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:
“And out of the ground made the Lord God to grow every tree that is pleasant to the sight, and good for food: the tree of life also in the midst of the garden, and the tree of knowledge of good and evil. And a river went out of Eden to water the garden.”
—Bible: Hebrew Genesis 2:9-10.
“Professor: War is hell, Mr. Thornhill, even if it’s just a cold one.
Roger Thornhill: If you fellows can’t lick the Vandamms of this world without asking girls like her to bed down with them, and fly away with them, and probably never come back, perhaps you ought to start learning how to lose a few cold wars.
Professor: I’m afraid we’re already doing that.”
—Ernest Lehman (b.1920)