Digium TDM400P, Руководство пользователя

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Appendix E: Glossary and Acronyms
RJ11
A six pin jack typically used for connecting telephones, modems, and fax
machines in residential and business settings to PBX or the local
telephone CO.
SIP Session Initiation Protocol
An IETF proposed standard for setting up sessions between one or more
clients. It is currently the leading signaling protocol for Voice over IP,
gradually replacing H.323.
T1
A dedicated digital carrier facility which transmits up to 24 voice
channels (DS0s) and transmits data at 1.544 Mbps. Commonly used to
carry traffic to and from private business networks and ISPs.
T3
A dedicated digital carrier facility which consists of 28 T1 lines and
transmits data at 44.736 Mbps. Equivalent to 672 voice channels (DS0s).
TDM time division multiplexer
A device that supports simultaneous transmission of multiple data streams
into a single high-speed data stream. TDM separates signals by
interleaving bits one after the other.
telco
A generic name which refers to the telephone companies throughout the
world, including RBOCs, LECs, and PTTs.