BIP
Bit Interleaved Parity
Bipolar 8-Zero Substitution (B8ZS)
A line coding technique that replaces eight consecutive zeros with a bit sequence having special
characteristics accomplishing two objectives: First, this bit sequence accommodates the density
requirements of the ones for digital T1 carrier; Second, the sequence is recognizable at the
destination (due to deliberate bipolar violations) and is removed to produce the original signal.
Bit
The smallest unit of information in a computer, with a value of either 0 or 1.
Bit Error Rate (BER)
The ratio of error bits received to the total number of bits transmitted.
Bit Error Rate Threshold
The point at which an alarm is issued for bit errors.
Bit Interleaved Parity-N(BIP-N)
A method of error monitoring over a specified number of bits (BIP-3 or BIP-8).
BITS
Building Integrated Timing Supply
BITS clock
A BITS (Building Integrated Timing Source) clock is simply a clock within a central office that
distributes timing to all the equipment in that central office. The BITS clock is tied to an
external, stable timing source, such as a GPS (global positioning satellite).
Broadband
Any communications channel with greater bandwidth than a voice channel; sometimes used
synonomously with wideband.
Byte
Refers to a group of eight consecutive binary digits.
....................................................................................................................................................................................................................................
C
CCITT
Comité Consultatif International Télégrafique & Téléphonique
(International Telephone and Telegraph Consultative Committee)
CCITT - International Telephone and Telegraph Consultative Committee
An international advisory committee under United Nations’ sponsorship that has composed and
recommended for adoption worldwide standards for international communications. Recently
changed to the International Telecommunications Union Telecommunications Standards Sector
....................................................................................................................................................................................................................................
G L O S S A R Y
G L - 4
Lucent Technologies
365-372-333 R2.1
Issue 4, June 2005