[GreenKeys] [Bulk] Re: [Bulk] Re: i-Telex, revisited...

[Jeffrey D Angus]

On 2/2/2016 4:05 AM, Henning Treumann wrote:
> Jeff,
>
> we are working on a modification of our software (firmware)
> to connect also 60WPM machines without the TW39 dialler unit.
But I'm still advocating people using 66 WPM machines to talk through
the i-Telex network.
> The (for our network needed) answerback is emulated by software
> on the board.
> But this makes it necessary to switch (auto start) the motor somehow
> when a call comes in.
> If a machines has such an idle line timer installed, as all my USTTY
> machines have surprisingly, the modification can be done only by software.
> For machines without such a timer there will be also need of a hardware
> modification to switch the motor with a relay.
Jack, K0TTY/K2TTY made up some autostart boards.
I built one for use with the Lo-15b without the Dial Control Unit.
> But anyway, an original Telex machine is still first choice in operation.
>
> Die "dual mode" board as you call it emulates a teleprinter at one port
> of the board.
> You can operate it with a terminal software at the serial port. But is 
> stand alone
> and receives and stores also messages without any computer/terminal 
> connected
Oh, right, so the "serial" port is actually an RS-232 interface, not a 
local
loop. But you can use a TTY machine with a loop to RS-232 converter to
talk to the serial port. And the machine is then "just a dumb terminal"
at that point and doesn't need any of the TWX/TW39 features.

-- 
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com