The date the transfer entry to an account is considered effective; either the day the instruction is received or some future date as stipulated by the originator. [After X9.9]

A company that sells the services of a value-added network.

A network using the communication services of other commercial carriers, using hardware and software that permit enhanced telecommunication services to be offered.

Acronym for value-added network.

Volt-ampere reactive.

A buffer into which data may be entered at one rate and removed at another rate without changing the data sequence.
Note: Most first-in first-out (FIFO) storage devices are variable-length buffers in that the input rate may be variable while the output rate is constant or the output rate may be variable while the input rate is constant. Various clocking… (Read More →)

See continuously variable slope delta modulation.

In statistics, in a population of samples, the mean of the squares of the differences between the respective samples and their mean, expressed mathematically as: where n is the number of samples, xi is the value of sample i, is the mean of the samples, and 2 is the variance.
Note: The square root of the variance, , is the… (Read More →)

1. One of two or more code symbols having the same plain text equivalent. [INFOSEC-99]
2. One of several plain text meanings that are represented by a single code group. [JP1]

A new key formed by a nonsecret process with the original key, such that one or more of the nonparity bits of the new key differ from the corresponding bits of the original key. [After X9.8]