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2. T-carrier - Wikipedia

   en.wikipedia.org/wiki/T-carrier

   The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission with the D1 channel bank.

3. Camp Chase Railway - Wikipedia

   en.wikipedia.org/wiki/Camp_Chase_Railway

   The Ohio State Limited ran daily along the line with stops in Lilly Chapel, Georgesville, Galloway, and Columbus. [3] The Ohio State Limited ceased service on the line in the 1960s. The Penn Central Transportation Company shifted traffic to the ex- Pennsylvania Railroad line between Columbus and London, and the portion of the old Big Four line ...

4. List of COTA routes and services - Wikipedia

   en.wikipedia.org/wiki/List_of_COTA_routes_and...

   The Central Ohio Transit Authority (COTA) operates 41 fixed-route bus services throughout the Columbus metropolitan area in Central Ohio.The agency operates its standard and frequent bus services seven days per week, and rush hour service Monday to Friday. [1]

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6. Telephone line - Wikipedia

   en.wikipedia.org/wiki/Telephone_line

   In most cases, two copper wires (tip and ring) for each telephone line run from a home or other small building to a local telephone exchange. There is a central junction box for the building where the wires that go to telephone jacks throughout the building and wires that go to the exchange meet and can be connected in different configurations ...

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