Glossary:

ATIS Telecom Glossary

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Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

rekeying

The changing of one or more keys that are used for either COMSEC or TRANSEC functions.

relational database

A database that consists of data in simple tables (i.e., rows and columns) and that has no system dependencies (e.g., pointers to other data).

relative address

In computer and data processing programming, an address that is expressed as a difference in relation to a base address. [After Weik '96]

relative error

The ratio of an absolute error to the true, specified, or theoretically correct value of the quantity that is in error.

relative transmission level

The ratio of the signal power, at a given point in a transmission system, to a reference signal power.
Note: The ratio is usually determined by applying a standard test tone at zero transmission level point (or applying adjusted test tone power at any other point) and measuring the gain or loss to the location of interest. A distinction should… (Read More →)

relay

1. To retransmit a received message from one station to another station.
2. An electromechanical or semiconductor switch (i.e., solid-state relay) in which a current or voltage applied across one port or terminal controls electrical currents or voltages that appear across another terminal or terminals.

relay configuration

An operating configuration in which a circuit is established between two stations via an intermediate relay station. Two links are used simultaneously and the channel connections at the relay station are accomplished completely within the station.

relay station

1. An intermediate station that passes information between terminals or other relay stations.
2. A fixed station used for the reception and retransmission of the signals of another station or stations. [47CFR]

release node

The initial destination of a call from a pivot node.
Note: A service or network capability provided at the release node, after determining the call should be connected to a destination node other than itself, may invoke RTP (registration request protocol) to have the new connection established from a pivot node earlier in the call path. After releasing the call… (Read More →)

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