Microwave Data Systems iNET 900 Series, Руководство пользователя

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MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 163
essarily physical, move between access points within a specific network
and IP subnet.
RSSI—Received Signal Strength Indicator
RTU—Remote Terminal Unit. A data collection device installed at a
remote radio site.
SCADA—Supervisory Control And Data Acquisition. An overall term
for the functions commonly provided through an MAS radio system.
Skip Zone(s)—Groups of operating channels (frequencies) deleted
from the radio transmitter and receiver operating range.
SNMP—Simple Network Management Protocol
SNR—Signal-to-Noise Ratio. A measurement of the desired signal to
ambient noise levels.This measurement provides a relative indication of
signal quality. Because this is a relative number, higher signal-to-noise
ratios indicate improved performance.
SNTP—Simple Network Time Protocol
SSL—Secure Socket Layer
STP—Spanning Tree Protocol
Standing-Wave Ratio—See SWR.
SWR—Standing-Wave Ratio. A parameter related to the ratio between
forward transmitter power and the reflected power from the antenna
system. As a general guideline, reflected power should not exceed 10%
of the forward power (
≈
2:1 SWR).
TCP—Transmission Control Protocol
TFTP—Trivial File Transfer Protocol
Trap Manager—Software that collects SNMP traps for display or log-
ging of events.
UDP—User Datagram Protocol
UTP—Unshielded Twisted Pair
WINS—Windows Internet Naming Service. Part of Microsoft Win-
dows NT and 2000 servers that manages the association of workstation
names and locations with Internet Protocol addresses. It works without
the user or an administrator having to be involved in each configuration
change. Similar to DNS.
Zone—See Frequency Zone.