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Glossary
GL-10
Cisco IPICS Server Installation Guide
OL-8155-01
multicast pool
Multicast IP addresses that are defined as part of a multicast pool. Cisco IPICS
allocates a multicast address from this pool of resources when a dispatcher
activates a VTG.
multiplexing
The combination of two or more information channels on to a common
transmission medium. In electrical communications, the two basic forms of
multiplexing are time-division multiplexing (TDM) and frequency-division
multiplexing (FDM).
mute
This functionality that enables a dispatcher to mute a PMC user from talking or
transmitting voice on one or more channels. The dispatcher can mute the
microphone of the user or both the microphone and the speaker.
mutual aid channel
A national or regional channel that has been set aside for use only in mutual aid
interoperability situations. Restrictions and guidelines governing usage usually
apply.
N
narrowband
channels
Channels that occupy less than 20 kHz.
National Public
Safety Planning
Advisory
Committee
The committee that was established to conduct nationwide planning and
allocation for the 821–824 MHz and 866–869 MHz bands.
National
Telecommunication
s and Information
Administration
The United States executive branch agency that serves as the principal advisor
to the president on telecommunications and information policies and that is
responsible for managing the federal government’s use of the radio spectrum.
network
An interconnection of communications entities.