Abstract

To specify how ISDN services can be provided over a DECT link. This part describes the DECT end-system reference configuration which is used where the DECT Fixed-System (DFS) and DECT Portable System (DPS) form together an end-system with the behaviour of an ISDN-TE.

Status
Published
Publication Date
30-Apr-1999
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-1999
Due Date
01-May-1999
Completion Date
01-May-1999

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SIST ETS 300 434-1:1999

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SIST ETS 300 434-1:1999 is the Slovenian standard identical to ETS 300 434-1 Edition 1, published under SIST. It specifies how Integrated Services Digital Network (ISDN) services are provided over a Digital Enhanced Cordless Telecommunications (DECT) link in an end system configuration. The document is for DECT Fixed System (DFS) and DECT Portable System (DPS) implementers, and for equipment claiming interoperability based on the ISDN Access Profile (IAP).

What does SIST ETS 300 434-1:1999 specify?

SIST ETS 300 434-1:1999 specifies the DECT/ISDN interworking needed for an end system configuration, including how the DFS and DPS together can behave like an ISDN Terminal Equipment (ISDN-TE). It focuses on the services that can be carried, the procedures used to map ISDN and DECT signalling, and the bearer support needed to make those services work in practice.

The standard covers public ISDN and private ISDN. It covers the bearer services speech, 3,1 kHz audio, and unrestricted digital information 64 kbit/s, and it considers ISDN supplementary services as well. Packet mode, mobility management such as location registration and subscription registration, and the application layer uses of the bearer services are outside the scope.

The document is organized into the scope, normative references, definitions, interworking requirements, interworking mappings, and bearer service support. It also has four annexes that add DECT layer details, describe LU7 data bearer behaviour, cover user identification, and show IWU call-control state behaviour.

AnnexWhat it covers
Annex AETS 300 175 additions and modifications for DECT layers
Annex BLU7 64 kbit/s data bearer service, including buffering, ARQ, FEC, procedures, and state variables
Annex CIdentification of the user in different DECT and ISDN layer 2 situations
Annex DIWU Call Control state transition diagram, states, and transition procedures

What are the key requirements of SIST ETS 300 434-1:1999?

SIST ETS 300 434-1:1999 defines the interworking rules that make ISDN services usable over DECT. In practice, implementers must follow the reference configuration, the mapping rules, and the bearer setup rules so that DECT equipment exchanges the right messages and information elements with ISDN.

End-system model and scope of interworking

Clause 4 defines the DECT end-system reference configuration and the interfaces used between the DECT and ISDN sides. The DECT Fixed System (DFS) and DECT Portable System (DPS) together form an end system with ISDN-TE behaviour, so the design has to be treated as one interworking system rather than two unrelated ends.

Clause 4 also sets the service framework. It covers bearer service requirements, teleservice requirements, and supplementary service requirements, so implementers need to check both call handling and service feature handling, not only basic speech calls.

Mapping between ISDN and DECT procedures

Clause 5 is the core of the standard. It defines how interworking procedures in the Interworking Unit (IWU) map DECT and ISDN behaviour in both directions, and it states that messages, information elements, and fields that are not mapped across the IWU shall be ignored or processed locally according to this ETS, ETS 300 175-9, or the relevant ISDN ETS.

The mapping is layered in a practical order: procedure description, message mapping, information element mapping, and then coding mapping. This matters because implementers must resolve a call or service event at the right layer instead of trying to translate one whole protocol block at once.

Clause 5 also covers Call Control (CC) procedures for setup, information transfer, and release. The message tables show which DECT and ISDN messages are mandatory, conditional, optional, ignored, or locally handled, which is what equipment builders use to decide what signalling must be supported for each service profile.

Supplementary services handling

Clause 4 and clause 5 include support for supplementary services through keypad protocol, feature key management protocol, functional protocol, and service-specific procedures. The mappings use messages such as FACILITY, REGISTER, HOLD, and RETRIEVE, so terminals and gateways need to support the relevant supplementary service signalling if those features are offered.

The document also separates Call Related Supplementary Services (CRSS) and CISS handling. In practice, this means a product claiming support for a listed supplementary service must map the related signalling consistently in both DECT and ISDN directions.

Information element and coding rules

Clause 5 gives detailed mappings for information elements such as calling party number, called party number, subaddress, display, progress indicator, cause, release reason, sending complete, signal, IWU-to-IWU information, and bearer capability. It also defines coding mappings for fields such as protocol discriminator, message type, transaction identifier, transfer mode, user protocol identifiers, and several rate and compatibility fields.

These rules matter because interworking fails if the same service data is represented differently on the two sides. For example, number and display strings are mapped character-for-character with the DECT character limits noted in the tables, while some whole messages are carried inside IWU-to-IWU elements without change.

Bearer capability and supported bearer services

Clause 6 tells the DECT Fixed System to inspect the BEARER-CAPABILITY information element to determine the requested bearer service. It then defines the DECT bearer that must be set up for each supported bearer service, so this clause is the link between the ISDN call request and the actual DECT radio resource allocation.

For speech and 3,1 kHz audio, the standard uses one full slot unprotected minimum delay, with the B-channel transcoded to ADPCM at 32 kbit/s. For unrestricted digital information 64 kbit/s, it uses one double slot unprotected. This is the part a designer uses when deciding radio capacity, speech transcoding, and service feasibility.

Additional DECT and data-bearer details

Annex A adds or modifies ETS 300 175 behaviour for the relevant DECT layers. Annex B defines LU7 64 kbit/s data bearer behaviour, including transmit and receive buffering, Automatic-Repeat-Request (ARQ), Forward Error Control (FEC), sequence variables, and exception handling.

That material matters for implementations that must carry transparent data rather than voice. Annex B is especially useful when a product must control retransmission timing and sequence handling correctly for the LU7 bearer.

What terms does SIST ETS 300 434-1:1999 define?

SIST ETS 300 434-1:1999 defines the terms and abbreviations needed to describe DECT/ISDN interworking clearly. These are the key ones a reader will use most often.

  • DECT Fixed System (DFS) - The fixed-side part of the DECT end system that performs the interworking and radio access functions.
  • DECT Portable System (DPS) - The portable-side part of the DECT end system that works with the DFS to provide ISDN-TE behaviour.
  • ISDN-TE - ISDN Terminal Equipment, the behaviour that the combined DECT end system is intended to emulate.
  • Interworking Unit (IWU) - The function where DECT and ISDN procedures, messages, and information elements are mapped to each other.
  • Call Control (CC) - The call signalling function used for setup, information transfer, and release.
  • C-plane - The control plane carrying signalling and control procedures rather than user payload.
  • U-plane - The user plane that carries the bearer traffic.
  • ISDN Access Profile (IAP) - The profile that defines how particular ISDN services are supported over DECT for interoperability at the air interface.

Who uses SIST ETS 300 434-1:1999?

SIST ETS 300 434-1:1999 is used by DECT terminal and base-station designers, interworking gateway developers, and telecom equipment manufacturers that need DECT/ISDN compatibility. It is also used by test engineers, conformity assessment teams, and quality managers checking whether a product correctly supports the listed ISDN bearer and supplementary services.

Buyers and system integrators use it when they need to compare DECT equipment for ISDN service support, especially where call setup, number presentation, supplementary services, or 64 kbit/s bearer behaviour matters. Network and service providers use it when planning equipment that has to interact consistently with ISDN services over DECT.

Which standards are used with SIST ETS 300 434-1:1999?

SIST ETS 300 434-1:1999 relies on DECT and ISDN companion standards for the underlying radio, signalling, and supplementary-service behaviour.

StandardWhat it contributes
ETS 300 175-1 to ETS 300 175-9DECT Common Interface, including physical, MAC, DLC, NWK, identities and addressing, security, speech coding, and Public Access Profile support
ISO/IEC 9646-1 and ISO/IEC 9646-3Conformance testing framework and tree/tabular notation used for structured specification and test work
ETS 300 402-2DSS1 data link layer for ISDN signalling
ETS 300 403-1DSS1 signalling network layer for circuit-mode basic call control
ETS 300 122-1Generic keypad protocol for supplementary services
ETS 300 196-1Generic functional protocol for supplementary services
ETS 300 195-1Supplementary service interactions
ETS 300 012 and ETS 300 011ISDN layer 1 specifications and test principles for basic and primary-rate interfaces

The normative list also names service-specific ISDN standards for bearer services and supplementary services such as CLIP, CLIR, COLP, COLR, HOLD, CUG, AOC, CONF, CCBS, ECT, DDI, FPH, UUS, and 7 kHz telephony or videotelephony services.

What does the SIST ETS 300 434-1:1999 document contain?

SIST ETS 300 434-1:1999 contains detailed message-mapping tables for DECT-to-ISDN and ISDN-to-DECT interworking, including mandatory, optional, conditional, and ignored elements. It also contains information element mapping tables and coding mapping tables, which show how protocol fields and service data are translated between the two systems.

The document includes procedures for call establishment, call information, call release, supplementary services, segmentation, identity mapping, and ISDN layer 2 management. It also covers DFS U-plane mappings for service activation and de-activation.

Annex B adds the LU7 data bearer architecture, transmit and receive buffering, ARQ/FEC behaviour, and error handling cases such as invalid frame conditions, sequence errors, format errors, and abnormal release. Annex C covers user identification cases, and Annex D provides IWU Call Control state transition material for implementation and verification work.

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Frequently Asked Questions

SIST ETS 300 434-1:1999 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital Enhanced Cordless Telecommunications (DECT); DECT/Integrated Services Digital Network (ISDN) interworking for end system configuration; Part 1: Interworking specification". This standard covers: To specify how ISDN services can be provided over a DECT link. This part describes the DECT end-system reference configuration which is used where the DECT Fixed-System (DFS) and DECT Portable System (DPS) form together an end-system with the behaviour of an ISDN-TE.

To specify how ISDN services can be provided over a DECT link. This part describes the DECT end-system reference configuration which is used where the DECT Fixed-System (DFS) and DECT Portable System (DPS) form together an end-system with the behaviour of an ISDN-TE.

SIST ETS 300 434-1:1999 is classified under the following ICS (International Classification for Standards) categories: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT); 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.

SIST ETS 300 434-1:1999 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-maj-1999
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH '(&7 'LJLWDOQRRPUHåMH]
LQWHJULUDQLPLVWRULWYDPL ,6'1 9]DMHPQRGHORYDQMHVLVWHPRY'(&7,6'1Y
NRQILJXUDFLMLNRQþQHJDVLVWHPDGHO6SHFLILNDFLMDY]DMHPQHJDGHORYDQMD
Digital Enhanced Cordless Telecommunications (DECT); DECT/Integrated Services
Digital Network (ISDN) interworking for end system configuration; Part 1: Interworking
specification
Ta slovenski standard je istoveten z: ETS 300 434-1 Edition 1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 434-1
TELECOMMUNICATION April 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-03014-1
ICS: 33.020, 33.060.50
DECT, ISDN
Key words:
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
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 - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
*
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.

Page 2
ETS 300 434-1: April 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.

Page 3
ETS 300 434-1: April 1996
Contents
Foreword .9
Introduction.9
1 Scope .11
2 Normative references.11
3 Definitions, symbols and abbreviations.16
3.1 DECT definitions.16
3.2 Symbols .18
3.3 DECT abbreviations and acronyms .18
3.4 ISDN abbreviations and acronyms .19
3.5 ISO 9646 abbreviations .19
4 Interworking requirements.20
4.1 Reference configurations and interface.20
4.1.1 End system reference configuration.20
4.1.2 Interfaces.20
4.1.2.1 ISDN interfaces .20
4.1.2.2 Interfaces supported for a DECT end system .20
4.2 Protocol architecture models .21
4.3 Service requirements.22
4.3.1 Bearer service requirements .22
4.3.2 Teleservice requirements.23
4.3.2.1 General.23
4.3.2.2 Relationship to other ISDN service categories .23
4.3.2.3 Relationship to ISDN bearer services and information
transfer capabilities.24
4.3.2.4 Relationship to signalling procedures.24
4.3.2.5 General aspects on error performance .25
4.3.3 Supplementary service requirements.26
4.3.3.1 General.26
4.3.3.2 Keypad protocol.27
4.3.3.3 Feature key management protocol.27
4.3.3.4 Functional protocol .28
4.3.3.4.1 Classification of the ISDN procedures
supporting the ISDN-SS.29
4.4 Interworking context.29
5 Interworking mappings .29
5.1 Symbols for map columns .30
5.2 DFS C-plane IWU mappings .30
5.2.1 Call Control (CC) IWU procedures.30
5.2.1.1 Call establishment procedures .30
5.2.1.1.1 Outgoing call.30
5.2.1.1.2 Incoming call.35
5.2.1.1.3 Fall-back procedures .37
5.2.1.2 Call information procedures.38
5.2.1.3 Call release procedures.38
5.2.1.3.1 Call release initiated by the DPS.38
5.2.1.3.2 Call release initiated by the NT .40
5.2.2 Supplementary services IWU procedures.41
5.2.2.1 Keypad protocol procedures for Call Related
Supplementary Services (CRSS) .41
5.2.2.1.1 DECT stimulus to/from ISDN stimulus.41

Page 4
ETS 300 434-1: April 1996
5.2.2.1.2 DECT stimulus to/from ISDN
functional protocol . 42
5.2.2.2 Keypad protocol procedures for CISS. 42
5.2.2.3 General functional protocol procedures for CRSS. 43
5.2.2.3.1 Common information element
approach - messages for outgoing call
control. 43
5.2.2.3.2 Common information element
approach - messages for incoming
call control . 44
5.2.2.3.3 Common information element
approach - active call messages. 44
5.2.2.3.4 Common information element
approach - call release messages . 44
5.2.2.3.5 Common information element
approach - additional CRSS
messages. 45
5.2.2.3.6 Common information element
approach - extended facility element . 45
5.2.2.3.7 Separate message approach. 45
5.2.2.3.8 Generic notification mapping
procedures - outgoing call messages . 46
5.2.2.3.9 Generic notification mapping
procedures - incoming call messages. 46
5.2.2.3.10 Generic notification mapping
procedures - active call messages. 46
5.2.2.3.11 Generic notification mapping
procedures - call release messages . 47
5.2.2.3.12 Generic notification mapping
procedures - additional CRSS
messages. 47
5.2.2.4 Functional protocol IWU procedures for CISS. 47
5.2.2.4.1 Connection-oriented. 47
5.2.2.4.2 Connectionless. 48
5.2.2.5 Specific procedures for the individual supplementary
services. 49
5.2.2.5.1 Specific procedures for Calling Line
Identification Presentation (CLIP) . 49
5.2.2.5.2 Specific procedures for Calling Line
Identification presentation Restriction
(CLIR). 50
5.2.2.5.3 Specific procedures for COnnected
Line identification Presentation
(COLP) . 50
5.2.2.5.4 Specific procedures for COnnected
Line identification presentation
Restriction (COLR). 50
5.2.2.5.5 Specific procedures for Multiple
Subscriber Number (MSN). 50
5.2.2.5.6 Specific procedures for Direct Dialling
In (DDI). 50
5.2.2.5.7 Specific procedures for
SUBaddressing (SUB) . 50
5.2.2.5.8 Specific procedures for Terminal
Portability (TP). 50
5.2.2.5.9 Specific procedures for Call Waiting
(CW). 51
5.2.2.5.10 Specific procedures for Call Hold
(HOLD). 51
5.2.2.5.11 Specific procedures for Closed User
Group (CUG). 51
5.2.2.5.12 Specific procedures for Advice Of
Charge (AOC-S,D,E). 51

Page 5
ETS 300 434-1: April 1996
5.2.2.5.13 Specific procedures for Malicious Call
Identification Detection (MCID).51
5.2.2.5.14 Specific procedures for add on
CONFerence (CONF).51
5.2.2.5.15 Specific procedures for 3 Party
(3PTY).51
5.2.2.5.16 Specific procedures for Call Deflection
(CD) .51
5.2.2.5.17 Specific procedures for User to User
Service 1 (UUS1).52
5.2.2.5.18 Specific procedures for User to User
Service 2 (UUS2).52
5.2.2.5.19 Specific procedures for User to User
Service 3 (UUS3).53
5.2.2.5.20 Specific procedures for Explicit Call
Transfer (ECT).53
5.2.2.5.21 Specific procedures for Call
Completion on Busy Subscribers
(CCBS).53
5.2.2.5.22 Specific procedures for Free Phone
(FPH) .53
5.2.2.5.23 Specific procedures for Meet Me
Conference (MMC) .53
5.2.2.5.24 Specific procedures for call
forwarding: (CFU), (CFNR), (CFB) .54
5.2.2.6 Error handling for supplementary services .54
5.2.2.6.1 Error handling procedures at the
DECT CI .54
5.2.2.6.2 IWU error handling procedures -
information from the NT.54
5.2.2.6.3 IWU error handling procedure -
information from the DPS .54
5.2.3 Other IWU procedures .55
5.2.3.1 Segmentation.55
5.2.3.2 Identity mapping procedures .55
5.2.4 Message mappings .55
5.2.4.1 Messages - ISDN to DECT.56
5.2.4.1.1 ALERTING - CC-ALERTING .57
5.2.4.1.2 CALL-PROC - CC-CALL-PROC.57
5.2.4.1.3 CISS-RELEASE - CISS-RELEASE-
COM.58
5.2.4.1.4 CISS-RELEASE-COM - CISS-
RELEASE-COM.58
5.2.4.1.5 CONGESTION-CONTROL - CC-INFO 58
5.2.4.1.6 CONNECT - CC-CONNECT .59
5.2.4.1.7 CONNECT-ACK - CC-CONNECT-
ACK.59
5.2.4.1.8 DISCONNECT - CC-RELEASE.60
5.2.4.1.9 FACILITYciss - FACILITYciss.60
5.2.4.1.10 FACILITYcrss - FACILITYcrss.60
5.2.4.1.11 HOLD-ACK - HOLD-ACK .61
5.2.4.1.12 HOLD-REJ - HOLD-REJ.61
5.2.4.1.13 INFORMATION - CC-INFO(F-02, F-
03, F-04, F-07, F-10) .61
5.2.4.1.14 INFORMATION - CC-SETUP.62
5.2.4.1.15 NOTIFY - CC-INFO .62
5.2.4.1.16 PROGRESS - CC-INFO .63
5.2.4.1.17 REGISTER - CISS-REGISTER .63
5.2.4.1.18 RELEASE - CC-RELEASE-COM.63
5.2.4.1.19 RELEASE-COM - CC-RELEASE-
COM.64
5.2.4.1.20 RETRIEVE-ACK - RETRIEVE-ACK .64
5.2.4.1.21 RETRIEVE-REJ - RETRIEVE-REJ.64

Page 6
ETS 300 434-1: April 1996
5.2.4.1.22 SETUP - CC-SETUP. 65
5.2.4.1.23 SETUP-ACK - CC-INFO . 66
5.2.4.1.24 SETUP-ACK - CC-SETUP-ACK . 66
5.2.4.1.25 USER-INFORMATION - CC-INFO . 66
5.2.4.1.26 STATUS - CC-INFO. 67
5.2.4.2 Messages - DECT to ISDN. 67
5.2.4.2.1 CC-ALERTING - ALERTING. 68
5.2.4.2.2 CC-CONNECT - CONNECT. 68
5.2.4.2.3 CC-INFO (F-02) - INFORMATION
(U2) . 69
5.2.4.2.4 CC-INFO (F-02) - SETUP . 70
5.2.4.2.5 CC-INFO (F-03, F-04, F-07, F-10,
F-19) - INFORMATION . 71
5.2.4.2.6 CC-INFO - FACILITY-crss . 71
5.2.4.2.7 CC-INFO - USER-INFORMATION . 72
5.2.4.2.8 CC-RELEASE - DISCONNECT . 72
5.2.4.2.9 CC-RELEASE-COM - RELEASE. 72
5.2.4.2.10 CC-RELEASE-COM - DISCONNECT. 73
5.2.4.2.11 CC-SETUP - SETUP. 73
5.2.4.2.12 CISS-REGISTER - REGISTER. 74
5.2.4.2.13 CISS-RELEASE-COM - CISS-
RELEASE. 75
5.2.4.2.14 FACILITYciss - FACILITYciss. 75
5.2.4.2.15 FACILITYcrss - FACILITYcrss . 75
5.2.4.2.16 HOLD - HOLD . 75
5.2.4.2.17 RETRIEVE - RETRIEVE . 76
5.2.5 Information element mappings . 76
5.2.5.1 ISDN to DECT and DECT to ISDN . 76
5.2.5.1.1 Basic-service - bearer-capability . 76
5.2.5.1.2 Calling-party-number - Calling-
party-number. 76
5.2.5.1.3 Called-party-number - Called-
party-number. 77
5.2.5.1.4 Called-party-subaddress - Called-
party-subaddress. 77
5.2.5.1.5 Display - Display. 77
5.2.5.1.6 End-to-end-compatibility - Bearer-
capability . 78
5.2.5.1.7 End-to-end-compatibility - Lower-
Layer-compatibility . 79
5.2.5.1.8 Facility - Facility. 79
5.2.5.1.9 IWU-attributes - Bearer-capability. 80
5.2.5.1.10 IWU-attributes - Lower-layer-
compatibility. 82
5.2.5.1.11 IWU-to-IWU - ISDN-
information-element . 82
5.2.5.1.12 IWU-to-IWU - ISDN-message. 83
5.2.5.1.13 Keypad - Called-party-number . 83
5.2.5.1.14 Keypad - Keypad. 83
5.2.5.1.15 Progress-indicator - Progress-
indicator. 84
5.2.5.1.16 Reject-reason - Cause . 84
5.2.5.1.17 Release-reason - Cause . 84
5.2.5.1.18 Sending-complete - Sending-complete 84
5.2.5.1.19 Signal . 85
5.2.6 Information element coding mappings. 85
5.2.6.1 coding-standard - coding-standard . 85
5.2.6.2 data bits coding - number of data bits. 85
5.2.6.3 duplex mode - duplex mode. 85
5.2.6.4 Flow control on reception - Flow control on reception. 86
5.2.6.5 Flow control on transmission - Flow control on
transmission. 86
5.2.6.6 id-for-info-element - info-element-id. 86

Page 7
ETS 300 434-1: April 1996
5.2.6.7 information-transfer-capability - information-transfer-
capability.86
5.2.6.8 information-transfer-rate - information-transfer-rate.87
5.2.6.9 intermediate rate - intermediate rate .87
5.2.6.10 location - location.88
5.2.6.11 length-of-contents - length-of-contents.88
5.2.6.12 L2-protocol-identifier - user-information-layer-2-protocol .88
5.2.6.13 L3-protocol-identifier - user-information-layer-3-protocol .89
5.2.6.14 message-type - message-type .89
5.2.6.15 modem type - modem type.89
5.2.6.16 negotiation - negotiation .89
5.2.6.17 Network Independent Clock (NIC) on reception - NIC on
reception.90
5.2.6.18 Network Independent Clock (NIC) on transmission - NIC
on transmission .90
5.2.6.19 number-type - type-of-number.90
5.2.6.20 numbering-plan - numbering-plan .90
5.2.6.21 odd/even - odd/even-indicator .91
5.2.6.22 parity - parity .91
5.2.6.23 presentation-indicator - presentation-indicator .91
5.2.6.24 progress-description - progress-description .92
5.2.6.25 protocol-discriminator - protocol-discriminator .92
5.2.6.26 protocol-identifier-coding - protocol-identifier-coding.92
5.2.6.27 reject-reason-code - cause-value.92
5.2.6.28 release-reason-code - cause-value.93
5.2.6.29 screening-indicator - screening-indicator.94
5.2.6.30 service-discriminator - service-discriminator .94
5.2.6.31 stop bits coding - number of stop bits.95
5.2.6.32 subaddress-type - type-of-subaddress .95
5.2.6.33 synchronous/asynchronous - synchronous/asynchronous.95
5.2.6.34 transaction-identifier - call-reference .95
5.2.6.35 transfer-mode - transfer-mode .96
5.2.6.36 user-protocol-identifier - user-information-layer-1-protocol .96
5.2.6.37 user rate - user rate .97
5.3 ISDN Layer 2 management .97
5.3.1 ISDN layer 2 management during a connection oriented transaction.97
5.3.2 ISDN layer 2 management during a connectionless transaction .100
5.4 DFS U-Plane IWU mappings.100
5.4.1 Service activation .100
5.4.2 Service de-activation .101
6 Support of ISDN bearer services .101
Annex A (normative): ETS 300 175 additions/modifications .102
A.1 MAC layer additions/modifications (part 3).102
A.2 DLC layer additions/modifications (part 4) .102
A.2.1 LU7 64 kbit/s data bearer service .102
A.3 NWL layer additions/modifications (part 5) .102
Annex B (normative): LU7 64 kbit/s data bearer service.104
B.1 General.104
B.2 PHL layer service .104
B.3 MAC layer service .104
B.4 DLC layer service .104
B.4.1 Architectural model .104
B.4.1.1 Transmit (Tx) frame buffering .104

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ETS 300 434-1: April 1996
B.4.1.2 Receive (Rx) frame buffering. 105
B.4.2 Automatic-Repeat-Request (ARQ) and Forward Error Control (FEC) . 105
B.4.2.1 Control field. 106
B.4.2.1.1 Format control parameter coding. 106
B.4.2.1.2 Offset variable V(O) . 107
B.4.2.1.3 Time variables V (T). 107
n
B.4.2.1.4 Offset number N(O) . 107
B.4.2.1.5 Send state variable V(S) . 107
B.4.2.1.6 Acknowledge state variable V(A) . 108
B.4.2.1.7 Send sequence number N(S) . 108
B.4.2.1.8 Receive state variable V(R) . 108
B.4.2.1.9 Receive sequence number N(R). 108
B.4.2.2 Information field . 108
B.4.2.3 ARQ checksum. 109
B.4.3 Procedures for normal operation. 109
B.4.3.1 Establishment and synchronisation procedures . 109
B.4.3.2 Active phase . 111
B.4.3.2.1 Transmitting frames (first time transmission). 111
B.4.3.2.2 Re-transmitting frames . 112
B.4.3.2.3 Receiving frames . 112
B.4.3.2.4 Sending acknowledgements . 113
B.4.3.2.5 Receiving acknowledgements . 113
B.4.3.3 Release. 113
B.4.4 Exceptional procedures. 113
B.4.4.1 Invalid frame condition. 113
B.4.4.2 Establishment . 113
B.4.4.3 Transmitting frames. 113
B.4.4.4 Receiving frames. 114
B.4.4.5 Sending acknowledgements. 114
B.4.4.6 Forwarding of received data . 114
B.4.4.7 N(R) sequence error. 114
B.4.4.8 N(O) sequence error. 114
B.4.4.9 N(S) sequence error . 115
B.4.4.10 Format error. 115
B.4.4.11 Abnormal release. 115
B.5 NWK layer service . 115
B.5.1 LCE service. 115
B.5.2 CC service. 115
Annex C (normative): ConnectionLess Supplementary Service (CLSS) procedure. 116
C.1 General. 116
C.2 Normal operation . 116
C.3 Exceptional procedures . 116
C.4 Identification of the user. 117
C.4.1 One-to-one relation between DECT and ISDN layer 2 point-to-point links . 117
C.4.2 No one-to-one relation between a DECT and an ISDN point-to-point links . 117
C.4.3 FACILITY message broadcast by the network. 117
Annex D (informative): Interworking state machine. 118
D.1 IWU CC state transition diagram. 118
D.2 IWU CC states. 118
D.3 IWU CC transition procedures. 118
History. 120

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ETS 300 434-1: April 1996
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).
Details of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI) may be
found in ETS 300 175 Parts 1 to 9 [1] - [9].
Further details of the DECT system may be found in ETR 015 [52], ETR 043 [51], and ETR 056 [53].
This ETS consists of two parts as follows:
Part 1: Interworking specification;
Part 2: Access profile.
The annexes A, B, and C are normative, and annex D is informative, to this ETS.
Transposition dates
Date of adoption of this ETS: 15 March 1996
Date of latest announcement of this ETS (doa): 31 July 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 January 1997
Date of withdrawal of any conflicting National Standard (dow): 31 January 1997
Introduction
This ETS specifies how Integrated Services Digital Network (ISDN) services are provided over the DECT
air interface.
One of the main objectives is to describe how the ISDN services are mapped across the DECT air
interface in a formal way, so that inter-operability of different manufacturers' equipment can be achieved.
This is achieved by describing the Interworking Unit (IWU) procedures and mappings loosely following
ITU-T Recommendations Q.601 to Q.699 [68] and by describing air interface protocols.
Part 1 of this ETS is made up of 3 main clauses:
- clause 4: Interworking requirements which includes the reference configurations and the protocol
architecture model and a description of the main service requirements;
- clause 5: IWU mappings which shows the C-plane and U-plane mappings. The signalling mappings
are first 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 "piped";
- clause 6: Support of ISDN bearer services which identifies the main DECT connection types
(U-plane + C-plane) at the air interface supporting optimized groups of services, from the IWU
mappings.
Part 2 of this ETS contains the ISDN Access Profile (IAP) for the end system and describes the air
interface protocol in detail. It will enable the subsequent generation of Protocol Implementation
Conformance Statements (PICS) and test cases.

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ETS 300 434-1: April 1996
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ETS 300 434-1: April 1996
1 Scope
This European Telecommunication Standard (ETS) specifies how Integrated Services Digital Network
(ISDN) services may be provided over Digital Enhanced Cordless Telecommunications (DECT)
endsystem configurations. Apparatus claiming interoperability based upon the ISDN Access Profile (IAP)
shall fully comply with the process mandatory technical requirements and those for optional features so far
such are provided. Both public ISDN and private ISDN are within the scope of this ETS.
An IAP is specified, defining how particular ISDN services are supported, so that inter-operability of DECT
equipment can be achieved at the air interface for these services. Apparatus claiming the provision of any
service feature listed in this ETS should comply with the corresponding process mandatory technical
requirements.
The following ISDN bearer services are covered:
- speech;
- 3,1 kHz audio; and
- unrestricted digital information 64 kbit/s.
Applications using these bearer services are outside the scope of this ETS. However, such applications
envisaged include 3,1 kHz telephony, 7 kHz telephony, group 4 fax, teletex, videotex, and voice-band data
transmission such as group 3 fax and modem data transmission.
The bearer service "packet mode" is outside the scope of this ETS.
The support of ISDN supplementary services is considered.
The DECT end system reference configuration is used where the DECT Fixed System (DFS) and DECT
Portable System (DPS) together form an end system with the behaviour of an ISDN Terminal Equipment
(ISDN-TE).
Mobility Management (MM) such as location registration, and subscription registration is outside the scope
of this ETS.
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 (CI); Part 1:
Overview".
[2] ETS 300 175-2: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 2: Physical
Layer".
[3] ETS 300 175-3: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 3: Medium
Access Control (MAC) layer".
[4] ETS 300 175-4: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data
Link Control (DLC) layer".
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ETS 300 434-1: April 1996
[5] ETS 300 175-5: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network
(NWK) layer".
[6] ETS 300 175-6: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 6:
Identities and addressing".
[7] ETS 300 175-7: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 7: Security
features".
[8] ETS 300 175-8: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 8: Speech
coding and transmission".
[9] ETS 300 175-9: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Common Interface (CI); Part 9: Public
Access Profile (PAP)".
[10] ISO/IEC 9646-1 (1991): "Information technology - Open Systems
Interconnection - Conformance testing methodology and framework - Part 1:
General concepts". (See also ITU-T Recommendation X.290 (1991)).
[11] ISO/IEC 9646-3 (1991): "Information technology - Open Systems
Interconnection - Conformance testing methodology and framework - Part 3:
The tree and tabular combined notation". (See also ITU-T Recommendation
X.292 (1992)).
[12] ETS 300 052-1: "Integrated Services Digital Network (ISDN); Multiple
Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling
System No. one (DSS1) protocol; Part 1: Protocol specification".
[13] ETS 300 058-1: "Integrated Services Digital Network (ISDN); Call Waiting (CW)
supplementary service; Digital subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[14] ETS 300 061-1: "Integrated Services Digital Network (ISDN); Subaddressing
(SUB) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[15] ETS 300 092-1: "Integrated Services Digital Network (ISDN); Calling Line
Identification Presentation (CLIP) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[16] ETS 300 093-1: "Integrated Services Digital Network (ISDN); Calling Line
Identification Restriction (CLIR) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[17] ETS 300 097-1: "Integrated Services Digital Network (ISDN); Connected Line
Identification Presentation (COLP) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[18] ETS 300 098-1: "Integrated Services Digital Network (ISDN); Connected Line
Identification Restriction (COLR) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[19] ETS 300 130-1: "Integrated Services Digital Network (ISDN); Malicious Call
Identification (MCID) supplementary service; Digital Subscriber Signalling
System No. one (DSS1) protocol; Part 1: Protocol specification".

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ETS 300 434-1: April 1996
[20] ETS 300 138-1: "Integrated Services Digital Network (ISDN); Closed User
Group (CUG) supplementary service; Digital Subscriber Signalling System No.
one (DSS1) protocol; Part 1: Protocol specification".
[21] ETS 300 141-1: "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[22] ETS 300 182-1: "Integrated Services Digital Network (ISDN); Advice of Charge
(AOC) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[23] ETS 300 185-1: "Integrated Services Digital Network (ISDN); Conference Call
add-on (CONF) supplementary service; Digital Subscriber Signalling System No.
one (DSS1) protocol; Part 1: Protocol specification".
[24] ETS 300 080: "Integrated Services Digital Network (ISDN); ISDN lower layer
protocols for telematic terminals".
[25] ETS 300 081: "Integrated Services Digital Network (ISDN); Teletex end-to-end
protocol over ISDN".
[26] ETS 300 108: "Integrated Services Digital Network (ISDN); Circuit-mode
64 kbit/s unrestricted 8 kHz structured bearer service category; Service
description".
[27] ETS 300 109: "Integrated Services Digital Network (ISDN); Circuit-mode
64 kbit/s 8 kHz structured bearer service category usable for speech information
transfer; Service description".
[28] ETS 300 110: "Integrated Services Digital Network (ISDN); Circuit-mode
64 kbit/s 8 kHz structured bearer service category usable for 3,1 kHz audio
information transfer; Service description".
[29] ETS 300 111: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz
teleservice; Service description".
[30] ETS 300 112: "Integrated Services Digital Network (ISDN); Facsimile group 4
class 1 equipment on the ISDN End-to-end protocols".
[31] ETS 300 120: "Integrated Services Digital Network (ISDN); Service
requirements for telefax group 4".
[32] ETS 300 171: "Private Telecommunication Network (PTN); Specification,
functional models and information flows; Control aspects of circuit mode basic
services".
[33] ETS 300 262: "Integrated Services Digital Network (ISDN); Syntax based
Videotex teleservice; Service description".
[34] ETS 300 263: "Integrated Services Digital Network (ISDN); Telephony 7 kHz
teleservice; Service description".
[35] ETS 300 264: "Integrated Services Digital Network (ISDN); Videotelephony
teleservice; Service description".
[36] ETS 300 475-1: "Private Telecommunication Network (PTN); Reference
configuration; Part 1: Reference configuration for PTN eXchanges
(PTNXs) [ISO/IEC 11579-1 (1994), modified]".
[37] ETS 300 012: "Integrated Services Digital Network (ISDN); Basic user-network
interface; Layer 1 specification and test principles".

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ETS 300 434-1: April 1996
[38] ETS 300 402-2: "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) protocol; Data link layer; Part 2: General
protocol specification [ITU-T Recommendation Q.921 (1993), modified]".
[39] 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]".
[40] ETS 300 192: "Private Telecommunications Network (PTN); Signalling protocol
at the S-reference point; Circuit mode basic services".
[41] ETS 300 122-1: "Integrated Services Digital Network (ISDN); Generic keypad
protocol for the support of supplementary services; Digital Subscriber Signalling
System No. one (DSS1) protocol; Part 1: Protocol specification".
[42] ETS 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional
protocol for the support of supplementary services; Digital Subscriber Signalling
System No. one (DSS1) protocol; Part 1: Protocol specification".
[43] ETS 300 188-1: "Integrated Services Digital Network (ISDN); Three Party
(3PTY) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[44] ETS 300 207-1: "Integrated Services Digital Network (ISDN); Diversion
supplementary services; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[45] ETS 300 210-1: "Integrated Services Digital Network (ISDN); Freephone (FPH)
supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[46] ETS 300 286-1: "Integrated Services Digital Network (ISDN); User-to-User
Signalling (UUS) supplementary service; Digital Subscriber Signalling System
No. one (DSS1) protocol; Part 1: Protocol specification".
[47] ETS 300 359-1: "Integrated Services Digital Network (ISDN); Completion of
Calls to Busy Subscriber (CCBS) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[48] ETS 300 369-1: "Integrated Services Digital Network (ISDN); Explicit Call
Transfer (ECT) supplementary service; Digital Subscriber Signalling System No.
one (DSS1) protocol; Part 1: Protocol specification".
[49] ETS 300 064-1: "Integrated Services Digital Network (ISDN); Direct Dialling In
(DDI) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[50] ETS 300 267-1: "Integrated Services Digital Network (ISDN); Telephony 7 kHz
and videotelephony teleservices; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[51] ETR 043: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT) Common Interface Services and Facilities
requirements specification".
[52] ETR 015: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT); Reference document".
[53] ETR 056: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT); System description document".

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ETS 300 434-1: April 1996
[54] ITU-T Recommendation G.821: "Error performance of an international digital
connection forming part of an integrated services digital network".
[55] ITU-T Recommendation I.231.2: "64 kbit/s, 8 kHz structured, usable for speech
information transfer".
[56] ITU-T Recommendation I.241.2: "Teletex".
[57] ITU-T Recommendation I.241.3: "Telefax 4".
[58] ITU-T Recommendation I.241.5: "Videotex".
[59] ITU-T Recommendation I.241.6: "Telex".
[60] ITU-T Recommendation I.411: "ISDN user-network interfaces - Reference
configurations".
[61] ECMA TR/44: "An Architectural Framework for Private Networks, 2nd Editio
...