User Manual

120 40520-100a ViPR User Manual
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Gateway A device that interconnects networks with different, incompatible communica-
tions protocols.
HDX Half Duplex. Data transmission that can occur in two directions over a single
line, using separate Tx and Rx frequencies, but only one direction at a time.
HiPR-900 Frequency hopping spread spectrum wireless modem that operates in the license-
free 902-928 MHz band.
ViPR™ DSP-based narrowband Ethernet IP radio (6.25 / 12.5 / 25 kHz – UHF). Licensed
narrowband OIP radio, “companion” to the un-licensed HiPR product.
HTTP HyperText Transport Protocol - The communications protocol used to connect to
servers on the World Wide Web.
IPCONFIG A Windows 2000 and XP utility that displays the IP address for a particular net-
working device.
LNK/ACT LED Ethernet connection established – Ethernet data activity.
MAC Media Access Control - The unique address that a manufacturer assigns to each
networking device.
Midspan PSE Power Sourcing Equipment – Equipment used to inject PoE over the unused
conductors of a 4-pair standard cable (E.g.: CAT5)
MTU Maximum Transmission Unit - The largest TCP/IP packet that the hardware can
carry.
NAT Network Address Translation - NAT technology translates IP addresses of a local
area network to a different IP address for the Internet.
Network A series of computers or devices connected for the purpose of data sharing, stor-
age, and/or transmission between users.
Network speed This is the bit rate on the RF link between units.
Node A network junction or connection point, typically a computer or work station.
OIP Optimized IP – Compresses TCP and UDP headers, and filters unnecessary ac-
knowledgments. This makes the most use of the available bandwidth.
OTA Over-The-Air - Standard for the transmission and reception of application-related
information in a wireless communications system
Parallel Decode Patented technology used by HiPR products featuring dual receivers for added
data decode sensitivity in multi-path and fading environments. (United States
Patent No: 6,853,694 B1)
PHY A PHY chip (called PHYceiver) provides interface to the Ethernet transmission
medium. Its purpose is digital access of the modulated link (usually used together
with an MII-chip).
The PHY defines data rates and transmission method parameters.
Ping Packet INternet Groper - An Internet utility used to determine whether a particu-
lar IP address is online.
PLC Programmable Logic Controller. A user-provided intelligent device that can
make decisions, gather and report information, and control other devices.
Powered Device Device that is drawing power from an Ethernet cable. A powered device is com-
patible with both midspan PSE and endspan PSE; it is insensitive to polarity
PWR LED Indicates presence of DC power input.
RIPv2 Dynamic IP routing protocol based on the distance vector algorithm.
Router A networking device that connects multiple networks together.