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Direct-distance dialing (DDD) was first introduced in areas with common-control switching (panel and crossbar) in the 1950s.These areas had used 411 for directory assistance, and because of the ability of common-control switching to analyze the initial digits of a number in a "sender" before routing the call, these areas did not require the dialing of an initial 1 to initiate a long-distance call.
The operator would ask what number the subscriber was attempting to call, determine the reason for the intercept and relay the information to the calling party. [ 1 ] The first automatic intercept systems used rotating magnetic drums containing multiple recorded phrases, with a computer or mechanical control system playing phrases in the proper ...
"Memphis, Tennessee", sometimes shortened to "Memphis", is a song by Chuck Berry, first released in 1959. In the UK, the song charted at number 6 in 1963; at the same time Decca Records issued a cover version in the UK by Dave Berry and the Cruisers , which also became a UK Top 20 hit single.
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Toll restriction or toll denial is a telephony feature offered by a telephone company that configures a telephone line to be configured so that it is impossible to originate long-distance calls from that line, or to accept charges reversed to the telephone number by other parties. Such lines usually allow calls to be made to no-charge numbers ...
A third number call or third party call is an operator assisted telephone call that can be billed to the party other than the calling and called party. The operator calls the third number for the party to accept the charges before the call can proceed. Time and charges was a service that could be requested of an operator before a call began ...
Local calling had been increasingly automated through the first half of the 20th century, but long-distance calling still required operator intervention. Automation was deemed essential by AT&T . By the 1940s they had developed a system that used audible tones played over the long-distance lines to control network connections.
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