-- Hardware has low to medium processing requirements (control antenna position, format/interpret messages to/from satellites, transfer data to radios).
-- Hardware and software must have availability and reliability.
-- Use of proprietary hardware/software is discouraged due to potential for obsolescence, single-source support.
-- Use of COTS hardware/software and standard APIs, RPCs recommended for longevity, maintainability.
-- Security of systems is imperative, but a protected facility can be assumed.