Hi,
Sorry to bother you considering how precious the time is for you professionals but i want some guidance from you. Sir/Madam i want to learn about GMR standard for Inmarsat, its frame structure, channel coding (FEC), ETSI Standard (GMR 1 or GMR 2) etc. Actually i want to learn about how to decode Inmarsat data.
AFAICT only the iSatPhone Pro service is documented publically. It should be the GMR-2 specification, freely available from ETSI under "TS 101 377"
That's all I know about Inmarsat. All their other services are not publically documented under any standard.
Cheers,
Sylvain Munaut