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Abbreviations 65
OnSite Series Getting Started Guide C • Terms and Acronyms
Abbreviations
Abbreviation Meaning
A
AIS Alarm Indication Signal
AMI Alternate Mark Inversion
AU Administrative Unit
AUX Auxiliary (port)
B
BIP Bit Interleaved Parity
BBE Background Block Error
BER Bit Error Rate
BPV Bipolar Violation
B3ZS Bipolar with 3-zero Substitution
B8ZS Bipolar with 8-zero Substitution
C
cHEC core Header Error Check
CLI Command Line Interface
CSU/DSU Channel Service Unit/Data Service Unit
C-Tag Customer-assigned tag (for example, VLAN tag)
D
DNU Do Not Use (for synchronization)
E
E1 European digital signal hierarchy level 1
EB Errored Block
EDC Error Detection Code
EIA Electronics Industries Alliance
EOW Engineering Orderwire
ES Errored Second
ETSI European Telecommunications Standards Institute
EXM Extension Header Mismatch
EXZ Excessive Zeros
G
GFP Generic Framing Procedure
H
HDB3 High-Density Bipolar with 3-zero Substitution
HP High-order Path
HTTP Hyper Text Transfer Protocol
I
IP Internet Protocol