Enhancement of Space Link Extension (SLE) Provider Software for Return Channel Frame (RCF) Service

The Space Link Extension (SLE), a CCSDS protocol, specifies a common interface between space agencies, to exchange satellite telemetry, telecommand and science data. ISTRAC (unit under ISRO), already provides cross support over SLE for TTC services. The existing SLE architecture is more suitable for TTC data transfer services for external missions with Provider and User Components. ISTRAC has recently implemented Return Channel Frame (RCF) service, for science data provisioning to end users. Considering the higher data rate, and also the need of secure internal architecture within ISTRAC, a new architectural design is implemented and presented along with the challenges encountered.