Wyse 3315SE Reference Manual page 250

Glossary 226
PPP
Protocol
RAM
RAS
RDP
RS-232 cable
RTS/CTS flow control
Point-to-Point Protocol. A serial communication protocol that
operates over dialup or leased (dedicated) lines to provide
connections into IP networks. It sets up and monitors router
sessions and frames the data transmitted over the line.
A set of formal rules describing how to transmit data, especially
across a network. Low-level protocols define the electrical and
physical standards to be observed, bit- and byte-ordering, and
the transmission and error detection and correction of the bit
stream. High level protocols deal with the data formatting,
including the syntax of messages, the terminal to computer
dialogue, character sets, sequencing of messages, etc.
Random-Access Memory. A mass store that provides fast
access to any storage location by means of vertical and
horizontal coordinates. Information is written in or read out using
the same procedure. The memory cycle time is the same for any
location addressed because there is no waiting or sorting time
required, as there is when data items are stored sequentially.
Remote Access Services. A service provided by Windows NT
that allows most of the services which would be available on a
network to be accessed over a modem link. The service
includes support for dialup and logon, and then presents the
same network interface as the normal network drivers (albeit
slightly slower). It is not necessary to run Windows NT on the
client - there are client versions for other Windows operating
systems.
Remote Desktop Protocol. A computing technology that
separates an application's logic from its user interface and
allows 100% application execution on the server.
A cable for serial interfaces between the terminal and
communications devices, such as a modem. The cable
connects to the 25-pin serial port at the back of the terminal.
Maximum cable length is 50 feet; maximum signaling rate is 20
Kbits/sec.
Request to Send/Clear to Send flow control. Enables flow
control on the local serial line. RTS is pin 4 of the 25-pin RS232/
423 connector. CTS is pin 5 of the connector. RTS is an output
of the terminal; CTS is an input to the terminal.