Terminology - AT&T MERLIN LEGEND Release 2.0 Data User's Manual

About Data Communication Equipment
responsible for administering and managing your
communications system.

Terminology

General terms used in describing data transfer in this guide
are defined as follows.
asynchronous data transmission — A method of transmitting
a short bit stream of data, such as printable characters
represented by a 7- or 8-bit ASCII code. Each string of data
bits is preceded by a start bit and followed by a stop bit, thus
permitting data to be transmitted at irregular intervals.
control unit — The housing, carriers, power supply module,
processor module, and line/trunk and station modules of a
communications system.
conversion resource (or modem pool) — A pair, or group of
pairs, of modems and data modules with interconnected RS-
232 interfaces that converts digital signals to analog, or
analog signals to digital, thereby allowing users with digital
data stations to communicate with users who have analog
data stations and vice versa.
data hunt group (DHG) — A group of analog or digital data
stations that share a common access code. Calls are
connected in a round-robin fashion to the first available data
station in the group.
Terminology
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