When I was younger in the US the situation was similar, but I thought it was up to the originator of the call to disconnect. Been too long to be certain of my recollection.

I never determined the timeout, and I haven't had a land line in at least 15 years to experiment with.

You could be right, I can’t remember if the times that happened were when I originated the call or my friend did. I know it didn’t work all the time, and I think it stopped working at some point too.

This was back in the days when you could tell roughly where someone lived by their phone number - 43x—xxxx was south Edmonton (but not Mill Woods or Riverbend), 2xx-xxxx was Calgary, area codes didn’t matter because the whole province was 403, etc. The phone system is a lot different now - you can port a landline to a cell phone (and vice-versa). The original phone number where that happened has been ported to the cable company and now goes through coax (the equipment that handles it is basically a cable modem with a phone jack).

Actually, I’m coming around to your point of view. I think it was the recipient who controlled the “transaction”.

The world was so very different. Waiting for that 0 to finally work its way around the dial, good grief. Especially since as a kid I was perpetually afraid any phone number that included a 0 might lead me to somehow get connected to a phone operator, so I wanted to dial the following number as quickly as possible.

One of the things that radio hosts here joke about is how kids with a zero in their phone number had fewer friends. “Oh, I don’t want to call Bobby, he’s got two zeroes in his phone number, it takes so long to dial”. Between that and risking talking to An Adult and getting In Trouble, I wonder how true that is.