Glossary of Terms

 

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The telecommunications and fiber industries are full of terms and acronyms. Our glossary of terms attempts to capture some of them.

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R

Radio Frequency Over Glass (RFOG): An evolutionary technology that allows cable companies to offer an all-fiber architecture (not hybrid-fiber coax) without changing modulation schemes. RFoG is an SCTE Interface Practices Subcomittee standard in development for Point to Multipoint (P2MP) operations that has a proposed wavelength plan compatible with data PON solutions including EPON and 10G-EPON.

RBOC: See Regional Bell Operating Company.

RCS: See Regional Core Switch.

Regional Bell Operating Company (RBOC): Local exchange carriers formed after the breakup of AT&T in 1984. The seven regional holding companies (RHCs) of roughly equal size were formed as a result of the 1982 Consent Decree AT&T signed with the U.S. Department of Justice, stipulating that it would divest itself of its 22 wholly owned telephone operating companies. The seven RHCs were Ameritech, Bell Atlantic, BellSouth, NYNEX, Pacific Telesis, Southwestern Bell and US West. After a series of acquisitions, mergers and name changes (including one in which a combination of several RHCs reclaimed the original AT&T name), only three of the original seven remain. They are AT&T, CenturyLink, and Verizon. The RBOCs are the incumbent local exchange carriers (ILECs) in their local markets.

Regional Core Switch (RCS): The devices at the highest level of cascading aggregation.

Regional Tandem: A tandem switch is an intermediate switch or connection between an originating telephone call or location and the final destination of the call. These are hub facilities that interconnect telephone central office exchanges and are deployed by geographical region within a telco LATA or exchange.

Remote Terminal: Telephone communications equipment that is installed within the service area or "neighborhood" that traditionally aggregates and multiplexes telephone local loops and transmits the aggregated signals from the service area back to the telephone central office switch. This has evolved to become the "Node" within a service area in a fiber-to-the-node architecture.

RFOG: See Radio Frequency Over Glass.

Right of Way (ROW):

ROW: See Right of Way.

Rural Utility Services (RUS): The Rural Utility Services (RUS) is a division of the United Stated department of Agriculture (USDA). RUS has a division responsible for providing low interest loans to telecommunication network owners to deploy broadband technologies in rural areas.

RUS: See Rural Utility Services.


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