DEFINITIONS

UNIVERSAL MODULAR CARRIER; ALSO UMC1000

ASYMMETRIC DIGITAL SUBSCRIBER LINE, 8 MBIT/S DOWN, 1.0 MBIT/S UP

ASYMMETRIC DIGITAL SUBSCRIBER LINE, 12 MBIT/S DOWN, 1.0 MBIT/S UP

ASYMMETRIC DIGITAL SUBSCRIBER LINE, 24 MBIT/S DOWN, 1.0 MBIT/S UP

CONTROLLER CARD

CENTRAL PROCESSING UNIT

CONTROL/CHANNEL UNIT

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

EAR AND MOUTH SIGNALING

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

EXPANSION BANK CONTROL

GIGABIT ETHERNET

HIGH-DENSITY

HIGH BIT RATE DIGITAL SUBSCRIBER LINE (4-WIRE)

INTERFACE

INTERMEDIATE REACH

LINE EQUIPMENT TRANSFER

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

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

OPTICAL NETWORK TERMINAL

PASSIVE OPTICAL NETWORK

PLAIN OLD TELEPHONE SERVICE

REMOTE EQUIPMENT MODULE

REMOTE SUBSCRIBER TERMINAL

SINGLE-MODE

SYNCHRONOUS TRANSPORT SIGNAL

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

TRANSMITTER / RECEIVER

UNIVERSAL VOICE GRADE