Yes, when Deutsche Bundespost consisted of Gelbe Post, responsible for snail mail and Graue Post responsible for telephone. The former has become Deutsche Post, the latter Deutsche Telekom. Rumors that hint of them re-joining as Deutsche Kompost AG are just that...
On topic: I remember the days before ISDN, when one was tempted to use an illegal 9600bps Hayes modem, instead of the officially approved 300..2400bps modems. When I complained about that fact to a fellow computer club member, he looked me sternly in the eye and said: "at least our phone network works". I never understood what he meant, until I suffered some culture shock from exposure to U.S. telecom infrastructure.