1. International Satellite Communications System (ISCS) Re-competition September 2002

2. 2 ISCS Re-competition Network Features Network Changes/Improvements Broadcast Bandwidth Changes Site Equipment Replacements Workstations Schedule Network Diagrams End User Site Listing

3. 3 Network Features C-band satellites with full coverages in AOR and POR –Compatible with site-owned VSAT equipment –Full coverage to all existing users –Expandable to future sites –Options to upgrade receive sites to 2-way 24/7 operation for real-time collection and broadcast of weather products GRIB, BUFR, T4-FAX, and text products

4. 4 Network Changes/Improvements IP capability added to existing X.25 –NWSTG broadcast will be XoI Interfaces changed at NWSTG and Sites –Site FRAD replaced with interface box –Sites will have both X.25 and IP capabilities –X.25 phased out when all workstations are replaced ( 1 st quarter CY 2004 is target ) –Socket streaming output and FTP input added to NWSTG

5. 5 Broadcast Bandwidth Changes 64 Kbps baseline bandwidth for AOR & POR –Separate IP Sockets for AOR & POR provide opportunity for different data content Increased data rates available as options –Selectable at 25%; 50%; 75% or 100% increase Capable of bursting during high data volumes

6. 6 Site Equipment Replacements Technology Substitution provisions –Option to replace VSATs or interface equipment –Permits performance improvements or upgrades –Replacement of aging equipment –Funded by sources yet to be determined

7. 7 Workstations Workstations are not included in procurement NWS International Activities responsible for workstation activities

8. 8 Schedule RFP release February 1, 2002 Contract Award originally scheduled for October 1, 2002 will probably slip until November Complete deployment August 1, 2003

9. 9

10. 10

11. 11

12. 12

13. 13 AOR Receive Sites (WAFS) RA-III ArgentinaBoliviaBrazil (2 sites) ChileEcuadorParaguay Peru (2 sites)SurinamUruguay Venezuela RA-IV AnguillaBermudaCanada Cuba – AeroportDominicaMexico –Aeroport MontserratSt. KittsSt. Vincent TortolaU.S. - Silver SpringU.S. – Kansas City U.S. – Camp Springs RA-VI AzoresUnited Kingdom

14. 14 AOR 2-Way Sites (RMTN) RA-I Niger RA-III ColumbiaFrench GuianaGuyana RA-IV AntiguaArubaBahama Barbados (2 sites)BelizeCayman Islands Costa RicaCuba (Met Service)Curacao Dominican RepublicEl SalvadorGrenada GuadeloupeGuatemalaHaiti HondurasJamaicaMartinique Mexico (Met Srvc)NicaraguaPanama Saint LuciaSint MaartenTrinidad & Tobago U.S. Silver SpringU.S. San Juan, PRU.S. Coral Gables

15. 15 POR Receive Sites (WAFS) RA-II China Peoples RepJapan Korea Korea Peoples RepChina - TaiwanViet Nam RA-III Easter Island RA-V American SamoaAustraliaBrunei Caroline IslandCook IslandEast Timor FijiFrench PolynesiaIndonesia Johnston IslandKiribatiMariana Island Marshall IslandsNauruNew Caledonia New Zealand (2 sits)Niue Isl. (Korea)Papua New Guineea PhilippinesSamoaSolomon Islands TongaVanuatuWallis Island U.S. - Honolulu