You click the handset down, like you are hanging up the phone, but just very briefly.
So think of the cradle switches - what "hangs up" the phone - as a button, and you just click that button (quickly) for '1' and then you pause and hit it twice in very rapid succession for '2' ...
You need to be on a POTS line to do this, of course, but it will work even today. Even if you have no dialing mechanism, you can dial the phone this way ...
So think of the cradle switches - what "hangs up" the phone - as a button, and you just click that button (quickly) for '1' and then you pause and hit it twice in very rapid succession for '2' ...
You need to be on a POTS line to do this, of course, but it will work even today. Even if you have no dialing mechanism, you can dial the phone this way ...