elements for the low-speed circuit to which the cross-connection belongs. This
information is used to prevent traffic misconnection in rings that have isolated network
elements or segments. See also Cross-Connect Map.
SSM
Synchronization Status Marker
Standby
The operational mode of a physical entity that indicates that the entity is not providing
service, but standby. This designation changes with each switch action.
Standby
The operational mode of a physical entity that indicates that the entity is not providing
service but is on standby. This designation will change with each switch action.
Station Clock Input (SCI)
An external clock may be connected to a Station Clock Input.
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 OMS 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.
Glossary
...................................................................................................................................................................................................................................
GL-28
Lucent Technologies - Proprietary
See notice on first page
365-312-847R4.0
Issue 4, November 2006
