I remember the technician from the phone company coming out just to install a new phone, and hardwire it into the wall or the little baseboard box.
Our fraternity house (1969-1973) was wired for landline phones in every room. There were a couple of house phones, but you could get a private line in your room if you paid to have the phone company come out, turn on the line, and connect the wiring at the patch panel. I remember changing rooms one year and going to the patch panel to move the wires around. I didn’t have the right tools, so I kludged the wiring. A phone company technician came out later, saw my work, and said “No phone company tech did this wiring!” in a low growl. I thought I was going to jail for tampering with government property. I never fessed up to the crime.