@manu @pluralistic
Another early form of (legit, sorry!) free calls was the old Zenith numbers. This predated the 800 toll free lines. You had to call the operator and ask to be connected to the 5-digit number you wanted.
A company I worked for in the 80s still had a Zenith number published in the white pages even though it had long been disconnected. We tried calling it and were greeted with a very suspicious "and WHO are you trying to reach???" - we hung up.
@DenOfEarth @manu @pluralistic Is this something different from the abbreviations they used to use for all phone numbers? They used to use the letters associated with the digits as a quick code for operators - for instance, in Central New York there was an exchange that began 756 or 753: those numbers were referenced as 'Skyline', so to call 756-8413 (made up number, do not call!) You would ask the operator for 'Skyline 6-8413'.
Anyone remember Beechwood 4-5789?
According to the Wikipedia article, Zenith numbers were so called because the letter Z was on the number zero (edit, or it should be, see pic), which would take you to the operator you needed in the first place.
@DenOfEarth @manu @pluralistic my dad used to tell me a story of how he and his friends got cheap calls from old UK payphones.
In those days, local calls were much cheaper than national; critically, "local" also included the geographical neighbour codes to the local area.
AIUI the paid rate was based on an (inaudible) signal from the exchange.
They worked out that you could hop from area to area by chaining area codes. As long as each exchange saw a local code, it would remain at local rate.
@Geoff @DenOfEarth @manu @pluralistic
There was a recording that i listened to in the early 1990's, called the Sounds Of Britain.
When rotary phones were still a thing, the exchanges used a similar mechanism. You could hear the clicks as the mechanism operated.
If you started dialling an adjacent area code before the first one had finished dialling through, so as long as you knew the numbers, you could dial all the way around the coastline of Britain, and then dial your own phone number. :D
@Geoff @DenOfEarth @manu @pluralistic
When you heard your own number start to ring, you had to hang up your phone.
Then within a few minutes you phone would ring, and when you answered it, all you would hear was the clangs and clicks of closing electro-mechanical connections. :D
Someone played me a tape of it in the early 90's, but i've never been able to find a copy since then. :D
@manu @pluralistic
My sister and I built a couple of Black Boxes so she could call home from college (pre SS7). The box worked by limiting the circuit voltage enough to stop the ring signal, but not enough to signal that the receiver was lifted.
So, you were basically talking over a circuit that Bell thought was ringing unanswered.
If we talked more than about 5 minutes, there was a good chance an operator would cut in to ask why we were letting it ring for so long…