Shi, Jeff; Flanagan, Barbara; Mao, Tony; Sanford, Terry; TSI TelSys, Inc. (International Foundation for Telemetering, 2000-10)
      After a slow start, the CCSDS Telecommand Recommendation is finally being embraced by a large number of NASA, ESA and NASDA space missions. Even some commercial satellites are exploring the possibility of using this advanced protocol. The CCSDS Telecommand is a closed-loop space communication protocol that offers its users a guaranteed data delivery service, which is essential for the satellite control operations. This paper describes a commercial product that supports the CCSDS Telecommand protocol. This product provides Telecommand uplink segmentation, transfer, coding and physical layer services and Command Operations Procedures (COP). Optionally, it provides corresponding functions at the receiving end for command link verification.