Zhone Technologies IMACS-200 manual B7R, B8ZS, Becn, Bert, Bes, Bri

B7R

Bit #7 Redundant

B7R port

A network port used to provide Network Management capability for the system.

B8ZS

Bipolar 8-Zero Substitution, a coding scheme that maintains minimum-ones density on a T1 line.

Baud Rate

A measure of transmission speed over an analog phone line

B-channel

In ISDN, a full-duplex, 64 kbps (“bearer”) channel that carries user data.

BECN

Backward Explicit Congestion Notification

BER

Bit Error Rate, the number of errored bits divided by the total number of bits.

BERT

Bit Error Rate Tester

BES

A Bursty Errored Second is any second with more than one and fewer than 320 CRC-6 (ESF), BPV (D4/D-frame), or CRC-4 (E1) errors

bit

Contraction of the words "binary" and "digit."

bps

Bits per second (not to be confused with Baud Rate)

BRI

Basic Rate Interface, (2B+D) in ISDN

Glossary -3