DEFINITIONS

ASYNCHRONOUS TRANSFER MODE

CENTRAL PROCESSING UNIT

DIGITAL SIGNAL 0 AT A RATE OF 64 KBIT/S = 1 PHONE CALL

DIGITAL SIGNAL LEVEL 3 T-CARRIER (ALSO CALLED T3) = 28 DS1 CHANNELS

2-PORT

EAR AND MOUTH SIGNALING

A EUROPEAN DIGITAL TRANSMISSION FORMAT EQUIVALENT TO THE N. AMERICAN T-CARRIER SYSTEM

EUROPEAN DIGITAL TRANSMISSION FORMAT LEVEL 3 EQUIVALENT TO N. AMERICAN T3

EMERGENCY STANDALONE

FERRULE CONNECTOR, FIBER CONNECTOR WITH SCREW-ON COUPLING, BECOMING LESS COMMON

FAX LINE/TIC

FOREIGN EXCHANGE OFFICE, RJ-11 CONNECTION TO PSTN CO OR PBX INTERFACE

GIGABIT

GIGABIT INTERFACE CONVERTER

HIGH-SPEED

INTEGRATED SERVICES DIGITAL NETWORK

LOCAL AREA NETWORK

MESSAGE BUFFER

MULTI-MODE

MULTI-MODE FIBER

MAGNETO OPTICAL DISK DEVICE

OPTICAL CARRIER LEVEL 12 UP TO 622MBIT/S, SONET EQUIVALENT TO SDH STM-4

OPTICAL CARRIER LEVEL 3 UP TO 155MBIT/S, SONET EQUIVALENT TO SDH STM-1

STANDARD CONNECTOR, FIBER CONNECTOR WITH SQUARE SNAP COUPLING (PUSH-PULL)

SYNCHRONOUS DIGITAL HIERARCHY, USED OUTSIDE THE U.S. AND CANADA

SMALL FORM-FACTOR PLUGGABLE GBIC, A HOT-PLUGGABLE OPTICAL TRANSCEIVER FOR SONET & ETHERNET

SINGLE-MODE

SYNCHRONOUS OPTICAL NETWORK, MULTIPLEXING PROTOCOL IN THE U.S. AND CANADA

SIGNALING SYSTEM 7

STRAIGHT TIP, FIBER CONNECTOR WITH ROUND BAYONET COUPLING

SYNCHRONOUS TRANSPORT MODULE LEVEL 1, BASIC UNIT OF FRAMING IN SDH

DIGITAL SIGNAL 1 (DS1, ALSO CALLED T1) IS A T-CARRIER SIGNAL DEVISED BY BELL LABS

DIGITAL SIGNAL LEVEL 3 T-CARRIER (ALSO CALLED DS3) = 28 DS1 CHANNELS

TEST ACCESS PACK

TRANSMITTER / RECEIVER

TRANSMITTER