Area codes 514, 438, and 263
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Direct distance dialing
Northwestel
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Telephone numbers in South Africa
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Area codes 714 and 657
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Long-distance calling
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Andrelândia
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Traffic Service Position System
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Presidente Prudente
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São Mateus, Espírito Santo
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Area code 867
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Ourinhos
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Montes Claros
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Hortolândia
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Bauru
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Area codes 415 and 628
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Routing in the PSTN
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Fundão, Espírito Santo
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Vila Velha
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Switchboard operator
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Uberlândia
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United States presidential nominating convention
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Timeline of the telephone
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Multi-frequency signaling
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Subscriber trunk dialling
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Operator assistance
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Index of electronics articles
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North American Numbering Plan
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DDD
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Payphone
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Englewood, New Jersey
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1951
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Telephone switchboard
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Rotary dial
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East Germany
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Bell Labs
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Direct Distance Dialing
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