Glossary-21
Marathon
Family of products that provide costeffective integration of data, voice, fax
and LAN communications to T1/1 speeds on public frame relay, ISDN and
leased line services.
mark
In data communications, a binary 1 state, which is the steady, notraffic state
for asynchronous transmission.
mesh topology
A communications circuit or transmission path within a network that has
closed loops
. Since there is more than one path between nodes, mesh
topology offers redundancy in the event of link failure or congestion.
Full
mesh
topology occurs when all nodes are directly connected to all other nodes.
See also
delta topology
and
ring topology.
MIB, Management Information Base
A treestructured database of management information stored within the
internal memory of a local area network (LAN) device that is configured with
an Simple Network Management Protocol (SNMP) agent. This database is
used to monitor device operation and change device configurations.
MICOM mux
Those MICOM multiplexers that are compatible to an Integration unit. All
ports on a MICOM mux are addressable by the network so that connections
can be made on an individual basis. MICOM muxes are connected to an
Integration unit via a mux or X.21 link.
MicroBand
ATM
MICOM's networking protocol that forms the network backbone for
integrated voice/fax/local area network data networks over subT1/E1
communications lines. This protocol is a combination of Fast Packet and Cell
Relay technologies; each packet is exactly the same length (in contrast with
V.21 and frame relay networks).
modem
Contraction of MOdulatorDEModulator. A device that converts serial digital
data from a data terminal equipment (DTE) to a signal suitable for
transmission over a telephone line, and converts the received signal to serial
digital data for the DTE. Also called a data set.
module
A printed circuit board and components with specific functionality that plug
into one of the module locations on the unit.
