Lucent Technologies 8.2 User Manual

Issue 1

April 2000

Glossary and abbreviations 

1619

 

See 

Bearer capability class (BCC)

.

Basic Call Management System

See 

business communications terminal (BCT)

.

Code that identifies the type of a call (for example, voice and different types of data). Determination of BCC 
is based on the caller’s characteristics for non-ISDN endpoints and on the Bearer Capability and Low-Layer 
Compatibility Information Elements of an ISDN endpoint. Current BCCs are 0 (voice-grade data and voice), 
1 (DMI mode 1, 56 kbps data transmission), 2 (DMI mode 2, synchronous/asynchronous data transmission up 
to 19.2 kbps) 3 (DMI mode 3, 64 kbps circuit/packet data transmission), 4 (DMI mode 0, 64 kbps synchro-
nous data), 5 (temporary signaling connection, and 6 (wideband call, 128–1984 kbps synchronous data).

Bit error rate

Busy-hour call completions

One unit of information in binary notation, having two possible values: 0 or 1.

The number of binary units of information that are transmitted or received per second. See also 

baud

 and

.

The speed at which bits are transmitted, usually expressed in bits per second. Also called data rate. See also 

baud

 and 

bits per second (bps)

.

Busy Lamp Field

Billing number

Bit-oriented signaling

Billed-party number

See 

bits per second (bps)

.

The appearance of a voice terminal’s extension at one or more other voice terminals.

The ISDN Basic Rate Interface specification.

A call appearance on a voice terminal that matches a call appearance on another voice terminal for the dura-
tion of a call.