Paradyne 1862 User Manual page 73

1862 VoIP IAD User's Guide
LAN:
Local Area Network. A LAN is a data communications system that lies within a limited
spatial area, has a specific user group, and has a specific topology.
latency:
The time it takes a signal to transmit from its source to its destination.
LED:
Light Emitting Diode. A light or status indicator.
LOC:
Loss of Cell delineation. A situation where receiving equipment is unable to identify the
boundaries of a cell.
local analog loopback:
local loop:
An ordinary telephone line.
local loopback test:
receiver input.
loopback:
A diagnostic procedure where a test message is sent back to its origination point, in order
to isolate an equipment or data line problem.
LOS:
Loss of Signal. A digital line condition where there are no pulses.
MAC address:
Media Access Control address. The unique fixed address of a piece of hardware,
normally set at the time of manufacture and used in PAT protocols.
MAC:
Medium Access Control, a protocol for determining which device has access to the network at
any one time.
Mbps:
Megabits per second. One megabit is 1,048,576 (10242) bits.
MCU:
Multi-Commercial Unit. A commercial building or complex with multiple tenants.
MDU:
Multi-Dwelling Unit. A residential building with multiple tenants.
MIB II:
MIB Release 2. An update of the MIB standard, defined by RFC 1213.
MIB:
Management Information Base. A database of managed objects used by network management
protocols to provide network management information and device control.
modem:
Modulator Demodulator. A device used to convert a digital signal into an analog signal and
vice-versa so that data can be transmitted over a telephone line.
modulation:
The process of varying the amplitude, frequency, or phase of a carrier wave to form
data transmissions.
multicasting:
The ability of a network node to send the same data to multiple endpoints.
multiframe:
An ordered, functional sequence of frames on a multiplexed digital circuit.
NAT:
Network Address Translation is a transparent routing function that translates a Private IP
address on a PAT into a Public address that can be used in a public network.
A test in which the modem's VF signal is looped to its receiver.
An analog loopback test that loops a device's transmitter output back to
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