What is Mobile ISDN?
Inmarsat Mobile ISDN is a single 64kbit/s ISDN-B channel offering full duplex data at 64kbit/s. It does not provide the same bandwidth as terrestrial ISDN, since it has one 64kbit/s bearer (‘B’) channel rather than two. However, a full 128kbit/s connection speed is attainable by linking two satellite terminals.