User Guide

PMP 450 Planning Guide Glossary
pmp-0047 (December 2012)
IX
Term Definition
Quick Start Interface page that requires minimal configuration for initial module operation.
Radio Signal
Strength Indicator
Relative measure of the strength of a received signal. An acceptable link displays an
Radio Signal Strength Indicator (RSSI) value of greater than 700.
Recharging Resumed accumulation of data in available data space (buckets). See Buckets.
Red Hat A registered trademark of Red Hat, Inc.
Reflection Change of direction and reduction of amplitude of a signal that encounters an object
larger than the wavelength. Reflection may cause an additional copy of the wavelength
to arrive after the original, unobstructed wavelength arrives. This causes partial
cancellation of the signal and may render the link unacceptable. However, in some
instances where the direct signal cannot be received, the reflected copy may be
received and render an otherwise unacceptable link acceptable.
Region Code A parameter that offers multiple fixed selections, each of which automatically
implements frequency band range restrictions for the selected region. Units shipped to
regions other than the United States must be configured with the corresponding Region
Code to comply with local regulatory requirements.
Registrations MIB Management Information Base file that defines registrations for global items such as
product identities and product components. See also Management Information Base.
RetransLimitExp
Field
This field displays how many times the retransmit limit has expired.
RF Radio frequency. How many times each second a cycle in the antenna occurs, from
positive to negative and back to positive amplitude.
RJ-11 Standard cable that is typically used for telephone line or modem connection.
RJ-45 Standard cable that is typically used for Ethernet connection. This cable may be wired
as straight-through or as crossover. Later modules auto-sense whether the cable is
straight-through or crossover.
Router Network element that uses the logical (IP) address of another to pass data to only the
intended recipient. Compare to Switch and Bridge.
RPM Red Hat
®
Package Manager.
RSSI Radio Signal Strength Indicator. A relative measure of the strength of a received signal.
An acceptable link displays an RSSI value of greater than 700.
RxBabErr Field This field displays how many receiver babble errors occurred.
RxOverrun Field This field displays how many receiver overrun errors occurred on the Ethernet
controller.
Secure Shell A trademark of SSH Communications Security.
Self-interference Interference with a module from another module in the same network.