User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
Part #40-00047-00 Rev D v1.0 13
February 28, 2003
Term Stands For.... Meaning
L1
Layer 1 Physical Layer. Part of the OSI rules and standards for network
management. L1 describes the physical layer, or electrical and
mechanical port-to-port connections, in the network.
L2
Layer 2 Data Link Layer. Part of the OSI rules and standards for network
management. L2 describes the data link layer where data is set up
and torn down in a specific format (frames), through the overall
network. Also responsible for detecting and correcting errors by
requesting retransmission.
L3
Layer 3
N
etwork Layer. Part of the OSI rules and standards for network
management. L3 describes the network addressing that gets data
to its destination within the network, i.e., IP addressing.
LAN
Local Area Network A data network of interconnected computers, servers, printers,
and other peripherals that communicate at high speeds over short
distances, usually within the same building. Also allows for
sharing of resources.
LCP
Link Control Protocol Basis of the Point-to-Point Protocol (PPP) scheme for negotiating
and establishing connections.
LED
Light-emitting Diode An electronic device that lights up when electricity passes
through it. Often used to indicate equipment or system state.
LLC
Logical Link Controller A protocol that governs the transition of frames between data
stations regardless of how the medium is shared. It’s the upper
sub-layer that further defines the Media Access Control (MAC)
protocol. It provides the basis for an unacknowledged
connectionless service on a LAN - i.e., error correction,
multiplexing, broadcasting.
LOS
Line-of-sight Describes laser, microwave, RF, and infrared transmission
systems that require no obstruction in a direct path between the
transmitter and the receiver.
MAC
Media Access Control Protocol that governs access to a network in order to transmit
data between nodes. In a wireless LAN, the MAC is the radio
controller protocol (L2).
Mb
Megabit One million (1,000,000) bits.
MB
Megabyte One million bytes. Literally - 1,048,576 bytes.
Mbps
Megabits Per Second Transmission speed at rate of one million bytes per second.
MDM
Modem Card A card in the Navini BTS that converts digital signals into analog
so the signals can be transmitted over telephone lines, and vice-
versa. Modem stands for modulator/demodulator.
MHz
Megahertz One million (1,000,000) hertz - cycles per second. Normally used
to refer to how fast a microprocessor can execute instructions.
MIB
Management Information Base A collection of managed objects used in SNMP-based networks.
MIB’s carry information in a standard format so external tools
can analyze network management and performance.
MMDS
Multipoint Multi-channel
Distribution Service
Fixed wireless, high-speed local service that operates at 2.1 - 2.7
GHz. Speed 10 Mbps. Originally conceived for cable TV service.
NE
1
Near-end or
2
Network Element
1
The transmitting end, versus the receiving end, of a signal
transmission.
2
A router, switch, or hub in an ISDN network.
NLOS
N
on Line-of-site Describes laser, microwave, RF, and infrared transmission
systems that can penetrate obstructions in the path between the
transmitter and the receiver.