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 They have been replaced by electronic switching systems like the ones we (Nokia, formerly AT&T/Lucent/Alcatel-Lucent) design/manufacture/sell.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@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@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@gmail.com
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