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  2. Houston Cellular - Wikipedia

    en.wikipedia.org/wiki/Houston_Cellular

    Houston Cellular was a Houston-based cell phone company which provided AMPS and D-AMPS (TDMA) service in the Greater Houston area. It was formed in 1983 and was operated as a partnership between LIN Broadcasting Corp., Mobile Communication Corp. of America and BellSouth Co. [1] Its headquarters were located in Houston, Texas.

  3. Crown Castle - Wikipedia

    en.wikipedia.org/wiki/Crown_Castle

    Crown Castle Inc. is a real estate investment trust and provider of shared communications infrastructure in the United States headquartered in Houston, Texas.Operating with 100 offices worldwide, its network includes over 40,000 cell towers and approximately 85,000 route miles of fiber supporting small cells and fiber systems.

  4. 10 Phone Systems for Small Businesses - AOL

    www.aol.com/10-phone-systems-small-businesses...

    8x8's cloud-based phone system offers phone number support in over 100 countries, allowing small businesses to establish a presence with local numbers even if they don't have a physical office in ...

  5. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  6. Harris Corporation - Wikipedia

    en.wikipedia.org/wiki/Harris_Corporation

    Harris Corporation was an American technology company, defense contractor, and information technology services provider that produced wireless equipment, tactical radios, electronic systems, night vision equipment and both terrestrial and spaceborne antennas for use in the government, defense, emergency service, and commercial sectors.

  7. Telephone switchboard - Wikipedia

    en.wikipedia.org/wiki/Telephone_switchboard

    PBX switchboard, 1975. A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.

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