STATUS OF IMPLEMENTATION AT RTH BEIJING SHI Peiliang, China

1. Current status of the GTS links at RTH Beijing LinkSpeedProtocolDataRemarks Beijing-Offenbach48/48Kbps(FR)FTP AN,Binary, Fax Upgraded to IP and joined IMTN Cloud II in April Backup link via Internet established in 2002 Beijing-Tokyo32/32Kbps(FR) TCP Sockets AN,Binary, Fax Upgraded to IP in December Plan to join IMTN Cloud II in 2003 Beijing-Seoul32/32Kbps(FR) TCP Sockets AN,Binary, Fax Upgraded to IP in August 2002 Beijing-Moscow Kbps(V.34)X.25 AN, Fax Migration to IP planned Beijing- Khabarovsk Kbps(V.34) Beijing -> X.25 - > Moscow -> IP -> Khabarovsk AN Via Moscow Beijing-Bangkok9.6KbpsX.25AN Migration to IP planned Beijing-New Delhi 9.6KbpsX.25AN Migration to IP planned Beijing-Hanoi 75 baud ASYNCAN PCVSAT receive-only station installed Beijing-Pyongyang 75 baud ASYNCAN PCVSAT receive-only station installed Beijing-Ulan Bator 75 baud ASYNCAN PCVSAT receive-only station installed

1. Current status of the GTS links at RTH Beijing Beijing Moscow Hanoi Pyongyang Hong Kong TokyoOffenbach Khabarovs k Ulan Batar Macao New Delhi Frame Relay CIR 48/48K Frame Relay CIR 32/32K Frame Relay CIR 32/32K Seoul Bangkok 9.6K 64K128K 75 baud K (V.34) IP link

2. GTS system at RTH Beijing Front End for IP connections AlphaServer ES40 Duplicated system UNIX Back End AlphaServer 1000 Duplicated system VMS Front End for Non IP connections MIRA (4) VMS Offenbach Tokyo Seoul Hanoi Pyongyang Ulan Bator Moscow Bangkok New Delhi Asynchronous circuits X.25 circuits IP over FR MSS Current GTS system at RTH Beijing Cisco PIX Firewall RMDCN Routers Cisco 2620 (HSRP) GTS Router Cisco 3640 IP over FR

2. GTS system at RTH Beijing Current GTS system at RTH Beijing Current GTS system at RTH Beijing The back end hosts and the facilities for non IP connections started operation in 1992, partially upgraded in 1997, and will be replaced by new facilities early next year. The back end hosts and the facilities for non IP connections started operation in 1992, partially upgraded in 1997, and will be replaced by new facilities early next year. The facilities for IP connections started operation in December The facilities for IP connections started operation in December 2001.

2. GTS system at RTH Beijing Offenbach Tokyo Seoul Hanoi Pyongyang Ulan Bator Moscow Bangkok New Delhi Asynchronous circuits X.25 circuits IP over FR New GTS system at RTH Beijing Cisco PIX Firewall RMDCN Routers Cisco 2620 (HSRP) GTS Router Cisco 3640 IP over FR Front End AlphaServer ES40 Duplicated system UNIX Back End Duplicated system UNIX based MSS Router Cisco PIX Firewall Web Server Internet DMZ

2. GTS system at RTH Beijing New GTS system at RTH Beijing New GTS system at RTH Beijing X.25 circuits and asynchronous circuits connect to the new system via a multiprotocol router. X.25 circuits and asynchronous circuits connect to the new system via a multiprotocol router. Computer systems Computer systems The front end and the back end are two separate systems. The front end and the back end are two separate systems. Each system is a duplicated system. Each system is a duplicated system. UNIX based UNIX based Application Software Application Software Front end Front end collecting and transmitting data via GTS links. collecting and transmitting data via GTS links. Supporting FTP, TCP sockets, X.25, Asynchronous Supporting FTP, TCP sockets, X.25, Asynchronous Back end Back end Checking, switching data Checking, switching data Packaging messages and files Packaging messages and files Distributing data to the other internal operational systems, such as real-time database. Distributing data to the other internal operational systems, such as real-time database. Operational monitor system Operational monitor system monitoring and managing the application system monitoring and managing the application system C/S based software C/S based software running on Linux based PCs running on Linux based PCs Internet Web Server Internet Web Server Located in the DMZ of CMA’s Internet system Located in the DMZ of CMA’s Internet system providing read-time observations and CMA’s products to national and international users providing read-time observations and CMA’s products to national and international users collecting meteorological data from other GTS centers by FTP and via Internet collecting meteorological data from other GTS centers by FTP and via Internet The new system will start operation in January The new system will start operation in January 2004.

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Offenbach link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN BIN FAX TOTAL Offenbach to Beijing Beijing to Offenbach

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Tokyo link Messages Daily Traffic (Kbytes) AN FAX4346 TOTAL Messages (Kbytes)AN BIN FAX TOTAL Tokyo to Beijing Beijing to Tokyo

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Seoul link Messages Daily Traffic (Kbytes) AN BIN18289 FAX10436 TOTAL Messages (Kbytes)AN TOTAL Seoul to Beijing Beijing to Seoul

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Moscow link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN FAX TOTAL Moscow to Beijing Beijing to Moscow

3. Daily Traffic on the GTS links at RTH Beijing  Beijing- Khabarovsk link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN TOTAL Khabarovsk to Beijing Beijing to Beijing to Khabarovsk

3. Daily Traffic on the GTS links at RTH Beijing  Beijing- Bangkok link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN TOTAL Bangkok to Beijing Beijing to Bangkok

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-New Delhi link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN TOTAL New Delhi to Beijing Beijing to New Delhi

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Hanoi link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN96 TOTAL96 Hanoi to Beijing Beijing to Hanoi

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Pyongyang link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN3816 TOTAL3816 Pyongyang to Beijing Beijing to Pyongyang

3. Daily Traffic on the GTS links at RTH Beijing  Beijing-Ulan Bator link Messages Daily Traffic (Kbytes) AN TOTAL Messages (Kbytes)AN8239 TOTAL8239 Ulan Bator to Beijing Beijing to Ulan Bator

4. PCVSAT System CMA’s VSAT-based distribution system CMA’s VSAT-based distribution system Communication Satellite: AsiaSat 2 Communication Satellite: AsiaSat 2 Area coverage: China, and South/East Asia Area coverage: China, and South/East Asia Data rate: 2Mbps Data rate: 2Mbps Supporting 256 logical channels Supporting 256 logical channels Over 2200 remotes installed in China and some NMCs of neighboring countries. Over 2200 remotes installed in China and some NMCs of neighboring countries. Pyongyang, May 2000 Pyongyang, May 2000 Ulan Bator, October 2001 Ulan Bator, October 2001 Hanoi, August 2003 Hanoi, August 2003 Via PCVSAT, Pyongyang, Ulan Bator, Hanoi can receive GTS data and RSMC Beijing products. Via PCVSAT, Pyongyang, Ulan Bator, Hanoi can receive GTS data and RSMC Beijing products.

4. PCVSAT System  Daily broadcasting traffic on the channel to Hanoi files Daily Traffic (Kbytes) Observations GRIB FAX TOTAL

4. PCVSAT System  Daily broadcasting traffic on the channel to Pyongyang files Daily Traffic (Kbytes) Observations GRID80480 GRIB FAX TOTAL

4. PCVSAT System  Daily broadcasting traffic on the channel to Ulan Bator Files Daily Traffic (Kbytes) Observations GRIB FAX TOTAL

5. Outage of the GTS links at RHT Beijing in 2003 BangkokHanoiMoscow New Delhi OffenbachPyongyangSeoulTokyo Ulan Bator Total Outage (hours)

Thank you !