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Synchronization of Digital Telecommunications Networks by Stefano Bregni

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ABBREVIATIONS

A

AAL ATM Adaptation Layer
AC Alternated Current
ADEV Allan Deviation
ADM-N Add-Drop Multiplexer of level N
AIS Alarm Indication Signal
AM Amplitude Modulation
AMI Alternate Mark Inversion
ANSI American National Standard Institute
APLL Analog Phase-Locked Loop
APS Automatic Protection Switching
AS Anti-Spoofing
AT&T American Telephone and Telegraph Co.
ATM Asynchronous Transfer Mode
AUG Administrative Unit Group
AU-n Administrative Unit of level n
AVAR Allan Variance

B

B3ZS Bipolar with 3 Zeroes Substitution
B6ZS Bipolar with 6 Zeroes Substitution
B8ZS Bipolar with 8 Zeroes Substitution
BC Before Christ
BELLCORE BELL COmmunications REsearch
BER Bit Error Rate
BIP Bit Interleaved Parity
B-ISDN Broadband Integrated Services Digital Network
BITS Building Integrated Timing Supply
BOC Bell Operating Company
BPSK Binary Phase Shift Keying
BSC Base Station Controller
BSFR Basic Synchronization Reference Frequency
BTS Base Transceiver Station
BVA Boîtier à Vieillisement Amélioré (packaging for improved ageing performance)

C

C/A Coarse/Acquisition (code)
CBR Constant Bit Rate
CC Composite Clock
CCITT Comité Consultatif International de Téléphonie et Télégraphie
CD Compact Disc
CDM Code Division Multiplexing
CDMA Code Division Multiple Access
CDN Circuiti Diretti Numerici (Direct Digital Circuits)
CDU Clock Distribution Unit
CEP Circular Error Probable
CKi Clock number i out of a chain ...

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