ADTRAN MX2800 M13 Manual de usuario descargar pdf (Pagina 184)

MX2800M13 Multiplexer User Manual

E-4 61200290L1-1H

DS3 Digital signal Level 3. Equivalent of 28 DS1s and 672 DS0s. (Total

bandwidth is 44.736 Mbps.)

DSU Data service unit. A device designed to transmit and receive digital

data on digital transmission facilities.

DTE Data terminal equipment. The end-user terminal or computer that

plugs into the termination point (DCE) of a communications

circuit. The main difference between the DCE and the DTE is that

Pins 2 and 3 are reversed.

E1 Transmission rates of 2.048 Mbps are available on T1 communica-

tion lines. See also “T1”.

end device The ultimate source or destination of data flowing through a

network (sometimes referred to as DTE).

end user Subscriber who uses (rather than provides) telecommunications

services.

ES Errored seconds. A second with one or more coding violations

(CVs).

Ethernet Transmission protocol for packet-switching LANs.

facilities The equipment used by carriers to provide communication

services.

far end The distant end to that being considered. Not the end where testing

is being carried out.

FCC Federal Communications Commission. The U.S. federal agency

responsible for regulating interstate and international communica-

tions by radio, TV, wire, satellite, and cable.

FDL Facility datalink. FDL bits provide overhead communication

between the terminal equipment in ESF framing.

gateway A device which enables information to be exchanged between two

dissimilar systems or networks.

host computer The primary or controlling computer in a multiple computer opera-

tion.

idle code In a T3 circuit, an idle code consists of a sequence of 1100 over the

entire payload bandwidth.

1 2 ... 179 180 181 182 183 184 185 186 187 188 189 ... 197 198

Sin comentarios

ADTRAN MX2800 M13 Manual de usuario Pagina 184