Specifications

Glossary 311
RS-232 cable A cable for serial interfaces between the terminal and
communications devices, such as a modem. The cable
connects to the 9-pin serial port at the back of the terminal.
Maximum cable length is 50 feet; maximum signaling rate is 20
Kbits/sec.
RTS/CTS flow control Request to Send/Clear to Send flow control. Enables flow
control on the local serial line. RTS is the output of the terminal;
CTS is the input to the terminal.
Serial port A connector on a computer to which you can attach a serial line
connected to peripherals that communicate using a serial
(bit-stream) protocol. The most common type of serial port is a
25-pin D-type connector carrying RS-232 signals. Smaller
connectors (e.g. 9-pin D-type) carrying a subset of RS-232 are
often used on personal computers.
Note
Not all terminals have a serial port.
Server A computer, or a software package, that provides a specific kind
of service (such as access to workstations, printers, and other
parts of the network) to client software running on other
computers. The term can refer to a particular piece of software,
such as a WWW server, or to the machine on which the
software is running. A single server machine could have several
different server software packages running on it, thus providing
many different services to clients on the network.
SNMP Simple Network Management Protocol. The industry standard
protocol for managing TCP/IP networks. This protocol queries
agents in managed devices and passes information to the
management console.
Start bit In asynchronous transmission, the first bit of any given
character used to alert the receiving system to recognize the
related incoming data.
Stop bit In asynchronous transmission, the last bit of any given
character, used to alert the receiving system that transmission
of the character is complete.