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GL-9
Cisco IPICS Server Installation Guide
OL-8155-01
Glossary
L
latch
The PMC functionality that allows a Cisco IPICS user to lock in a PTT channel.
linear modulation
A radio frequency transmission technique that provides the physical transport
layer of a radio system. This technology is compatible in digital and analog
system environments and supports channel bandwidths of 5 kHz to 50 kHz.
LMR
Land Mobile Radio. A Land Mobile Radio (LMR) system is a collection of
portable and stationary radio units that are designed to communicate with each
other over predefined frequencies. They are deployed wherever organizations
need to have instant communication between geographically dispersed and
mobile personnel.
location
In Cisco IPICS, location signifies reachability; meaning, channels or users who
are associated with the same location can communicate with each other without
additional network configuration. Location may refer to a physical or virtual
location, as defined in the server.
low-band frequency
Lower frequency levels in the VHF band, typically 25–50 MHz.
M
megahertz (MHz)
A unit of frequency denoting one million Hz.
modulation
The process, or result of the process, of varying a characteristic of a carrier in
accordance with an information-bearing signal.
multicast
Single packets that are copied by the network and sent to a specific subset of
network addresses. Multicast refers to communications that are sent between a
single sender and multiple recipients on a network.
multicast address
A single address that may refer to multiple network devices.
multicast
address/port
Cisco IPICS uses this type of connection to enable the PMC to directly tune in
to the multicast channel.