Status of the Global Telecommunication System connected with

Status of the Global Telecommunication System connected with RTH Tokyo Japan Meteorological Agency Prepared by Takahiro Saito Presented by Y. Takeuchi Seventh Meeting on Asia-Pacific Satellite Data Exchange and Utilization (APSDEU-7) (Honolulu, USA, 20 to 22 September 2006)

1. Current status of the GTS -MTNAS one of the RTHs on the MTN…. • Tokyo has connectivity with four centers on the MTN • Tokyo is one of gateways interconnecting Networks I and II Network I Tokyo Melbourne Washington Buenos Aires Brasilia Beijing Sofia Moscow New Delhi Prague Exeter Jeddah Offenbach Network II Nairobi Managed Toulouse data communication network Dakar Algiers Cairo 2006

2. Current status of the GTS -Region II (Asia)RTH in Region II NMC in Region II Centre in other region 64 K MTN circuit Regional circuit Interregional circuit Additional circuit No implementation Non-IP link Internet E-mail transmission NI IMTN-MDCN Frame Relay CIR<16/8 K> NI Tehran 64 K Internet Washington Dushanbe Doha Offenbach 1200 NI 64 K 50 75 NI Internet Abu-Dhabi Beijing IMTN-MDCN Frame Relay CIR<48/48 K> Muscat Internet 64 K Male Colombo ISDN 128 K Melbourne Vientiane Yangon 50 200 Regional Meteorological Telecommunication Network for Region II (Asia) Current status as of June 2006 64 K Bangkok 75 Singapore Frame Relay CIR<16/16 K> Hong Kong Hanoi 100 Internet 50 Seoul 128 K CMA-PCVSAT Dhaka 32 K Frame Relay CIR<16/16 K> Melbourne 2. 4 K 50 Tokyo Frame Relay CIR<32/32 K> 64 K CMA-PCVSAT 768 K CMA-PCVSAT 48 K IMTN-MDCN 75 Frame Relay CIR<96/48 K> Internet IMTN-MDCN Frame Relay CIR<16/16 K> Kathmandu 100 Cairo 14. 4 -33. 6 K (V. 34) Pyong. Yang Moscow Internet Sanaa Frame Relay CIR<8/8 K> 14. 4 K Frame Relay CIR<8/8 K> Thimpu New Delhi 200 7. 2 -28. 8 K (V. 34) 75 Kabul NI Algiers Cairo N I Karachi Bahrain Jeddah Internet N I 7. 2 -28. 8 K (V. 34) CMA-PCVSAT IMTN-MDCN Frame Relay CIR<8/8 K> 64 K via Moscow Ulaanbaatar 19. 2 -24 K (V. 34) N I 100 64 K 50 Tashkent N I 50 Kuwait via Moscow 9. 6 -26. 4 K (V. 34) Ashgabad N I Bishkek 9. 6 -26. 4 K (V. 34) 2. 4 K 64 K 16 K 64 K IMTN-MDCN CIR<32/768 K> Khabarovsk Frame Relay CIR<8/8 K> Almaty 19. 2 -24 K (V. 34) 9. 6 -26. 4 K (V. 34) N I 64 K Novosibirsk 9. 6 -19. 2 K (V. 34) Offenbach Baghdad Washington 64 K Moscow Macao 9. 6 K Frame Relay CIR<16/16 K> 1200 IMTN-MDCN CIR<16/32 K> Manila NI Frame Relay CIR<16/16 K> Phnom Penh Melbourne Kuala Lumpur

3. GTS links connected with RTH Tokyo 64 kbps Hong Kong 64 kbps Seoul HKT FR Network CAT FR Network MTN Regional circuits 128 kbps Bangkok KDDI DACOM PLDT FR Network 64 kbps Washington Manila Frame Relay (FR) Network-to-network Interconnections 192 kbps Khabarovsk Beijing 14. 4 -33. 6 kbps Khabarovsk Dedicated line connections OBS FR Network (Cloud II) 1. 5 Mbps BT FR Network (Cloud I) Tokyo New Delhi Hong Kong Regional Telecommunication Hub (RTH) Tokyo 128 kbps Seoul Bangkok Manila Melbourne 1. 5 256 64 256 Mbps • All links are being operated kbps New Delhi Beijing Melbourne Washington on TCP/IP basis. Improved MTN (Two Seamless Networks) • Eight of nine are IP over Frame Relay.

4. Traffic status of the Tokyo-Washington link 25 Mbytes/day 55% of CIR=32 kbps CIR=768 kbps Tokyo FR 1. 5 Mbps 40% of CIR 1076 Mbytes/day Washington 1. 5 Mbps

5. Traffic status of the Tokyo-Melbourne link 124 Mbytes/day 100% of CIR=32 kbps Tokyo FR 1. 5 Mbps 83% of CIR 100 Mbytes/day Melbourne 256 kbps

6. Traffic status of the Tokyo-Beijing link 454 Mbytes/day 100% of CIR=96 kbps CIR=48 kbps Tokyo 128 kbps 28% of CIR 27 Mbytes/day FR Beijing 256 kbps

7. Traffic status of the Tokyo-Seoul link 135 Mbytes/day 200% of CIR=16 kbps Tokyo 192 kbps 3% of CIR 1. 2 Mbytes/day CIR=16 kbps FR FR Seoul 64 kbps

8. Traffic status of the Tokyo-Hong Kong link 209 Mbytes/day 64 kbps line (100% of access circuit at Hong Kong) 200% of CIR=16 kbps Tokyo FR FR 192 kbps 1% of CIR 0. 3 Mbytes/day CIR=16 kbps Hong Kong 64 kbps

9. GTS facilities in RTH Tokyo -Conceptual design- • Central telecommunication facility in JMA was fully replaced in October 2005. • The new GTS switching system is composed by two UNIX servers in a cluster. Message/File Switching System UNIX Operating system CPU 1. 9 GHz X 4 Message editing Fax format conversion Memory 8 GB cluster control Back-end system BUFR encode & decode Shared disk WMO monitoring UNIX Operating system CPU 1. 9 GHz X 4 　GTS links Memory 8 GB Major functions supporting GTS operations + Message and Fax exchanges by both socket and so-called batched ftp through GTS + File exchanges by ftp through GTS + Collection of observational data by e-mail via the Internet NWP system Intranet systems Internet

10. JMA Internet Connection • Multi-homed connections to Internet with two dedicated links since 2001 • Two 20 Mbps links in operation: one since February 2005, the other since March 2006 Internet ISP #1 20 Mbps JMA Intranet ISP #2 Multi-homed connections for reliability 20 Mbps Packet Shapers Router Controllers Firewalls Load Balancer DMZ FTP Servers Public Servers 2005 2006

Thank you for attention