Светски поморски систем за опасност и безбедност (GMDSS) — Део 4: Inmarsat-C опрема бродске земаљске станице и Inmarsat опрема са унапређеним групним позивом (EGC) — Захтеви за рад и перформансе, методе испитивања и захтевани резултати испитивања
Global maritime distress and safety system (GMDSS) - Part 4: Inmarsat-C ship earth station and Inmarsat enhanced group call (EGC) equipment - Operational and performance requirements, methods of testing and required test results
IEC 61097-4:2012(E) specifies the performance requirements and methods of testing for Inmarsat-C ship earth stations (SES) capable of transmitting and receiving direct-printing communications, and for enhanced group call (EGC) receivers, for use in the GMDSS and for use for long-range identification and tracking (LRIT).