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.

DTR

Data Terminal Ready

DTV

Digital Television

dual access

1. The connection of a user to two switching centers by separate access lines using a single message routing indicator or telephone number.
2. In satellite communications, the transmission of two carriers simultaneously through a single communication satellite repeater.

dual bus

A pair of parallel buses arranged such that the direction of data flow in one bus is opposite to the direction of data flow in the other bus.

dual control

In security systems, a process of using two or more separate individuals (or entities), operating together (but with split knowledge) to protect sensitive functions or information so that no single person is able to access or use the materials (such as a cryptographic key). [After X9.49]

dual diversity

The simultaneous combining of (or selection from) two independently fading signals, so that the resultant signal can be detected through the use of space, frequency, angle, time, or polarization characteristics.

dual homing

The connection of a terminal so that it is served by either of two switching centers.
Note: In dual homing, a single directory number or a single routing indicator is used.

dual in-line package (DIP)

An electronic package with a rectangular housing and a row of pins along each of two opposite sides.
Note: DIP packages may be used for integrated circuits, or for discrete components, such as resistors or toggle switches. An example of a DIP is a microcircuit package with two rows of seven vertical leads that is specially designed for mounting on… (Read More →)

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