RE: Historical trivia question

[John McKee <jmmckee@xxxxxxxxxxxxxx>]

Thanks for filling in that gap for me.

John McKee

Quoting Lance Gillespie <lgillespie@xxxxxxxx>:

> "In 1983, IBM developed a private packet radio data network called DCS (Data
> Communication System) for the use of its field engineers. This was 
> used for call
> dispatch and call reporting and some other data applications. The terminal
> device consisted of a hand held data terminal about the size and shape of a
> house brick, by which name it was consequently known. The radio 
> infrastructure
> was provided by Motorola and operated at 4.8 Kbps on a carrier 
> frequency of 800
> MHz. The network covered the major cities of the United States but the FCC
> licence did not allow the service to be sold to other users. At the 
> same time,
> Motorola was building a network using the same technology for public access.
> In 1990, the IBM and Motorola networks were joined to form a public access
> network known as ARDIS (Advanced Radio Data Information System). The
> original implementation of ARDIS used a protocol known as MDC4800, but a new
> protocol called RD-LAP is being introduced alongside with the advantage of
> operating at 19.2 Kbps."
>
> SG24-4465-01 page 14
>
>
> HTH,
> Lance
>
>
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