Ground Start

In telephony, a ground start or GST is a method of signaling from a terminal or subscriber local loop to a telephone exchange, in which method a cable pair is temporarily grounded to request dial tone. Most middle 20th century American payphones used "coin first" ground start lines, with the starting ground passing through the coin itself.

Read more about Ground Start:  Ground Start Trunk

Famous quotes containing the words ground and/or start:

    “Nor must Uncle Sam’s Web-feet be forgotten. At all the watery margins they have been present. Not only on the deep sea, the broad bay, and the rapid river, but also up the narrow muddy bayou, and wherever the ground was a little damp, they have been, and made their tracks.”
    —Abraham Lincoln (1809–1865)

    “If everything is perfect, language is useless. This is true for animals. If animals don’t speak, it’s because everything’s perfect for them. If one day they start to speak, it will be because the world has lost a certain sort of perfection.”
    —Jean Baudrillard (b. 1929)