Alcatel-Lucent 1643 AMS User's Operation Manual page 698

Glossary
MSOH
Multiplex Section Overhead. Part of the SOH (Section Overhead). Is accessible only at
line terminals and multiplexers.
MSP
Multiplex Section Protection. Provides capability of switching a signal from a working
to a protection section.
MTBF
Mean Time Between Failures
MTBMA
Mean Time Between Maintenance Activities
MTIE
Maximum Time Interval Error
MTPI
Multiplexer Timing Physical Interface
MTTR
Mean Time To Repair
Multiplexer Section OverHead (MSOH)
Part of the Section Overhead. Is accessible only at line terminals and multiplexers.
Multiplexer Section Protection (MSP)
Provides capability of switching a signal from a working to a protection section.
Multiplexer Section Shared Protection Ring (MS-SPRING)
A protection method used in multiplex line systems.
Multiplexer Section Termination (MST)
Function that generates the Multiplexer Section Overhead in the transmit direction and
terminates the Multiplexer Section Overhead in the receive direction.
Multiplexer Timing Source (MTS)
Function that provides the timing reference to the relevant component parts of the
multiplex equipment and represents the SDH network element clock.
Multiplexing
A procedure by which multiple lower order path layer signals are adapted into a higher
order path, or by which the multiple higher order path layer signals are adapted into a
multiplex section.
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N NE
Network element. The NE is comprised of telecommunication equipment (or groups/parts
of telecommunication equipment) and support equipment that performs network element
functions. A Network Element has one or more standard Q-type interfaces.
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GL-18 Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007