ADTRAN 1204006L1 Manual do Utilizador descarregar pdf (Página 160)

144 FSU 5622 ESP User Manual 61200.175L1-1

Glossary

segments to each other or to a WAN. Routers route traffic on the Level 3 LAN

protocol (e.g., the internet protocol address). See also bridge.

service

The provision of telecommunications to customers by a common carrier,

administration, or private operating agency, using voice, data, and/or video

technologies.

SNMP

Simple Network Management Protocol. A control and reporting scheme widely

used to manage devices from different vendors. SNMP operates on top of the

Internet protocol.

Data set ready. A signal on the EIA-232 interface that indicates if the

communications is connected and ready to start handshaking control signals so

communications can begin.

statistical multiplexing

Interleaving the data input of two or more devices on a single channel or access

line for transmission through a frame relay network. Interleaving of data is

accomplished using the DLCI.

switched network

The network of dial-up telephone lines using circuit switching to provide

communications services to network users.

synchronous

Communications in which the timing is achieved by sharing a single clock. Each

end of the transmission synchronizes itself with the use of clocks and

information sent along with the transmitted data.

synchronous data link control (SDLC)

A link-level communications protocol used in an international business machines

(IBM) systems Network Architecture (SNA) network that manages synchronous,

code-transparent, serial information transfer over a link connection. SDLC is a

subset of the HDLC protocol developed by ISO.

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ADTRAN 1204006L1 Manual do Utilizador Página 160