AT&T DataPort PCX Modem Guía de usuario descargar pdf (Pagina 75)

Glossary

GL-3

Issue 3 October 1995

Carrier Detect. A signal between the local and remote ends of a

network indicating that energy exists on the transmission circuit.

Associated with Pin 8 on an RS-232 interface.

chassis ground

Pin 1 of an RS-232 interface.

Class 1

A fax modem standard. Under Class 1 computer software

handles most of the protocol, compression, and conversion

tasks.

COM port

A computer’s serial communications port used to transmit to and

receive data from a modem. The modem connects directly to

this port.

Command mode

One of two general operating modes; the other is Data mode.

When in Command mode, the modem accepts commands

instead of transmitting or receiving data.

communications software

Software installed on a computer that controls the modem.

configuration option

Modem software that sets specific operating parameters for the

modem. Sometimes referred to as straps.

CTS

Clear To Send. A signal, sent to the computer via Pin 5 of an

RS-232 interface, indicating that the modem is ready for the

computer to transmit data.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 88 89

Sin comentarios

AT&T DataPort PCX Modem Guía de usuario Pagina 75