ADTRAN MX2820 System Manual page 463

Appendix A, Abbreviations and Acronyms
M
mA ....................................................... milli amperes
MBE..................................................... M-bit Errors
Mbps.................................................... Megabits per second
MIB ...................................................... Management Information Base
ms........................................................ Millisecond
MTU ..................................................... Multi-Tenant Unit
MUX..................................................... Multiplexer
N
NC........................................................ Normally Closed
NIU ...................................................... Network Interface Unit
NMS ..................................................... Network Management System
NO ....................................................... Normally Open
NRZ...................................................... Non-Return to Zero
NSA...................................................... Non-Service Affecting
O
OCU ..................................................... Office Channel Unit
OOF ..................................................... Out-of-Frame
OOS ..................................................... Out of Service
P
PCV...................................................... P-bit Coding Violation
PES ...................................................... P-bit Errored Seconds
pF ........................................................ pica Farad
POP...................................................... Point of Presence
PPP ...................................................... Point-to-Point Protocol
PSES .................................................... P-bit Severely Errored Seconds
PVC...................................................... Permanent Virtual Channel
R
RAI....................................................... Remote Alarm Indicator
RD ....................................................... Receive Data
RDL...................................................... Remote Digital Loopback
61186003L1-1D A-3