SGlossary
B-72 Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
SS7
Signal System Number 7: A family of signaling protocols originating from
narrowband telephony. They are used to set-up, manage and tear down connections
as well as to exchange non-connection associated information. Refer to BISUP,
MTP, SCCP and TCAP.
STC
System Time Clock: The master clock in an MPEG-2 encoder or decoder system.
STE
Spanning Tree Explorer: A Source Route Bridging frame which uses the Spanning
Tree algorithm in determining a route.
STE
SONET Section Terminating Equipment: SONET equipment that terminates a
section of a link between a transmitter and repeater, repeater and repeater, or
repeater and receiver. This is usually implemented i n wide area facilities and not
implemented by SONET Lite.
STM
Synchronous Transfer Module: STM is a basic building block used for a
synchronous multiplexing hierarchy defined by the CCITT/ITU-T. STM-1 operates
at a rate of 155.52 Mbps (same as STS-3).
STM-1
Synchronous Transport Module 1: SDH standard for transmission over OC-3
optical fiber at 155.52 Mbps.
STM-n
Synchronous Transport Module “n:” (where n is an integer) SDH standards for
transmission over optical fiber (OC-'n x 3) by multiplexing "n" STM-1 frames,
(e.g., STM-4 at 622.08 Mbps and STM-16 at 2.488 Gbps).
STM-nc
Synchronous Transport Module "n" concatenated: (where n is an integer) SDH
standards for transmission over optical fiber (OC-'n x 3) by multiplexing "n" STM-
1 frames, (e.g., STM-4 at 622.08 Mbps and STM-16 at 2.488 Gbps, but treating the
information fields as a single concatenated payload).