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Direct Distance Dialing Jesse Russell

Direct Distance Dialing

Jesse Russell

Published June 14th 2012
ISBN : 9785510698497
Paperback
136 pages
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 About the Book 

High Quality Content by WIKIPEDIA articles! Direct distance dialing (DDD) or direct dial is a telecommunications term for a network-provided service feature in which a call originator may, without operator assistance, call any other user outside theMoreHigh Quality Content by WIKIPEDIA articles! Direct distance dialing (DDD) or direct dial is a telecommunications term for a network-provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. DDD requires more digits in the number dialed than are required for calling within the local area or area code. DDD also extends beyond the boundaries of national public telephone network, in which case it is called international direct dialing or international direct distance dialing (IDDD).