Working paper wg i/Meeting 3/wp 306 aeronautical communications panel (acp)



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International Civil Aviation Organization


WORKING PAPER

WG I/Meeting 3/WP 306










AERONAUTICAL COMMUNICATIONS PANEL (ACP)

3rd MEETING OF WORKING GROUP I


Aarhus, Denmark 6-12 August 2007


Agenda Item : 4

Guidance Material



ATN IPS Manual on Implementation
(Presented by Kelly Kitchens)


SUMMARY

This working paper reorganizes the guidance document to align with the Technical Manual and adds VoIP material

TABLE OF CONTENTS



Introduction 6

Background 6

Reference Documents 6

Abbreviations and Definitions 6

ATN Deployment Guidance 7

1.1 Network Layer Guidance 7

Network Layer Addressing 7

1.1.1 Basic IPV6 Address Space Assignments and BGP as Numbers 8

Transit Traffic 10

1.1.2 ATN/IPS QoS 11

1.1.3 QoS Management 12

Transport layer Guidance 15

1.1.4 General 15

1.1.5 Connection oriented and connectionless transmission 15

Transport layer addressing 16

Congestion Avoidance 16

Error Detection and Recovery 16

Application Layer Guidance 17

Application interface to the transport layer 17

Application interface to the network layer 17

IPS Security Guidance Material 17

IPsec Authentication Header and Encapsulating Security Payload 17

Authentication Header 18

Encapsulating Security Payload 19

IPsec Transport and Tunnel Modes 20

IPsec Key Management 20

Alternatives to IPv6 Security 21

1.1.6 Alternatives/Compliments to IPsec 23

1.1.7 Need for Security at Multiple Levels in Aviation Environment 23

2 VoIP Guidance 23

Annex 1 Example Implementation Guide 24

Scope of this document 24

Differences to previous edition 24

Use of the Document 24

General context 25

Organisation of the Document 25

Symbols Used 26

Link to the ATM 2000+ Strategy 27

Reference Documents 27

Communication Protocols Requirements 29

2.1 Introduction 29

IP Version 29

Data Link Layer 29

Ethernet Frame Format 30

IPv4 Addressing 31

IPv6 Addressing 32

Network Layer 33

Internet Protocol version 4 33

Internet Protocol version 6 36

ICMP 39


Transport layer 40

4.5.1 Addressing 40

UDP checksum 40

Limitation of maximum size of messages 41

SPECIFIC CONFIGURATION REQUIREMENTS 41

Surveillance Data Transmitter 41

Common (IPv4 and IPv6) configuration requirements 41

IP version 4 specific configuration requirements 41

P version 6 specific configuration requirements 42

Surveillance Data Receiver 43

Common (IPv4 and IPv6) configuration requirements 43

IP version 4 specific configuration requirement 44

IP version 6 specific configuration requirements 44

System Configuration Examples 44

Single Attached Multicast Receiver with one Incoming Flow per Interface 44

Multi-homed Multicast Receiver with one Incoming Flow per Interface 45

Receivers with Multiple Incoming Flows per Received Interface and Multihomed Transmitters 46

Multi-homed Transmitters and multiple transmissions of the same flow 47

Abbreviation List 57

Multicast Service 59

Planned European Deployments 59

Annex 2 61

Implementation of Voice over Internet Protocol (VoIP) Handbook 61

65


1.0 Introduction 65

1.1 Purpose 65

1.2 Scope 65

2.0 VoIP Overview 66

2.1 VoIP Implementation 67

2.1.1 Application Layer 69

2.1.2 Transport Layer 69

2.1.3 Network Layer 70

2.1.4 Link Layer 73

2.1.5 Physical Layer 73

2.1.6 Echo cancellation 73

2.1.7 Telephone Naming and Addressing 73

2.1.8 Quality Measurement 73

2.2 Quality of Services 73

2.3 Gateway 74

2.4 Gatekeeper 74

3.0 VoIP Architecture Characteristics 74

3.1 Assumptions 74

3.2 Voice over IP Components 74

3.3 Performance Parameters for VoIP Applications 74

3.4 Availability 75

3.5 Delay 75

Appendix A - Real-Time Multimedia Protocols 76

Appendix B - CODECs for VoIP technology 78

Appendix C - Multimedia Protocols: H.323 and SIP 83

Appendix D - Compression of IPv4 and IPv6 91

Appendix E - VoIP Security 97

Appendix F- Numbering and Addressing 107

3 Transition Mechanisms 114

Appendix G - VoIP Components 116

Appendix H - Bandwidth and Performance 119

Appendix I - QoS Criteria 126

Appendix K - Gateway/Gatekeeper 131

4 References 132

Lexicon 139


1FOREWORD
The material contained in this document supplements Standards and Recommended Practices (SARPs). This document is to be used to assist in the deployment of IPS systems for the ICAO Aeronautical Telecommunication Network (ATN) as defined in Annex 10 — Aeronautical Telecommunications, Volume III — Communication Systems and Part I — Digital Data Communication Systems. The purpose of this document is to support the deployment of ATN network components in ICAO Regions.

This document consists of nine Sub-Chapters


Section 1 — Introduction

Section 2 — Reference Documents

Section 3 — Abbreviations and Definitions

Section 4 — ATN Deployment Guidance

Section 5 — VoIP Guidance

Annex 1 — Example Implementation Guide

Annex 2 — Implementation of Voice over Internet Protocol Handbook

In line with the agreement by the ANC that the document should be updated on a as needed basis.






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