SVCE
Service
Synchronization Supply Unit (SSU)
A circuit pack that recovers and reshapes the clock signal in order to filter out jitter.
Local (SSU_L) and Transit (SSU_T) types are available.
Synchronous
The essential characteristic of time-scales or signals such that their corresponding
significant instants occur at precisely the same average rate.
Synchronous Digital Hierarchy (SDH)
A hierarchical set of digital transport structures that is standardized for the transport of
suitably adapted payloads over transmission networks.
Synchronous Equipment Management Function (SEMF)
Function that converts performance data and implementation-specific hardware alarms
into object-oriented messages for transmission over the DCC and/or the Q-interface. The
SEMF also converts object-oriented messages that are related to other management
functions so that they can pass across the S reference points.
Synchronous Line Multiplexer (SLM)
A line multiplexer that is designed to multiplex VC-4 and STM-1 tributary port signals
into STM-16 line port signals.
Synchronous Network
The synchronization of synchronous transmission systems with synchronous payloads to
a master Network clock that can be traced to a single reference clock.
Synchronous Transport Module (STM)
The information structure that is used to support (section layer) connections in SDH.
System Administrator
A user of the computer system on which the NMS application can be installed. See also
User Privilege.
System Controller (CTL)
ISM circuit pack that controls the configuration of an Intelligent Synchronous
Multiplexer system.
System Controller (SC)
A circuit pack that controls and provisions all units. It also contains the data
communication packet switch functionality that is necessary for routing of management
information between network elements and their management system.
System Controller (STC)
SLM Add-Drop Multiplexer network element circuit pack that provides the highest level
of system control for the Synchronous Line Multiplexer system. The STC circuit pack
provides overall administrative control of the system. The STC memory is provided by
the MEM circuit pack.
Glossary
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365-312-847R4.0
Issue 4, November 2006
Lucent Technologies - Proprietary
See notice on first page
GL-29