1. Internet2 – Spring Meeting “INTERNET TWO – Is It The Future of GDLN?“ Dr. Vili Brajovic Global Communications Manager

2. HIGH SPEED GLOBAL CONNECTIVITY: BRIDGING DISTANCE AND TIME High-speed, reliable network of regional satellites and fiber A network of 3 satellites serves the Bank’s offices in Africa, Asia, Europe, Latin America and the Caribbean, and the Middle East Voice, data, video, fax, Internet and Intranet access to 114 Bank Offices and 24 Distance Learning Centers 1

3. 24 GDLN CENTERS CONNECTED TO THE BANK’S NETWORK Managing public expenditure Judicial reform E-commerce, e-government Hospital management Indigenous profiles Municipal management Intellectual property rights Agricultural technology and productivity Child protection Citizen participation in national policy dialogue Anti-corruption and transparency Disaster management 2

4. NUMBER OF VC SESSIONS PER YEAR BANK’S GLOBAL NETWORK VIDEOCONFERENCING GROWTH 3

5. BANK’S GLOBAL NETWORK BANDWIDTH GROWTH SATELLITE CAPACITY VERSUS DEMAND 4

6. BANK’S GLOBAL NETWORK INDORMATION CAPACITY GROWTH 5 INFORMATION CAPACITY PER FIELD OFFICE

7. BANK’S GLOBAL NETWORK UNIT COST 6 UNIT COST OVER THE BANK’S NETWORK

8. High-level service quality (99.8% availability) Low monthly operational costs (<$4k/month) Local presence for operation and maintenance (<24h repair time) GDLN GLOBAL NETWORK SERVICE REQUIREMENTS 7

9. Originaly Designed For Data Only 32bit IP Addresses (cca 4 billion addresses) Security Solutions Application Based Quality-of-Service (QoS) Only Implemented on Dedicated Routes Existing Designed For Multimedia Applications (Voice, Video, Data) 128bit IP Address (cca 340 trillion trillion trillion addresses) Built-in Security Solution Built-in Quality-of-Service Network Wide Slowly Emerging INTERNET ONE VERSUS INTERNET TWO INTERNET ONE IPv4 INTERNET TWO IPv6 8

10. CURRENT INTERNET TWO IMPLEMENTATIONS Private Corporate Networks Limited Commercial Offerings On Dedicated Routes (In USA Sprint Provides Limited Service Beween Some Cities) In Europe Some Universities Have implemented Internet Two at Their Campuses The World Bank Has Implemented Internet Two Over It’s Global Network 9

11. GDLN/BANK’S GLOBAL NETWORK STRUCTURE PRIOR TO SEPTEMBER 2002 EASTERN EUROPE REGION FIBER OPTIC LINE (DS3) SATELLITE CONNECTIVITY ASIA REGIONS SATELLITE CONNECTIVITY AUSTRALIA TELEPORT AFRICA, LATIN AMERICA AND MIDDLE EAST REGIONS 342 Degrees INTELSAT Satellite (GLOBAL BEAM) ORION 3 Satellite 64 Degrees INTELSAT Satellite (Hemi Beam) HEADQUARTERS 10

12. EASTERN EUROPE REGION FIBER OPTIC LINE (2xDS3) SATELLITE CONNECTIVITY ASIA REGIONS SATELLITE CONNECTIVITY GERMAN TELEPORT AFRICA, LATIN AMERICA AND MIDDLE EAST REGIONS 342 Degrees INTELSAT Satellite (HEMI BEAMS) ORION 3 Satellite 64 Degrees INTELSAT Satellite (Hemi Beam) HEADQUARTERS GDLN/BANK’S GLOBAL NETWORK STRUCTURE AFTER SEPTEMBER 2002 11

13. BENEFITS FROM TELEPORT RELOCATION Better prime-time working hours overlap Reduced overall latency for 300msec Reduced fiber backbone costs Reduced satellite bandwidth costs 12

14. (Dedicated Links) PAMA (Virtual DAMA Links) DAMA HEADQUARTERS (Virtual DAMA Voice, Video and Data IP Channels) IP Over Asymmetrical SCPC INTELSAT’S DAMA NORTEL-DASA TDM/TDMA/FR FO DLC FO HEADQUARTERS GDLN/BANK’S GLOBAL NETWORK EVOLUTION STRATEGY GOVERNMANT DLC INTERNET ISDN DLC 13

15. IP SERVICES WITH GUARANTEED QOS QOS implemented on fragmented high utilized links supporting 768kbps QOS provides bandwidth and jitter guaranties QOS is based on end-to-end “diffserv” model 14

16. QOS IMPLEMENTATION: CISCO LLQ Voice Data Video WFQ Class. & Mark Police CBWFQ LLQ 15 PQ PQ - Priority Queue WFQ - Weighted Fair Queue CBWFQ - Class Based Weighted Fair Queue LLQ – Low Latency Queue

17. IP VOICE (VoIP) Toll bypass approach: Keep existing telephones and PBXs Use VoIP to provide connectivity between the PBXs VoIP based on G.729 codec: 8kbit/s CS-ACELP codex Excellent voice quality MOS 3.92 (compare to MOS 4.1 for G.711/pcm) 16

18. VOICE HEADER COMPRESSION VoIP is based on 8Kbps algorithm, which with overhead requires 26.4Kbps IP channel (40 bytes IP/UDP/RTP header) When RTP header compression (RFC2508) is used, for the same algorithm only 11.2Kbps IP channel is needed (40 bytes of IP/UDP/RTP reduced to 2–4 bytes) 17

19. IP VIDEO Room based videoconferencing systems H.323 based videoconferencing 256Kbit/s per call G.711 for audio (64Kbits/s) H.261 for video (~180 Kbit/s) 18

20. ASYMETRICAL SCPC SATELLITE CHANNELS 10 SCPC 768Kbps satellite channels combined into A single sub- group Each sub-group is served by a single 8Mbps outgoing channel and eight 768Kbps return channels Asymmetrical solution provides an excellent bandwidth utilization One single 256Kbps outgoing video stream is used to feed all eight nodes during multi-point video session 19

21. IP MIGRATION BENEFITS Single communications pipe for voice,data and video Low operation and management costs Low communications equipment complexity (only router) Easy integration with local area networks (desk-top video) Improved quality of all services 20

22. IP MIGRATION BENEFITS(continued) Simple re-engineering for future growth Automated videoconference scheduling Automated dynamic service interchange Full compatibility with Internet 21

23. Gartner Measurement World Bank Management Presentation BENCHMARKING THE BANK’S GLOBAL NETWORK WITH OTHER COOPERATE PRIVATE NETWORKS 22