I had one of these in my first house when I first moved in. It was a bit old fashioned even back then, but it was functional. It was even blue, similar to this one.
We got a fancy landline phone set up and cassette recorded answering machine later when my cousin moved in as my roommate. High tech stuff .
An orange one, wall based with a 20ft cord!! Party calling. Had to pick up the receiver to see if someone else was already using it and had no idea who it was.