The poem, which offers a glimpse into colonial Philadelphia in 1729, is attributed to Breintnall, though the narrative persona of The Busy Body only names the author of the poem as "a Friend.
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The Busy override function was originally intended to allow the called party to receive a high priority, implying that the call is very important, and should be handled first.
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He was nicknamed Busy Signal by his friends because of the fact that he is constantly busy.
"Wikipedia"