Lucent Technologies LambdaUnite Installation Manual page 340

MST (Multiplexer Section Termination)
Function that generates the Multiplexer Section OverHead in the transmit direction and
terminates the part of the Multiplexer Section overhead that is acceptable in the receive
direction.
MTBF
Mean Time Between Failures
MTBMA
Mean Time Between Maintenance Activities
MTIE
Maximum Time Interval Error
MTPI
Multiplexer Timing Physical Interface
MTS (Multiplexer Timing Source)
Function that provides timing reference to the relevant component parts of the multiplex
equipment and represents the SDH Network Element clock.
MTTR
Mean Time To Repair
Multiplexer
A device (circuit pack) that combines two or more transmission signals into a combined signal
on a shared medium.
Multiplexing
A procedure by which multiple lower order path layer signals are adapted into a higher order
path, or the multiple higher order path layer signals are adapted into a multiplex section.
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N NA
Not Applicable
Navis Optical NMS
Optical Network Management System
NE (Network Element)
A node in a telecommunication network that supports network transport services and is directly
manageable by a management system.
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G L O S S A R Y
G L - 2 4
Lucent Technologies 365-374-059
Issue a, January 2002