Micros Systems Workstation 4 Setup Manual page 98

WS4 Glossary
RJ-11 Connector
A four or six pin modular telephone connector. The IDN located on IDN
devices is an example of a six-pin RJ-11 connector.
RJ-45 Connector
An eight-pin modular telephone connector. A 10/100 BaseT Ethernet
connector is an example of an RJ-45 connector.
RS232
Abbreviation for Recommended Standard 232. A physical layer
standard for serial transmissions between computers and serial
devices (mice, modems, printers) that are less than 50 feet apart.
The RS232 specification defines signal lines, voltage levels, and
connector pin-outs and is issued by the Electronics Industry
Association and Telecommunications Industry Association.
The Workstation 4 has a total three RS232 ports.
RS422
Abbreviation for Recommended Standard 422. A physical layer
standard for serial transmissions that extend beyond RS232.
The RS422 specification defines signal lines, and voltage levels and is
issued by the Electronics Industry Association and
Telecommunications Industry Association.
A full-duplex version of RS422 is used by the Workstation 4 to drive
IDN printing devices. The workstation has two RS422 ports.
RTC
Abbreviation for Real Time Clock. The RTC is connected to a battery
and separate crystal oscillator to maintain time-keeping when the
workstation is unplugged or turned-off. When an operating system
such as WinCE CE starts, it reads the contents of the RTC to obtain
the current time and date.
SAR Client
Abbreviation for Stand Alone Resilient Client. SAR is an option
available with some POS applications that permit the client
workstation continue to perform basic POS transactions should the
server or network connection to the server fail. Transaction data is
stored locally on the client until the network connection or server is
restored. POS applications supporting the SAR Client on the WS4 use
the CF card to store transaction data.
Glossary-8 Workstation 4 Setup Guide