[vcf-midatlantic] AT&T Dataphone - Modem or "Service"?

Dave McGuire mcguire at neurotica.com
Thu Aug 8 14:21:43 EDT 2019


On 8/8/19 10:42 AM, Neil Cherry via vcf-midatlantic wrote:
>> The short-short of it: citing
>> http://www.bitsavers.org/pdf/att/000-111_ATT_Documentation_Guide_Nov87.pdf
>>
>>      Dataphone is a registered trademark of AT&T
>>
>> I saw the Dataphone label on all sorts of modems:
>> SDLC, async, dialup and probably leased line as well.
> 
> Yup, lots of DS0 (and sub divided DS0s) and T1s. Not so many T3s as
> those we too expensive.

  Long before those were common for this type of use, there was a big
crop of leased-line subrate modems that bore the Dataphone moniker, from
9600 baud down to 1200, and possibly below that.  These were for
four-wire leased lines.

             -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA


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