OASIS INFORMATION (NAS INTERFACE SIMULATOR) The Federal Aviation Administration's (FAA), Flight Service Stations Product Team for the Operational and Supportability Implementation System (OASIS) is providing a National Airspace System (NAS) interface simulator as a developmental aid for vendors interested in the OASIS acquisition. The use of the simulator is not mandatory for OASIS contract award consideration. Vendors who elect to use the simulator do so at their own risk. The Government will, in good faith, provide an operational interface simulator. The Government will provide to NIST X.25 certified-vendors, as verified by the FAA, an information package that contains the sequence of events, such as the following, for use of the simulator: (1) Details on how to obtain a preprogrammed CODEX 3600 modem: (2) FAATC schedule for NAS NADIN II Packet Switching Network (PSN) validation testing; (3) NADIN II Test Node ports for End-to-End (Loop Back) development; (4) Recorded Service ``B'' (Flight Plan) data via a NADIN II Test Node port; and (5) Recorded Service ``A'' (WMSCR Weather Text) data via a NADIN II Test Node port. It is anticipated that simulator usage time allotments will be distributed as FAA-controlled windows of opportunities each day. The sequence of events, availability, support, and general simulator service are subject to change without prior notification. Simulator/NADIN II Test Node access security and time monitoring has been implemented via the CODEX Modem Access Controller system. Vendors will be able to request their own passwords. Vendors interested in receiving the information package must submit their NIST X.25 certification documents to the OASIS Contracting Officer for FAA verification. Any questions concerning this SPECIAL NOTICE or the OASIS project shall be directed to the OASIS Contracting Officer either by INTERNET (address: pgreen@mail.hq.faa.gov) or U.S. mail at the following address: Federal Aviation Administration, ATTN: Ms. Patricia A. Green, ASU-350, Market Square, Suite 625, 701 Pennsylvania Avenue, NW, Washington, DC 20004 (Telephone number: (202) 376-6289; FAX number: (202) 724-0624). This special notice and another file, ``sim_x25.doc'' concerning the X.25 HW/SW used in the simulator, are accessible on the OASIS INTERNET mailbox at www.faa.gov/. From the FAA Home Page, tier down through Products & Programs; Acquisition Documents (Gopher); Major FAA Programs; Operational and Supportability Implementation System (OASIS).

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