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GLOSSARY 447
RMON Remote Monitoring. A facet of SNMP-based network management, the
RMON MIB (Management Information Base) defines the standard
network monitoring functions for communication between SNMP-based
management consoles and remote monitors. A typical MIB captures
information about a device, but RMON captures information about traffic
between devices.
RJ-11 A four-wire modular connector used by the telephone system.
RJ-45 An eight-wire modular connector used by telephone systems. The
eight-pin modular connectors used for 10BASE-T UTP
cable resemble
RJ-45 connectors, but they have substantially different electrical
properties.
router A network device that links LANs together locally or remotely as part of a
WAN. A network built using routers is often termed an internetwork.
routing The process of delivering a packet across one or more networks via the
most appropriate path.
SA System Appearance
screen POP A CTI
term for a window that automatically opens on a user’s computer
when a predefined telephone event occurs. For example, an incoming call
could generate a screen pop that lists caller ID
information.
segment A LAN term meaning an electrically continuous piece of the bus.
Segments can be joined together using repeaters or bridge
s.
serial interface Hardware for sending and receiving data one bit at a time.
SMDR Station Message Detail Recording. A stream of call data from the
telephone system. Typically, the data is not stored on the telephone
system itself. Rather, it is captured by an external device that connects to
the telephone system through an RS232 port.
SMTP Simple Mail Transfer Protocol. The TCP/IP
standard protocol for
transferring electronic mail messages from one machine to another. SMTP
specifies how two mail systems interact and the format of control
messages they exchange to transfer mail.
SNA Systems Network Architecture. IBM’s layered communications protocol
for sending data between IBM hardware and software.