Verilink AS2000: The Basics (880-502981-001) Product Manual Manual do Utilizador descarregar pdf (Página 166)

Acronyms and Definitions

Glossary-46 Verilink Access System 2000: Basics

T1 Digital signal level 1. A 24

channel, 1.544 Mbit/s digital line

used for voice and/or data

transmission. T1 uses two

twisted-pair conductors providing

full duplex transmission.

T3 Digital signal level 3. A digital line

that can carry up to 28 T1

channels and operate at 44.736

Mbit/s. Also known as DS3.

TA Terminal Adapter—An

ISDN

customer premises equipment

(CPE)

which provides pre-ISDN

devices with standard non-ISDN

interfaces, such as tip and ring or

RS-232, to be connected to a BRI or

PRI access line. The terminal

adapter performs signalling

conversion so non-ISDN equipment

can establish connections via the

ISDN D-channel as well as

conversion of the voice or data

signal for transport via the ISDN B-

channel (analogous to a DSU).

TABS See

Telemetry Asynchronous

Block Serial (TABS)

TAC T1 Aggregate and Channel Service

Unit (TAC). Also Verilink’s

Technical Assistance Center @ 1-

(800) 837-4546, Ext: 333.

telco Telephone company.

telecommunications A term that describes voice and

data communications.

Telemetry Asynchronous Block Serial

(TABS)

TABS is an AT&T TR 54016

Standard point-to-point or multi-

point polled communication

management protocol supported

by all Verilink controller modules.

telephone company (telco) A company that provides its

customers with a digital or analog

communications line.

telephone company (telco) register A performance data register from

which either a telco or customer

operator can retrieve data, but

only a telco operator can reset.

Telnet Telnet is a TCP/IP protocol that

defines a client/server mechanism

for emulating terminal sessions.

terminal An input/output device that is

used to communicate with a

computer. A terminal must have a

keyboard and a display.

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