Nextel comm IR1200 manual Routable IP Address Public IP Address, RS-232, Serial Port, Start Bit

Appendix A: Glossary

RAM

Random Access Memory is the working memory of the computer where you can enter information and call up data.

Routable IP Address (Public IP Address)

A communications protocol that contains a network address as well as a device address, allowing data to be routed from one network to another. Examples of routable protocols are SNA, OSI, TCP/IP, XNS, IPX, AppleTalk and DECnet.

RS-232

A communication standard for digital data. Specifies a number of signal and control lines. RS-232 is often associated with a 25-pin connector called DB-25.

Serial Port

An input/output (I/O) port transmits data one bit at a time, as opposed to a parallel port that transmits multiple (usually eight) bits simultaneously. RS232C is a common serial interface standard.

Service Specific Software

A program designed for a designated online service such as AOL.

Start Bit

A data bit used in asynchronous transmission to signal the beginning of the character.

Stop Bit

A data bit used in asynchronous transmission to signal the end of the character.

System Administrator

The person responsible for monitoring computer activity in a specified area, such as a company.

Synchronous Communication

A method of sending digital data in which the bits come at fixed, rather than random, times and are synchronized to a clock.

TCP/IP (Transmission Control Protocol/Internet Protocol)

The two best-know Internet protocols, often erroneously thought of as one protocol. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and guarantees that packets

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