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On Mon, Jan 30, 2023 at 6:01 PM, ben via cctalk<[email protected]> wrote:On
2023-01-30 1:50 p.m., Paul Berger via cctalk wrote:
>> On 2023-01-30 2:12 p.m., Fred Cisin via cctalk wrote:>>>> The 5150 had a
>> cassette port!>>>> . . . The 5160 no longer had the cassette port.>>>> On
>> Mon, 30 Jan 2023, Paul Berger via cctalk wrote:>>> The cassette port on the
>> 5150 could also be used as a>>> Telecommunication Device for the Deaf (TDD)
>> many years ago I made up>>> a ISA bus card with the same function as the
>> cassette port for a>>> gentleman that wanted to move on from a 5150 but
>> still needed the>>> cassette port for a TDD device.>>>> Interesting!>>>> Was
>> that stand-alone and compatible with the ordinary TDD/TTY units?>> (and
>> coupled to a modem)>> Or was that solely for communicating with other
>> 5150s?>>>> Or was that to use the 5150 as a KSR terminal for a TDD/TTY
>> handling>> the POT communication?>>>> -->> Grumpy Ol' Fred
>> [email protected]>>> I don't recall all the details but I seem to recall
>> that the cassette> interface was used to generate the modem tones and would
>> be connected to> an acoustic coupler. I believe the software emulated a
>> TDD/TTY but I> don't recall if it was Baudot or ACSII. It would not have
>> been a stretch> to do it all in software as the rate is only 45 Baud and the
>> tone> generation for the cassette interface was done in software.>> Paul.
>RTTY software might do that.Ben.
And rtth uses different tones from tdd
totally differentED#
