direct-dialing service

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• Direct inward dialing — (DID), also called direct dial in (DDI) in Europe and Oceania, is a feature offered by telephone companies for use with their customers private branch exchange (PBX) systems. In DID service the telephone company provides one or more trunk lines… …   Wikipedia

• 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 Inward Dialing — (DID), also called Direct Dial In (DDI) in Europe, is a feature offered by telephone companies for use with their customers PBX systems, whereby the telephone company (telco) allocates a range of numbers all connected to their customer s PBX. As… …   Wikipedia

• direct distance dialing — noun : the dialing of a telephone number outside the local calling area by using initial code numbers to make a direct connection abbr. DDD * * * a telephone network service feature enabling customers to direct dial their long distance calls. * * …   Useful english dictionary

• direct distance dialing — a telephone network service feature enabling customers to direct dial their long distance calls. * * * …   Universalium

• Direct Inward Dialing — telephone service in which a company receives a block of telephone numbers that can be accessed via a small number of actual telephone lines (enables private extensions without requiring extra lines …   English contemporary dictionary

• Improved Mobile Telephone Service — The Improved Mobile Telephone Service (IMTS) is a 0G pre cellular VHF/UHF radio system that links to the PSTN. IMTS was the radiotelephone equivalent of land dial phone service. It was introduced in 1969 as a replacement to Mobile Telephone… …   Wikipedia

• Plain old telephone service — (POTS) is the voice grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world. The name is a reflection of the telephone service still available… …   Wikipedia

• Satcom Direct — is a company located in the United States that provides global satellite communications. The company is perhaps best known in providing global satellite communications to aeronautical users, business and general aviation, military, government,… …   Wikipedia

• Pulse dialing — Middle 20th century rotary dial telephone Pulse dialing, dial pulse, or loop disconnect dialing, also called rotary or decadic dialling in the United Kingdom (because up to 10 pulses are sent), is pulsing in which a direct current pulse train is… …   Wikipedia

• Global Dialing Scheme — The Global Dialing Scheme (GDS) is numbering plan for H.323 networks. Based on the numerology provided by the United Nations International Telecommunications Union, GDS numerology resembles the international telephone system numbering plan, with… …   Wikipedia