Alcatel-Lucent 1643 AMS User's Operation Manual page 709

Glossary
SNC/NI
SubNetwork Connection / Non Intrusive monitoring
SNR
Signal to Noise Ratio
Soft Windows
PC emulator package for HP platforms.
SOH
Section Overhead. Capacity added to either an AU-4 or to an assembly of AU-3s to
create an STM-1. Always contains STM-1 framing and can contain maintenance and
operational functions. SOH can be subdivided in MSOH (Multiplex Section OverHead)
and RSOH (Regenerator Section OverHead).
SONET
Synchronous Optical Network
Space Diversity (SD)
Reception of the Radio signal via mirror effects on Earth.
SPB2M
Subrack Protection for 2 Mbit/s Board
Specification and Design Language (SDL)
This is a standard formal language for specifying (essentially) finite state machines.
SPI
SDH Physical Interface Synchronous-Plesiochronous Interface
Squelch Map
Traffic map for SLM Add-Drop Multiplexer network elements that contains information
for each cross-connection in the ring and indicates the source and destination network
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.
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
GL-29