Alcatel-Lucent 1643 AMS User's Operation Manual page 710

Glossary
Station Clock Output (SCO)
A clock signal that can be used for other systems.
STM
Synchronous Transport Module Building block of SDH.
STM
Synchronous Transport Module building block of SDH
STP
Spanning Tree Protocol
Stretched Ring (STRING)
An open ring in which each node is an Add-Drop Multiplexer. The end nodes operate
with one equipped high-speed line.
STS
Synchronous Transport Signal; used in SONET.
STVRP
Spanning Tree with VPN Registration Protocol
Subnetwork
A group of interconnected/interrelated network elements. The most common connotation
is an SDH network in which the network elements have Data Communications Channels
(DCC) connectivity.
Supervisor
A user of the ITM-SC application with Supervisor privileges. See also User Privilege.
Supervisory Unit (SU)
Radio Relay circuit pack that gives comprehensive supervision and control facilities to
the user by collecting information from the Alarm Collection Units and Alarm Adapter
Units.
SVCE
Service
Switch Receive Unit (SWR)
SLM circuit pack that provides the cross-connect in the receive direction between high
speed line time slots and low speed tributaries.
Switch Transmit Unit (SWT)
SLM circuit pack that provides the cross-connect in the transmit direction between high
speed line time slots and low speed tributaries.
Switching Module (SM)
An access module from the 5ESS switch.
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.
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GL-30 Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007