[GreenKeys] TTY to Ethernet Converter or TTYoIP

[epvgk at limpoc.com]

On Sun, Jul 31, 2011 at 09:45:54PM -0400, Lee Spenadel wrote:
> Keelan,
> 
> This is quite impressive.  This prompted a thought in my mind.  Has anyone
> been able to interface a POP/IMAP email account to TTY?
> 
> Lee

I believe HeavyMetal will do that. 

eric

> 
> From:  Keelan Lightfoot <keelan at mail.grenander.com>
> Date:  Sun, 31 Jul 2011 18:42:14 -0700
> To:  Green Keys <greenkeys at mailman.qth.net>
> Subject:  [GreenKeys] TTY to Ethernet Converter or TTYoIP
> 
> Lee's queries about connecting a teletype to a PC has prompted me to share a
> project I've been working on.
> 
> I'm working on a 'TTY to ethernet' converter, that will eliminate the need
> for a separate computer entirely. The hardware design is complete, and I
> have all the pieces needed to build a prototype, I just haven't had the time
> to put one together. The hardware will occupy a board about the size of a
> business card, and will include an ethernet port for connecting to a
> network, and a teletype loop connection (reconfigurable as either half
> duplex or full duplex).
> 
> My initial design was going to use a Lantronix XPort, which is a
> serial-to-ethernet converter housed in a slightly oversized through hole
> ethernet jack. The XPort wasn't capable of anything lower than 300 baud, 8
> bit operation, so I was going to include a PIC microcontroller to handle the
> conversion to 45 baud, 5 bit operation. Then I discovered that the same
> people that make the Xport also make the XPort 'pro', which is the same
> hardware, but it runs a tiny Linux OS.
> 
> I've spent some time poking around the serial driver firmware source, and it
> supports 5 bit operation out of the box (contrary to the XPort
> documentation), and with a few changes to the firmware, I will be able to
> add 45.45, 50 and 75 baud operation.
> 
> The idea is to allow a teletype to connect to any internet service that
> supports telnet, including other teletypes. I've also been working on a
> 'TTYoIP' server that would allow a number of teletypes to be connected
> together on a virtual loop via the internet.
> 
> Anyway, I'll update as I make more progress on the hardware, but I'm curious
> if there'd be any interest in this. The fully populated board would probably
> cost somewhere in the range of $100, most of that cost is for the XPort
> module, which costs around $70 alone.
> 
> - Keelan
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