User Manual

136 MDS entraNET 900 System Guide (Preliminary) MDS 05-4055A01, Rev. A
access point, the new access point tells the old access point, using IAPP,
that the station has left and is now located on the new access point.
ICMP—Internet Control Message Protocol
IEEE—Institute of Electrical and Electronic Engineers
Image (File)—Data file that contains the operating system and other
essential resources for the basic operation of the transceiver’s CPU.
LAN—Local Area Network
Latency—The delay (usually expressed in milliseconds) between when
data is applied at the transmit port at one radio, until it appears at the
receive port at the other radio.
MAS—Multiple Address System. A radio system where a central
master station communicates with several remote stations for the pur-
pose of gathering telemetry data. Figure 1-2 on Page 6 shows an
example of an MAS system.
MAC—Media Access Controller
MCU—Microcontroller Unit. This is the processor responsible for con-
trolling system start-up, synthesizer loading, hop timing, and key-up
control.
MD5—A highly secure data encoding scheme. MD5 is a one-way hash
algorithm that takes any length of data and produces a 128 bit “finger-
print”. This fingerprint is “non-reversible”, it is computationally infea-
sible to determine the file based on the fingerprint. For more details
check out “RFC 1321” on the Internet.
Microcontroller Unit—See MCU.
Mobile IP—An emerging standard by which access points and stations
maintain network connectivity as the stations move between various IP
networks. Through the use of Mobile IP a station can move from its
home IP network to a foreign network while still sending and receiving
data using it's original IP address. Other hosts on the network will not
need to know that the station is no longer in its home network and can
continue to send data to the IP address that was assigned to the station.
Mobile IP also uses DHCP when the station moves into a foreign net-
work.
Mobility—Refers to a station that moves about while maintaining
active connections with the network. Mobility generally implies phys-
ical motion. The movement of the station is not limited to a specific net-
work and IP subnet. In order for a station to be mobile it must establish
and tear down connections with various access points as it moves