User Manual

Amosphere NPM Installation Procedures (MMDS)
148 Part 004071A revision 00b August 6, 2003
R
RF (radio frequency)
Any frequency in the electromagnetic spectrum
that is used for radio transmission (typically
1 MHz to 300 GHz).
RJ-45 (registered jack-45)
An 8-wire connector used to connect computers
to an Ethernet or a token-ring LAN.
router
A device that forwards packets of any type from
one LAN or WAN to another. Routers read the
information in packet headers and use routing
tables and protocols to determine the optimal
route between hosts.
S
sector
A wedge of a radio cell used to increase the
capacity of the cell. Radio sectors use directional
antennas instead of omnidirectional antennas.
The NPM supports up to six sectors, each of
which is managed by a radio sector controller.
SOMAport
The SOMA Networks CPE. The SOMAport is
the terminal device that connects a subscriber’s
telephones and personal computers via a wireless
link to the NPM.
switch
In networks, a device that filters and forwards
packets based on the address in the packet header.
Switches operate at the data link layer of the OSI
Reference Model.
T
TCP (Transmission Control Protocol)
A protocol that enables two hosts to establish a
connection and reliably exchange streams of data
over IP-controlled networks. TCP operates at the
transport layer of the OSI Reference Model.
TCP/IP (Transmission Control Protocol/
Internet Protocol)
The suite of communications protocols
developed by the United States Department of
Defense to connect dissimilar systems. TCP/IP is
supported by many operating systems and is the
protocol of the Internet. It uses IP addresses to
route messages over multiple networks.
U
UPS (uninterruptable power supply)
A battery-powered device that provides power to
a system in the event of an interruption to the
main power.
W
WAN (wide area network)
A physical or logical data network that spans a
relatively large geographical area and that
typically connects two or more LANs.
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