Teletype services

Ethan Dicks ethan.dicks at
Fri Nov 6 09:24:43 CST 2015

On Thu, Nov 5, 2015 at 7:03 PM, Brent Hilpert <hilpert at> wrote:
> On 2015-Nov-05, at 10:59 AM, John Ball wrote:
>> I've been trying for the past week to verify that telephony on my teletype
>> machine (model 33) is functioning properly but the biggest hurdle I am
>> running into is I have nothing to easily dial into...
> I'm not familiar with all the possible modem variations one might find in a 33, but AIUI the modem for the 33 at the standard 110 bps was Bell 101 standard.

When I got an ASR33 with a built-in dataset (from the Dayton Hamfest,
in the 80s), I had much the same quandry.  At the time, my best
solution was to call up a local CompuServe number.  I got a login
prompt and called it good.

That said, I'd be a little surprised if that trick still worked.


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