[GreenKeys] Rotary telephone switches?

Chuck Rehor chuck at rehor.com
Sun Nov 26 21:50:05 EST 2023


Electromechanical Step-by-Step switches are not used in the telephone
system anywhere anymore. They have been replaced by electronic switching
systems like the ones we (Nokia, formerly AT&T/Lucent/Alcatel-Lucent)
design/manufacture/sell.

Your rotary phone still works on the telephone network because the
electronic switching system is backward-compatible with old rotary
telephones. They don’t need the old Step-by-Step switches to decode the
pulses produced by rotary phones.  We do it with software.

On Sun, Nov 26, 2023 at 8:33 PM E. <hanyou at xsmail.com> wrote:

>
> I’m not sure if the switches are still used (pretty sure they aren’t), but
> my telco still allows rotary over POTS… most of the phones I use in my
> house are rotary Automatic Electrics.  Why?  ‘Cause my telco was a former
> Independent Bell and not/still not part of the Big Ma Bell network ;) .
> Even still have callback!
>
>
> > On Nov 26, 2023, at 8:13 PM, Roy Morgan <k1lky68 at gmail.com> wrote:
> >
> > Is there anyone actually using the rotary telephone switches? I have
> some tools that seem to be specific to those things.
> >
> > Roy
> >
> > Roy Morgan
> > K1LKY Western Mass
> > K1LKY68 at gmail.com
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