SIST ETS 300 326-3:1999

SLOVENSKI STANDARD
SIST ETS 300 326-3:1999
01-julij-1999
Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) -
Prizemni letalski telefonski sistem (TFTS) - 3. del: Govorne storitve, omrežni vidiki
ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Terrestrial Flight
Telecommunications System (TFTS); Part 3: Speech services, network aspects
Ta slovenski standard je istoveten z: ETS 300 326-3 Edition 2
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
49.090 2SUHPDLQLQVWUXPHQWLY On-board equipment and
]UDþQLKLQYHVROMVNLKSORYLOLK instruments
SIST ETS 300 326-3:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 326-3:1999

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SIST ETS 300 326-3:1999
EUROPEAN ETS 300 326-3
TELECOMMUNICATION August 1998
STANDARD Second Edition
Source: ERM Reference: RE/ERM-RP05-005-3
ICS: 33.020
Key words: TFTS, network
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Terrestrial Flight Telecommunications System (TFTS);
Part 3: Speech services, network aspects
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Internet: secretariat@etsi.fr -
http://www.etsi.fr - http://www.etsi.org
Tel.: +33 4 92 94 42 00 - Fax: +33 4 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 1998. All rights reserved.

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ETS 300 326-3: August 1998
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 Standards Making Support Dept." at the address shown on the title page.

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Contents
Foreword .9
1 Scope . 11
2 Normative references . 11
3 Definitions and abbreviations. 12
3.1 Definitions. 12
3.2 Abbreviations. 12
4 TFTS network architecture. 14
4.1 General. 14
4.2 The functional entities of the TFTS. 14
4.2.1 The Ground Station System (GSS). 14
4.2.2 The GSC. 14
4.2.3 The GS . 14
4.2.4 The Interworking Function (IWF). 14
4.2.5 The AS. 15
4.3 Configuration of the TFTS network . 15
4.3.1 General. 15
4.3.2 Description of the TFTS configuration . 16
4.4 TFTS network interfaces . 17
4.4.1 General. 17
4.4.2 Interface between the GSC and GSs (Ub) . 17
4.4.3 Interface between AS and GS system (Ua). 17
4.5 Interfaces with the fixed networks . 17
4.5.1 Interface between the GSC and the fixed networks. 17
4.5.2 Scope of TFTS specification . 17
4.6 Interfaces between AC, OMC and NMC, and the fixed networks . 18
4.7 Network connection types. 18
4.7.1 Introduction. 18
4.7.2 General considerations. 18
4.7.2.1 Relationship between lower layer capabilities and radio
traffic channels. 18
4.7.2.2 Lower layer capabilities. 18
4.7.3 Framework for the description of connection types . 19
4.7.3.1 Introduction. 19
4.7.3.2 Purpose of TFTS connection types . 19
4.7.3.3 Functions associated with TFTS connection. 20
4.7.3.4 Applications of TFTS connection types. 20
4.7.4 TFTS connection types. 21
4.7.4.1 Description of TFTS connection types . 21
4.7.4.2 TFTS connection elements . 21
4.7.4.3 Rules of association for the attribute values of connection
elements and connection types. 21
4.7.4.3.1 Information transfer mode. 21
4.7.4.3.2 Information transfer rate (kbits/s) . 21
4.7.4.3.3 Information transfer susceptance. 22
4.7.4.3.4 Establishment of connection. 22
4.7.4.3.5 Symmetry. 22
4.7.4.3.6 Connection configuration. 22
4.7.4.3.7 Structure . 22
4.7.4.3.8 Channels . 22
4.7.4.3.9 Connection control protocol. 23

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4.7.4.3.10 Information transfer coding/protocol.23
4.7.4.3.11 Further attributes and attribute values .24
4.7.4.4 Limited set of TFTS connection types.25
4.7.5 Relationship between bearer and connection types .25
4.7.6 List of definitions of TFTS connection type attributes and their values.26
4.7.6.1 Attribute definition and their values .26
4.7.6.2 Definition of values.27
5 Fixed network interworking.27
5.1 Interworking requirements.27
5.1.1 Interworking definition.27
5.1.2 Interworking between networks.27
5.1.2.1 Network interworking .27
5.1.2.2 Service interworking.28
5.2 Network interworking traffic part.28
5.2.1 General .28
5.2.2 Definitions.28
5.2.3 Traffic part introduction.29
5.2.4 Network characteristics.29
5.2.4.1 Key characteristics of networks concerned.29
5.2.4.2 Characteristics of PSTNs .29
5.2.4.3 Interworking classification.30
5.2.4.3.1 Network interworking.30
5.2.4.3.2 Signalling interworking.30
5.2.4.3.3 Numbering .30
5.2.5 Interworking to the PSTN/ISDN .30
5.2.5.1 Interworking indications to TFTS terminals.30
5.2.5.2 Transmission aspects.31
5.3 Interworking to the ISDN.31
6 Call handling and handover procedures .31
6.1 General.31
6.2 Handover criteria and resource allocation management .31
6.2.1 General .31
6.2.2 General handover decisions .31
6.2.2.1 AS need for handover .31
6.2.2.2 GS need for handover.32
6.2.2.3 Handover decision point priority.32
6.2.3 Handover strategy to be applied at AS.32
6.2.4 Handover strategy to be applied at AS for cell boundary selection.32
6.2.5 Alternative handover strategy to be applied at AS for cell boundary
selection.33
6.2.6 Conflict in signalling requirements.33
6.2.7 Resource management strategy to be applied at the GS.33
6.2.7.1 General requirements on GS resource management.33
6.2.8 Handover failure actions due to lack of resources.34
6.2.8.1 Handover failure action at the GS side due to lack of
resources.34
6.2.8.2 AS action on handover failure due to resource shortage.35
6.2.8.2.1 Handover initiated due to poor link
quality.35
6.2.8.2.2 Handover initiated due to cell boundary 35
6.2.8.2.3 Handover initiated due to physical
condition.35
6.2.9 General handover and cell selection issues.35
6.3 Call handling and handover management procedures .35
6.3.1 General .35
6.3.2 Call handling procedures.36
6.3.2.1 General aspects.36
6.3.2.2 Functional aspects for call handling .36

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6.3.2.2.1 AS functional entities . 37
6.3.2.2.2 GS functional entities. 38
6.3.2.2.3 GSC functional entities. 38
6.3.2.3 Call handling phases . 39
6.3.2.3.1 Resource set-up phase. 39
6.3.2.3.2 Call set-up phase . 40
6.3.2.3.3 Conversation phase. 40
6.3.2.3.4 Call release phase. 40
6.3.2.3.5 Resource Release phase. 41
6.3.3 Handover procedures . 41
6.3.3.1 Handover decision . 41
6.3.3.1.1 Reasons for handover. 41
6.3.3.1.2 Strategy for handover. 42
6.3.3.2 Handover management . 42
6.3.3.2.1 Resource management. 42
6.3.3.2.2 Handover phase organization. 42
6.3.3.2.3 Failure procedures . 43
6.3.3.3 Functional composition of TFTS stations. 43
6.3.3.3.1 AS functional composition for handover 45
6.3.3.3.2 GS functional composition for
handover . 45
6.3.3.3.3 GSC functional composition for
handover . 48
6.3.3.4 Handover general description. 56
6.3.3.4.1 Handover between channels of the GS. 56
6.3.3.4.2 Handover between GSs of different
GSC. 61
6.4 Network interworking handover part. 64
6.4.1 General. 64
6.4.2 TFTS/PSPDN interworking requirements. 64
6.4.3 TFTS/ISDN interworking requirements . 65
6.4.4 TFTS/PSTN interworking requirements . 65
6.5 Handover part specification. 65
6.5.1 Introduction. 65
6.5.2 Interface presentation. 65
6.5.2.1 General . 65
6.5.2.2 Objectives. 67
6.5.2.3 General characteristics . 67
6.5.2.3.1 Technique of description . 67
6.5.2.3.2 Primitives. 67
6.5.2.3.3 Peer-to-peer communication . 67
6.5.3 Structure of signalling functions. 68
6.5.3.1 Basic groups of functions . 68
6.5.3.2 Protocol architecture. 68
6.5.4 Services provided by handover signalling layer. 69
6.5.4.1 CC services . 69
6.5.4.2 MRM services . 69
6.5.4.3 HRM services. 70
6.5.5 Services assumed from network layer. 70
6.5.5.1 General . 70
6.5.5.2 Service primitives. 70
6.5.6 Inter-layer service interfaces. 71
6.5.6.1 Services provided by HRM entity . 71
6.5.6.1.1 General. 71
6.5.6.1.2 Service primitives . 71
6.5.7 Functions to be provided by the handover layer entities. 73
6.5.7.1 Functions provided by the HRM entity. 73
6.5.7.2 Functions provided by the CCM entity . 73
6.5.7.3 Function provided by the RF. 73
6.5.7.4 Functions provided by the Distribution Function (DF). 73

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6.5.7.5 Functions provided by the MRM entity.73
6.5.8 Elementary procedures for HRM.74
6.5.8.1 General.74
6.5.8.2 Inter GSC Connection .74
6.5.8.3 HRM.74
6.5.8.4 Handover processing.74
6.5.8.4.1 Outgoing handover procedure.74
6.5.8.4.2 Incoming handover procedure.75
6.5.8.5 Handover information transmission .76
6.5.8.6 TCH release.76
6.5.8.7 Data message transmission.76
6.5.9 Message functional definition and contents .77
6.5.9.1 Messages for HRM.77
6.5.9.2 Handover resource messages.77
6.5.9.2.1 TCH release.78
6.5.9.2.2 Release Confirm.78
6.5.9.3 Handover messages between GSCs.78
6.5.9.3.1 HO-Request.78
6.5.9.3.2 HO-Confirm.79
6.5.9.3.3 HO-COMMAND.79
6.5.9.3.4 HO-Complete.80
6.5.9.3.5 HO-Reject.80
6.5.9.3.6 HO-Failure.80
6.5.9.3.7 HO-Information.81
6.5.9.4 Miscellaneous messages.81
6.5.9.4.1 Connect.81
6.5.9.4.2 Disconnect.81
6.5.9.4.3 CCM message transfer.82
6.5.9.4.4 MRM message transfer .82
6.5.9.5 Messages for MRM .82
6.5.10 Message format and information element coding.82
6.5.10.1 Overview.82
6.5.10.2 Message type .83
6.5.10.3 Other information elements.84
6.5.10.3.1 HRM information elements .88
6.5.10.3.2 Handover procedure reference .88
6.5.10.3.3 GS Identifier .89
6.5.10.3.4 ATEI.89
6.5.10.3.5 Handover resource identifier.90
6.5.10.3.6 Handover resource description .90
6.5.10.3.7 Handover call numbers information
element .91
6.5.10.3.8 Handover resource identifier list.92
6.5.10.3.9 Handover characteristics.93
6.5.10.3.10 Allocated frequency.93
6.5.10.3.11 Allocated slots.94
6.5.10.3.12 HRM Cause .94
6.5.10.3.13 CCM data message.95
6.5.10.3.14 MRM data message .96
6.5.10.3.15 Call Data Description.96
6.5.10.3.16 Service Provider Ident.98
6.5.11 Handling of error conditions.98
6.5.11.1 Transport disconnect.98
6.5.11.2 Release resource already released.98
6.5.11.3 Unknown handover resource identifier.98
6.5.11.4 Unknown handover reference.98
6.5.12 Handover diagrams.99
6.5.12.1 Handover scenario diagrams.99
6.5.12.1.1 Normal case.99
6.5.12.1.2 Reject by Old-GSC.99

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6.5.12.1.3 Reject by New-GSC . 100
6.5.12.1.4 Reject by the New-GS. 100
6.5.12.1.5 Reject by the New-GSC after HO-
CONFIRM . 100
6.5.12.1.6 Failure by the AS. 101
6.5.12.2 State diagram and System Description Language (SDL)
of HRM. 101
6.6 GSC - GSC isolation and restoration . 111
6.6.1 General. 111
6.6.2 Isolation. 111
6.6.3 Handover resource states. 111
6.6.3.1 Handover resource dynamic states . 111
6.6.3.2 Handover resource usage states. 112
6.6.4 Restart procedure. 112
6.6.4.1 General restart procedure. 112
6.6.4.2 Handover resource dynamic state diagram . 113
6.6.5 Handover Resource Maintenance . 113
6.6.5.1 Handover resource usage state modification procedure . 113
6.6.5.2 Handover resource usage state diagram . 114
6.6.6 Messages functional definition and contents . 114
6.6.6.1 Restart message. 114
6.6.6.2 Restart acknowledge message. 115
6.6.6.3 Service message. 115
6.6.6.4 Service acknowledge message. 115
6.6.7 Message format and information element coding . 116
6.6.7.1 General message format. 116
6.6.7.2 Message type . 116
6.6.7.3 Other information elements. 117
6.6.7.4 MRM transaction reference. 117
6.6.7.5 Handover resource identity and state . 117
History. 119

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Foreword
This second edition European Telecommunication Standard (ETS) has been produced by the
Electromagnetic compatibility and Radio spectrum Matters (ERM) Technical Committee of the European
Telecommunications Standards Institute (ETSI).
This ETS has been split into three parts as follows:
Part 1: "Speech services, facilities and requirements";
Part 2: "Speech services, radio interface";
Part 3: "Speech services, network aspects".
Transposition dates
Date of adoption of this ETS: 24 July 1998
Date of latest announcement of this ETS (doa): 31 October 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 April 1999
Date of withdrawal of any conflicting National Standard (dow): 30 April 1999

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1 Scope
This European Telecommunication Standard (ETS) covers the specification of equipment for provision of a
terrestrial Aeronautical Public Correspondence (APC) service working in the frequency spectrum bands
allocated at World Administrative Radio Conference (WARC) 92 (1 670 to 1 675 MHz and 1 800 to
1 805 MHz). The ETS fully specifies aspects of the radio interface and Terrestrial Flight
Telecommunication System (TFTS) Ground Network (GN) required to maintain interoperability of
equipment. Within Europe European Radiocommunications Committee (ERC) Decision
ERC/DEC (92)01 [13] is applicable to TFTS frequency spectrum.
The general architecture of the TFTS is considered in ETS 300 326-1 [1]. This part expands on that
explanation to consider aspects of fixed network interworking. This part does not specify any specific
signalling system for that purpose. It only specifies the functionality required for correct operation of the
system.
Call handling and decision processes are specified. These should be used in conjunction with
ETS 300 326-2 [2]. These explanations include the decision processes for the handover function.
Signalling requirement between Ground Switching Centres (GSCs) are specified for supporting inter-GSC
handovers.
The TFTS Aircraft Station (AS) was specified by the European Airlines Electronics Committee (EAEC) and
has subsequently been adopted as (ARINC) Characteristic 752 [14] by the Airlines Electrical Engineering
Committee (AEEC). ARINC Characteristic 752 [14] makes reference to this ETS for specification of certain
radio and telecommunication matters to avoid ambiguity. The TFTS AS is one of a set of facilities within an
overall architecture being defined for aircraft on board telecommunications by the AEEC.
An Interim European Telecommunications Standard (I-ETS) is being produced which covers aspects of
conformance testing for TFTS aircraft mobile stations. The specification of data application and facsimile
will be the subject of a further (I-)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 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 applies.
[1] ETS 300 326-1: "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Terrestrial Flight Telecommunication System (TFTS); Part 1: Speech
services, facilities and requirements".
[2] ETS 300 326-2: "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Terrestrial Flight Telecommunication System (TFTS); Part 2: Speech
services, radio interface".
[3] CCITT I-Series of Recommendations (I.500 - I.605).
[4] CCITT Recommendation E.164 (1997): "The international public
telecommunication numbering plan".
[5] CCITT Recommendation E.163: "Numbering plan for the international telephone
service".
[6] CCITT Recommendation I.112: "Vocabulary of terms for ISDNs".
[7] CCITT Recommendation I.310: "ISDN-Network functional principles".

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[8] CCITT Recommendation X.25: "Interface between Data Terminal Equipment
(DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in
the packet mode and connected to public data networks by dedicated circuit".
[9] CCITT Recommendation X.1: "International user classes of service in, and
categories of access to, public data networks and Integrated Services Digital
Networks (ISDNs)".
[10] CCITT Recommendation X.121: "International numbering plan for public data
networks".
[11] CCITT Recommendation X.200 (1988): "Reference model of open system
interconnection for CCITT applications".
[12] CCITT Recommendation X.210 (11/93): "Open systems interconnection layer
service definition".
[13] ERC Decision ERC/DEC (92)01: "Decision on the frequency bands to be
designated for the coordinated introduction of
...