M
Mobitex
Ericsson's Eritel subsidiary's cellular land-radio-based packet-switched data communication system. Used by RAM mobile data. The raw data transmission bit rate was originally 8,000 bits/s (using 512-byte packets) for all installations, which provides a user data throughput of about 2.4 to 5 kbits/s, but this has been upgraded to 19,200 bits/s in some larger cities. Usage charges are per kilobyte. More open that the competing Ardis system, since all specifications are developed by the Mobitex Operators Association. Was designed by L.M. Ericsson and Swedish Telecom. Uses 896 to 901 MHz and 935 to 940 MHz. Cantel offers the service in Canada. Available in about 11 countries, but different frequencies are used, so roaming is complicated. L.M. Ericsson server is http://www.ericsson.nl/. (Taken from O’Reilly.)