40: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital
Network (ISDN); Attachment requirements for terminal equipment for DECT/ISDN interworking
profile applications".
[24] ITU-T Recommendation G.111: "Loudness ratings (LRs) in an international connection".
[25] EN 301 439: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile
communications (GSM); Attachment requirements for DECT/GSM dual-mode terminal
equipment". [Harmonized EN]
ETSI
7 EN 301 242 V1.1.3 (1998-06)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following definitions apply:
active communication: A state, where a communication link has been established between the DMT and a fixed part in
either GSM or DECT mode.
active mode: GSM or DECT mode after being selected and switch on procedures for that mode being performed.
background scanning: The process whereby a basic DMT attempts to identify the existence of stable networks in the
mode other than the one it is in to which the terminal has access rights.
basic dual mode terminal: A DMT that can only be in one mode at the time and that can be switched either manually
or automatically between modes. The basic DMT is always in one mode.
dual mode terminal: A terminal comprising both GSM and DECT parts.
GSM coverage: The sum of all GSM Public Land Mobile Network (PLMN) coverages where the DMT has at least
limited service.
GSM: In the present document, the GSM part of a DMT can be GSM 900, Digital Cellular System 1800 (DCS 1800) or
GSM/DCS dual band.
mode selection: A DMT based procedure, whereby operating mode, GSM or DECT, is chosen.
mode: A basic DMT is in either of the two modes GSM and DECT. In GSM mode the DMT behaves as a GSM Mobile
Station (MS) and in DECT mode the DMT behaves as a DECT Portable Part (PP).
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ARI Access Rights Identity
CAP CTM Access Profile
CTM Cordless Terminal Mobility
DCS Digital Cellular System
DECT Digital Enhanced Cordless Telecommunications
DMT Dual Mode Terminal
GAP Generic Access Profile
GSM Global System for Mobile communication
IAP ISDN Access Profile
IMSI International Mobile Subscriber Identity
IWP Interworking Profile
MS Mobile Station
PARK Portable Access Rights Key
PIN Personal Identification Number
PLMN Public Land Mobile Network
PP Portable Part
SIM Subscriber Identity Module
LSTR Listener's Sidetone Ratio
RLR Receiving Loudness Rating
SLR Sending Loudness Rating
ETSI
8 EN 301 242 V1.1.3 (1998-06)
4 General on DECT/GSM DMTs
A DMT is a terminal comprising both GSM and DECT parts, see TR 101 072 [7]. The DMT is in either GSM or DECT
mode. When in either mode, the DMT shall operate as the corresponding single mode terminal (except that it may
perform background scanning) and shall fully comply with the relevant standards for that single mode terminal (for
GSM see references in ETS 300 607-1 [4]; for DECT see EN 300 175 parts 1 to 8 [8]-[15] and EN 300 444 [2],
ETS 300 824 [5] or ETS 300 434-2 [1]), unless specified in the present document.
When one mode is entered the DMT shall operate like a single mode terminal that is switched on. When one mode is left
the DMT shall operate like a single mode terminal that is switched off (except for what is specified in subclause 5.2.2.4).
When the DMT switches mode, it shall leave the first before entering the second, and shall operate as two single mode
terminals where the first is switched off before the second is switched on.
In DECT mode it shall be possible to switch to GSM mode to make an emergency call.
Switching between the two modes is done manually by the user or automatically by the terminal. The DMT shall not
switch mode when in active communication. Automatically switching of mode can be based on background scanning or
loss of coverage. In the case the switching of modes is based on background scanning there are requirements to prevent
switching too frequently, see subclause 5.2.2.3 (if the switching is done automatically, the terminal may perform
background scanning and may then change mode as a result of it).
Entry of the Personal Identification Number (PIN) shall be done according to GSM 02.30 (ETS 300 511 [3]) at switch
on of the DMT with a Subscriber Identity Module (SIM) in or at insertion of the SIM when the DMT is switched on. At
the time of entering the PIN the DMT may be in DECT or GSM mode.
NOTE: In GSM mode a SIM card is mandatory except for emergency calls. In DECT mode SIM access is needed,
e.g. for the SIM phone book.
Switching of modes may be done without entering the PIN again. Unblocking PIN or PIN2 need not be supported in
DECT mode.
The DECT part of the DMT shall be based on at least one of the DECT profiles: Generic Access Profile (GAP)
(EN 300 444 [2]); Cordless Terminal Mobility (CTM) Access Profile (CAP) (ETS 300 824 [5]) or ISDN Access Profile
(IAP) (ETS 300 434-2 [1]).
The DECT/GSM IWP (ETR 341 [6]) is not covered by the present document.
5 Provisions for providing continuity of service
5.1 General
A DMT with valid International Mobile Subscriber Identity (IMSI) and/or Access Rights Identity/Portable Access
Rights Key (ARI/PARK) pairs may access service in the areas authorized by the entitlement of the subscriptions.
NOTE 1: DECT ARI class D is not covered in the present document.
If the DMT looses the coverage of the network currently in use, an established communication will be terminated. If the
user then wants to continue, another mode and/or network providing service has to be selected and a new
communication has to be established.
NOTE 2: Seamless handover of an active communication between GSM and DECT modes is thus not supported.
ETSI
9 EN 301 242 V1.1.3 (1998-06)
5.2 Mode selection
5.2.1 General requirements
The DMT shall support at least the following two mechanisms of mode selection:
- manual mode selection;
- automatic mode selection.
NOTE: Network controlled mode selection is not considered in the present document.
The user shall be given the opportunity to change mode selection mechanism at any time when the DMT is not in active
communication.
When the automatic mode selection mechanism is activated, either GSM or DECT shall be considered as the preferred
mode according to the users preference. The user shall be given the opportunity to change the preferred mode at any
time when the DMT is not in active communication.
When using the manual mode selection the user shall be given the opportunity to change the chosen mode at any time
except when in active communication. Background scanning may be implemented in the manual mode selection
mechanism, e.g. to give notification to the user on the availability of other networks.
The DMT shall give an indication to the user of the mode currently in use.
5.2.2 Procedure
...