ADTRAN 1204002L1 Manual do Utilizador descarregar pdf (Página 162)

144 DSU IV ESP User Manual 61204.011L1-1

Glossary

PSTN

public switched telephone network. A direct distance dialing telephone network

that is available for public use. The network is an integrated system of

transmission and switching facilities, signaling processors, and associated

operations support systems that is shared by customers. PSTN also is called

public network, public switched network, or public telephone network.

RDL

remote digital loopback.

remote configuration

A feature designed into ADTRAN DSU/CSU products that allow a remote DSU/

CSU to be configured from a local DSU/CSU or VT 100 compatible terminal.

remote V.54 test

A diagnostic feature that allows testing of the DDS circuit by looping the remote

DSU/CSU back to the local DSU/CSU.

RJ-45

registered jack. 8-pin connector used for data transmission over standard

telephone wire. Single line, 2-wire T/R, PR/PC, programmed data, 8 position,

keyed.

router

A device that supports LAN-to-LAN communications.

scrambler

A device that transposes or inverts signals, or otherwise encodes a message at

the transmitter, to make it unintelligible at a receiver not equipped with an

appropriately set descrambling device.

SDLC

synchronous data link control. 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 1204002L1 Manual do Utilizador Página 162