Amtsleitung
The word Amtsleitung has two possible meanings:
1. It can refer to the phone line between the exchange and the socket in a flat or house, also known as the Letzte Meile (last mile).
2. It can also be used to talk about an “outside line” in a corporate environment. People talk about “ein Amt holen” or “eine Amtsleitung holen”, ie. obtaining an outside line. Since ISDN is more popular in Germany than other countries, even private homes may have internal extension numbers require a number, eg. 0, to ring an external number.
To hear a simple explanation and a short discussion in German, listen to the podcast:
(Press the “play” button to listen to the podcast)