Main Page | See live article | Alphabetical index In telephony, a private line is a service that involves dedicated circuits, private switching arrangements, and/or predefined transmission paths, whether virtual or physical, which provide communications between specific locations. Note: Among subscribers to the public switched telephone network(s), the term "private line" is often used to mean a one-party switched access line. Source: from Federal Standard 1037C This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.