Agenda Item 5 : Shortcomings and deficiencies in the Air Navigation field in the AFI Region. (Information Paper presented by ASECNA, NAMA and GCAA)

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1 APIRG /13- IP/31 INTERNATIONAL CIVIL AVIATION ORGANISATION AFI PLANNING AND IMPLEMENTATION REGIONAL GROUP THIRTEENTH MEETING (APIRG/13) (Sal, Cape Verde, June 2001) Agenda Item 5 : Shortcomings and deficiencies in the Air Navigation field in the AFI Region African and Indian Ocean Satellite Network(AFISNET) presentation (Information Paper presented by ASECNA, NAMA and GCAA) SUMMARY This Information Paper makes a presentation of the satellite network in Central and Western Africa (SATCOM network) and informs the International Aeronautical Community of its new designation. I - INTRODUCTION: During the ninth meeting in Accra of the Satellite Network Management Committee(SNMC), the Members, noting the current deployment of the network, agreed to name the SATCOM network (in the beginning AEROSATEL): AFISNET(African and Indian Ocean Satellite Network) network initiated by ICAO and dedicated to Civil Aviation suitable and available support for the elimination of the shortcomings and deficiencies in the aeronautical communications field essential support for the implementation of new CNS/ATM systems II- NETWORK PRESENTATION Its Asset!"the widest supranational aeronautical network in the world!"the aeronautical network which has the greatest number of earth stations!"the diversity of the techniques, protocols used and available services!"autonomous network!"its positioning as ATN subnetwork!"its network Management Committee!"The widest supranational aeronautical network in the world Present in twenty two countries (see map in appendix)!"the aeronautical network which has the greatest number of earth stations implemented around two INTELSAT satellites: IS (IBS et FASTCOM)

2 2 IS (FASTCOM) Fifty two earth stations (diagram in appendix) Four B type stations :11 m diameter antenna Fourteen F2 type stations : 7.30 m diameter antenna Thirty four F1 type stations : 4,60 or 3,70 m diameter antenna!"the diversity of the techniques, protocols used and available services possible transmission modes MCPC (Multiple Channel Per Carrier) SCPC (Single Channel Per Carrier) operation modes IBS(network topology in IBS in appendix) FASTCOM(network topology in FASTCOM in appendix) used protocols data : X.25; Frame Relay; Asynchronous (V24); TCP/IP. voice: over Frame Relay. available services Aeronautical Fixed Service: AFTN; ATS/DS and GTS Aeronautical Mobile Service: remote VHF. AA C(Aeronautical Administrative Communications) Aeronautical INTRANET Remote maintenance Audioconference!"autonomous network exclusively managed, operated and maintained by the members; Organisations providing air navigation services. Each member for its home communications, can extend the network in its area of responsibility ((for example: ASECNA, NAMA, ROBERTS FIR, MAURICIUS and GCAA(GHANA CIVIL AVIATION AUTHORITY))!"its positioning as ATN subnetwork X.25 network implementation VHF stations implementation equipped with D8PSK modulation Interoperability between aeronautical fixed network and Aeronautical Mobile Network Link digitalisation AFTN interoperability with CAFSAT and SADC networks!"its Network Management Committee Its objectives, notably : network extension interconnection with other African networks periodic review of network (status and required performances)

3 co-operation, in various fields, between network centres!"its functioning : founding members: ICAO, GCAA, NAMA(FAAN), ASECNA, Project Co-ordinator(SERCO- IAL) observers: ALCATEL, ALENIA, EU two annual meetings free participation II - Conclusion The meeting is invited to: take note of the above mentioned information encourage SNMC members to consolidate theirs efforts, assuming seamless communications in AFI Region 3

4 4 ANNEXE

5 AFISNET STATE MEMBERS

6 AFISNET Earth Stations 6 Togo Tchad Sénégal Sao Tome RCA Ghana Guinée Guinée Equ. Madagascar Mali Maurice Mauritanie Niger Nigeria States Members Standard F1 Standard F2 Standard B Gabon France Côte d'ivoire Congo Comores Cameroun Burkina Benin Number of earth stations

7 7 NETWORK TOPOLOGY IN IBS MODE INTELSAT E SE ZONE (B POL)105/105 XDER 9 NIAMEY SOKOTO N'DJAMENA DAKAR CONAKRY JOS KANO MAIDUGURI DOUALA ILORIN ABUJA PO RT HARCOURT BANGUI ABIDJAN ACCRA LAGOS LIBREVILLE BRAZZAVILLE

8 8 NETWORK TOPOLOGY IN FASTCOM MODE INTELSAT E A POL XDER 20/20 EH/EH INTELSAT 707@359 E B POL XDER86/86 GB/GB DIRKOU TESSALIT NIAMEY AGADES NDJAMENA DIRE FAYA LARGEAU ATAR BAMAKO GAO OUAGADOUGOU ZINDER GAROUA AM-TIMAN MORONI ANTSIRANANA NOUAKCHOTT NOUADHIBOU LOME COTONOU OUESSO BRAZZAVILLE BOUAR MAHAJANGA TOAMASINA MAURICE DAKAR MALABO POINTE-NOIRE TAMBACOUNDA eamac IVATO REUNION TOLEARA Remarque: - Les couleurs des antennes indiquent le(s) Hub(s) de rattachement des VSAT

9 9 AFTN INTEROPERABILITY WITH CAFSATNETWORK Intelsat E Transponder 105/105 ZSE Intelsat E Transponder 20/20 EH-EH 38/38 GA-GA RESEAU AFISNET RESEAU CAFSAT AFTN SWITCH DAKAR