Grey Routes
Grey routes are arrangements that fall outside the regular course of business between the licensed telecoms companies in each country. The grey part of the route is usually at the far end where the call is terminated. Up to that point, there are normal arrangements to deliver the call from the subscriber to the sending carrier and between the sending carrier and the satellite or cable operator for the trunk part of the call. The grey-ness arises because at the far end the call is made to appear as if it originates locally, as a domestic call, rather than a more expensive international call. There are a number of types of grey route. Callback, which exploits the functionality of the SS7 signaling system, is discussed in another article.
Read more about this topic: International Telecommunications Routes
Famous quotes containing the words grey and/or routes:
“These little grey cells. It is “up to them.””
—Agatha Christie (1890–1976)
“The myth of independence from the mother is abandoned in mid- life as women learn new routes around the mother—both the mother without and the mother within. A mid-life daughter may reengage with a mother or put new controls on care and set limits to love. But whatever she does, her child’s history is never finished.”
—Terri Apter (20th century)