Glossary

Remote System

Usually a bulletin board or videotex system that registered users or the public can dial up and communicate with via modem.

Request to Send

RS-232 control signal by the DTE to inform the DCE that it is ready to transmit data. When used for flow control between the DTE and the modem, this signal indicates to the modem that the DTE is ready to accept data.

Ring Indicator

RS-232 control signal used by the DCE to inform the DTE that it is receiving a ringing signal.

ROM

Read Only Memory.

RS-232C

Frequently shortened to RS-232. A standard which defines the physical and electrical interface between Data Communications Equipment and Data Terminal Equipment. The most commonly used interface between modems and computers. Also known as CCITT V24.

RTS

An acronym for Request To Send. This signal is generated by the terminal or computer indicating that it requires to send data to the modem. Used mainly in half-duplex communications.

S

SDLC

The standard Synchronous Data Link Control protocol used by IBM for products which conform to its System Network Architecture.

Serial Data

Data transmission in which each bit of information is sent sequentially through a single data path.

Shareware

An extension of public domain software. Individuals can obtain copies of software for free from bulletin boards or other computer users. If the software is useful to them, they are encouraged to send a small fee to the program’s author, usually for a printed manual, registration and any software updates that are available. See also Public Domain Software.

SIG

An acronym for Special Interest Group. Groups of user’s who share an interest in a particular

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Telenetics 56 manual Rom, Rts, Sdlc, Sig