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GLOSSARY
GL-3
AWG
bandwidth
baud
bit rate
bits per second
(bps)
B8ZS
B-channel
B-channel cut-
through
BCCOS
BCCOS —
unknown
analog
BCCOS —
unknown digital
bearer
capability
bearer
capability class
(BCC)
bearer
capability class
of service
(BCCOS)
bearer-
capability
routing
See American Wire Gauge.
The difference, expressed in hertz, between the highest and lowest frequencies in
a range of frequencies that determine channel capacity.
In telecommunications applications, a unit of transmission speed equal to the
number of signal events per second. See also bit rate and bits per second.
The speed at which bits are transmitted, usually expressed in bits per second.
Also called data rate. See also baud and bits per second.
The number of binary units of information that are transmitted or received per
second. See also baud and bit rate.
See bipolar with 8-zero substitution.
For an Integrated Services Digital Network (ISDN), a 64K-bps channel
accompanied by timing that is intended to carry a wide variety of digital
information streams, such as voice at 64K-bps, data at up to 64K-bps, wideband
voice encoded at 64K-bps, and voice at less than 64K-bps, alone or combined
with other digital information streams.
Also called bearer channel. See also D-
channel and B-channel cut-through.
The side, either user or network, of the Integrated Services Digital Network basic
rate interface (ISDN-BRI) that the specified B-channel uses to transfer voice or
data information. See also B-channel.
See bearer capability class of service.
An incoming call that is assumed by the communications system to be either
voice or voice-grade data.
An incoming call that is assumed by the communications system to be either
mode 0, mode 1, mode 2, or mode 3.
A term used with Integrated Services Digital Networks (ISDNs) to identify the
kinds of service that are requested or are available for a call. See also bearer-
capability class.
A term used with Integrated Services Digital Networks (ISDNs) to identify the
kind of trunk service required for a call. See also bearer capability and bearer-
capability routing.
A term used with Integrated Services Digital Networks (ISDNs) to identify a
number that specifies call routing requirements transmitted within the bearer
capability (BC) information element (IE). All line ports, each trunk group, and
all Automatic Alternate Routing/Automatic Route selection (AAR/ARS)
preferences have individual BCCOS number assignments. The same BCCOS
number may be shared by lines, trunk groups, and AAR/ARS preferences. See
also bearer capability and class of service.
A method provided by bearer-capability classes (BCCs) for specialized routing of
various trunk services using Integrated Services Digital Network primary rate
interface (ISDN-PRI) and non-ISDN endpoints. See also bearer-capability
class.