User's Manual

172 Mercury Reference Manual 05-4446A01, Rev. C
communications device. When the buffer approaches overflow, the
radio drops the clear-to-send (CTS) line, that instructs the connected
device to delay further transmission until CTS again returns to the high
state.
Host ComputerThe computer installed at the master station site, that
controls the collection of data from one or more remote sites.
HTTPHypertext Transfer Protocol
ICMPInternet Control Message Protocol
IGMP (Internet Gateway Management Protocol)Ethernet level
protocol used by routers and similar devices to manage the distribution
of multicast addresses in a network.
IEEEInstitute of Electrical and Electronic Engineers
IEEE 802.1QA standard for Ethernet framing which adds a four-byte
tag after the Ethernet header. The four-byte tag contains a VLAN ID and
a IEEE 802.1P priority value.
IEEE 802.1XA standard for performing authentication and port
blocking. The 802.1X port/device denies access to the network until the
client device has authenticated itself.
Image (File)Data file that contains the operating system and other
essential resources for the basic operation of the radio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.
MACMedia Access Controller
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
review RFC 1321 available on the Internet.
MIBManagement Information Base
Microcontroller UnitSee MCU.
Mode See Device Mode.
MTBFMean-Time Between Failures
Multiple Address System (MAS)See Point-Multipoint System.