US Robotics COURIER Manual de usuario descargar pdf (Pagina 295)

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101

U.S. Robotics I-modem Command Reference

Glossary • Page G-37

SDLC

See Synchronous Data Link Control.

S/T-interface

The name given to the signaling interface between an NT-1 and a terminal adapter or an

ISDN terminal.

serial port

A computer port that enables the transmission of data characters, one bit at a time, using a

single electrical path. Also known as a communications port, or COM port. On IBM-com-

patible PCs, this is a port for asynchronous

, serial data transmission and, in the case of

modems, for data reception. Data is transmitted one bit at a time (serially) to devices such

as a modem, a serial mouse, or a serial printer.

serial transmission

The sequential transfer of data characters, one bit at a time, using a single electrical path.

Also see parallel transmission

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