direct distance dialing system

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• 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… …   Wikipedia

• direct distance dialing —    Abbreviated DDD. Use of the normal long distance telephone system without the need for the intervention of an operator …   Dictionary of networking

• Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …   Wikipedia

• Number One Crossbar Switching System — The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid 20th century. Its switch fabric topology was based on the earlier urban panel switch system, which,… …   Wikipedia

• Signaling System No. 5 — CCITT5 [http://www.itu.int/rec/T REC Q.140 Q.180/en ITU T Recommendation Q.140 Q.180] Specifications of Signalling System No. 5] was a multi frequency (MF) telephone signalling system in use from the 1970s for International Direct Distance… …   Wikipedia

• direct-dial — /di rekt duy euhl, duyl , duy /, v.i., v.t. 1. to make a telephone call outside the local area without the assistance of an operator. adj. 2. being a telephone or telephone system enabling long distance calls to be direct dialed. 3. of or… …   Universalium

• direct-dial — /di rekt duy euhl, duyl , duy /, v.i., v.t. 1. to make a telephone call outside the local area without the assistance of an operator. adj. 2. being a telephone or telephone system enabling long distance calls to be direct dialed. 3. of or… …   Useful english dictionary

• Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …   Wikipedia

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• Mayor of Englewood, New Jersey — Mayors of Englewood, New Jersey. The terms begin on January 1 of the new year.[1][2] Frank Huttle III 2010 to present.[3] Michael Wildes 2004 to 2009. Paul T. Fader 1998 to 2003. Donald Aronson 1989 to 1987. In 1991 Wilson Pickett was arrested… …   Wikipedia

• ADDDS — Automatic Direct Distance Dialing System …   Acronyms