The song is a ballad, with Hielscher singing to a telephone and telling it that she enjoys receiving news (from the lyrics, it is implied that this is news from a lover) via that medium. In the course of the song, she answers the telephone and responds in English, French, Italian and Spanish. This section of the lyrics gave rise to what is generally considered the first "gimmick performance" in Contest history, with Hielscher in fact picking up a real telephone receiver during her performance. At the end of the song, she picks up the telephone again and explains (on the telephone) that she can't talk anymore because her song (which was actually this song) is ending.
An interesting point is that the word Telefon is a German adaptation of the Latin term "telephone" which is very common in German speaking copuncties, however the actual German word for telephone is "Fernsprecher".