
38
Installation and Commissioning Manual
F
S
P
3000R
7 R
11
.1 8000
0015930
Issue
B
, ©
2012
ADVA AG Optical Netw
orking
ADVA Conf
idential
mm
millimeter (SI derived unit of length in the metric system)
mm
2
square millimeter (unit of area, derived from the SI base unit of the meter)
MAC
Media Access Control
MAN
metropolitan area network
max.
maximum
Mbit/s
megabits per second (a unit of data transfer rates equal to 1.000.000 bits
per second)
MEA
mismatch equipment alarm
mi
mile, miles (a unit of length)
MIB
management information base
min.
minimum
µm
micrometer or micron (SI unit of length in the metric system, equal to one
millionth of a meter, which is one-thousandth of a millimeter)
ms
millisecond (SI unit of time which is one thousandth of a second)
MU/PC
Type of fiber-optic connector with physical contact
MUX
(1) multiplexer
(2) multiplexing
mW
milliwatt (SI derived unit for measuring power)
N
N
neutral conductor
n. c.
not connected
NCU
Network Control Unit (collective name)
NCU (NCU2E type)
Network Element Control Unit with two Ethernet ports
NCU-II
network element control unit with high performance processor and two
Ethernet ports; does not include RTU licence
NCU-A
Network Control Unit; does not include RTU licence; supports CWDM
and access type channel modules only
NCU-B
Network Control Unit, includes RTU licence; supports both CWDM and
DWDM using access and core type channel modules
NCU-GDPS
Network Control Unit-Generic Data Package Service; includes RTU
licence; supports both CWDM and DWDM using access, core and
enterprise type channel modules
NE
network element
NEBS
Network Equipment Building Standards
NEC
United States National Electrical Code
NEMA
National Electrical Manufacturers Association
NFPA
National Fire Protection Association
nm
nanometer (SI derived unit of length in the metric system, equal to one
billionth of a meter)
NMS
Network Management System
NP
Network Planner
NTP
Network Time Protocol