Digium TE131, Руководство пользователя

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Appendix C: Glossary and Acronyms
telco
A generic name which refers to the telephone companies throughout the
world, including RBOCs, LECs, and PTTs.
tip and ring
The standard termination on the two conductors of a telephone circuit;
named after the physical appearance of the contact areas on the jack plug.
twisted pair
Two copper wires commonly used for telephony and data
communications. The wires are wrapped loosely around each other to
minimize radio frequency interference or interference from other pairs in
the same bundle.
V Volts
VoIP Voice over Internet Protocol
Technology used for transmitting voice traffic over a data network using
the Internet Protocol.
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