9 May
2017
9 May
'17
9:19 p.m.
On May 9, 2017, at 2:58 PM, Brent Hilpert via cctalk
<cctalk at classiccmp.org> wrote:
On 2017-May-09, at 9:06 AM, Chuck Guzis via cctalk wrote:
Yes, that's what the manual suggests, it lists a half dozen relays. It's not
clear why any of them would be more than one or two pole relays, but perhaps the ones that
were actually used (which are many-pole devices) happened to be standard units and were
"more than enough for the job".
paul
Looking at this documents:
http://www.samhallas.co.uk/repository/telegraph/data_set_101c.pdf
I sill can't figure out what a lot of the stuff inside is for.
I've looked at one of these modems in the bottom of a 33 although not examined it in
great depth.
I expect a large part of the volume of stuff like the relays isn't really modem but
call-management sequencing & switching: on/off hook, incoming-call detect, answer
detect, originate/answer mode switching, etc.