Stm-1, Stm-n, Stm-nc – Panasonic 1200N User Manual

Page 234

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S

Glossary

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 in 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).

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