A record of all calls originated or received by a switching system.
Note: SMDRs are usually generated by a computer.

The term applied to the basis of toll rate making which contemplates that the message toll service charge (telephone or TWX) covers the use made of all facilities between the originating station and the terminating station, including the stations, and the services rendered in connection therewith. [47 CFR Pt.36-A]

See geostationary orbit.

Synonym standing wave.

Multiplexing in which channels are established on a statistical basis; i.e., connections are made according to probability of need.

Time-division multiplexing in which connections to communication circuits are made on a statistical basis.

A characteristic of a quantity such that, for an n-bit quantity, the probability of two values' repeating is less likely than or equal to the probability of two n-bit quantities' repeating at random. [After X9.62]

The bits of a link status signal unit that indicate one of the major signaling link states. [T1.226-1992]

A unit of distance equal to
1. 609 km (
0. 869 nmi, 5280 ft. ).

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