Psion Teklogix 9160 G2 User Manual page 417

and into range of different base station service areas. IEEE
which APs can communicate information about client associations and disassociations in
support of roaming clients.
Router
A router is a network device which forwards packets between networks. It is connected to at
least two networks, commonly between two local area networks (LANs) or between a
and a wide-area network (WAN), for example, the Internet. Routers are located at
gateways—places where two or more networks connect.
A router uses the content of headers and its tables to determine the best path for forwarding
a packet. It uses protocols such as the Internet Control Message Protocol (ICMP), Routing
Information Protocol (RIP), and Internet Router Discovery Protocol (IRDP) to
communicate with other routers to configure the best route between any two hosts. The
router performs little filtering of data it passes.
RSSI
The Received Signal Strength Indication (RSSI) an
relative to the received signal strength. RSSI is one of several ways of measuring and
indicating radio frequency (RF) signal strength. Signal strength can also be measured in
mW (milliwatts), dBms (decibel milliwatts), and a percentage value.
RTP
Real-Time Transport Protocol (RTP) is an Internet protocol for transmitting real-time data
like audio and video. It does not guarantee delivery but provides support mechanisms for the
sending and receiving applications to enable streaming data. RTP typically runs on top of
the UDP protocol, but can support other transport protocols as well.
RTS
A request to send (RTS) message is a signal sent by a client station to the access point,
asking permission to send a data packet and to prevent other wireless client stations from
grabbing the radio waves. This message is a part of the IEEE 802.11
(See also RTS Threshold and CTS.)
Psion Teklogix 9160 G2 Wireless Gateway User Manual
802.11f defines a standard by
802.1x value that calculates voltage
CSMA/CA
Appendix D: Glossary
Router
LAN
protocol.
D-67