“Telephone Line / Poorboy” is a single by The Electric Light Orchestra from 1977. Telephone Line was recorded in July 1976, and according to Jeff Lynne: The telephone ringing was actually played on a Moog synthesizer. From England, they dialed a number in the USA.
Richard Tandy then tuned the oscillators to the same two notes as the ringing phone. And no, nobody answered, just like in the song.
Original Label. Picture Sleeve 45 on Green Vinyl. 45. United Artists XW 1000 1977 *****