Those extensions are defined on the listed-directory screen the extensions are incoming DID or DNIS digits sent from the trunk provider for incoming calls and are directly related to 800 numbers or 10 digit numbers being called from the outside world.
This article is about the writer. For the passenger train service, see Carl Sandburg (train). Carl Sandburg (January 6, 1878 â July 22, 1967) was an American poet, writer, and editor who won three Pulitzer Prizes: two for his poetry and one for his biography of Abraham Lincoln.
The authority in this field is Thomas DiLorenzo. See in particular his books The Real Lincoln: A New Look at Abraham Lincoln, His Agenda, and an Unnecessary War, Prima Lifestyles, 2002, and Lincoln Unmasked: What Youre Not Supposed to Know About Dishonest Abe, 2006, and short articles.