Home > VIZADA > Inmarsat M   The precursor to Inmarsat Mini-M, Inmarsat M service uses a briefcase-sized portable terminal for digital voice at 4.8 kbps, low-speed data and fax communications at 2.4 kbps. The small, lightweight terminals can be fitted on vessels too small to accept a Inmarsat A or Inmarsat B antenna. Service Features Digital Satellite Communications ..· Voice ..· Fax (2.4 kbps) ..· Data (2.4 kbps) Applications data transfer; fax, voice