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.

buffer

1. A routine or storage medium used to compensate for a difference in rate of flow of data, or time of occurrence of events, when transferring data from one device to another.
Note: Buffers are used for many purposes, such as (a) interconnecting two digital circuits operating at different rates, (b) holding data for use at a later time, (c)… (Read More →)

buffer overflow

Common coding style is to never allocate large enough buffers, and to not check for overflows. When such buffers overflow, the executing program (daemon or set-uid program) can be tricked in doing some other things. Generally this works by overwriting a function's return address on the stack to point to another location.

bug

1. A concealed microphone or listening device or other audiosurveillance device. [JP 1-02]
2. A mistake in a computer program.
3. To install means for audiosurveillance. [JP 1-02]
4. A semiautomatic telegraph key.
5. A mistake or malfunction.

build-out delay

The maximum variable transmission and processing delay that is permitted in a wideband network. Each PVP (packetized voice protocol) node records the delay that it adds and updates accordingly the TS (time stamp) value in the packet header. When the terminating endpoint of a PVP node receives a voice packet, the provisioned build-out and the time stamp value are compared.… (Read More →)

building out

The process of adding a combination of inductance, capacitance, and resistance to a cable pair so that its electrical length may be increased by a desired amount to control impedance and loss characteristics. Synonym line buildout.

bulk encryption

Simultaneous encryption of all channels of a multichannel telecommunications link. [INFOSEC]
Note: A single encryption device can be used to encrypt the output signal from a multiplexer.

bulletin board

A form of electronic messaging in which addressed messages or files are entered by users into a computer or network of computers.
Note: Other users may obtain, at their convenience and request, messages or files available to them. Synonymelectronic bulletin board.

bundle

1. A group of optical fibers or electrical conductors, such as wires and coaxial cables, usually in a single jacket.
Note: Multiple bundles of optical fibers or electrical conductors may be placed in the same cable. [After 2196]
2. In cryptography, the three cryptographic keys (K1, K2, K3) used with a TDEA mode. [After X9.52] [After X9.65]

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