HARRIS CORPORATION M803M Manuel D’Utilisation
Network Organization—CHAPTER 2
Software Version OTP 5.07
M-803 Operator Manual 13
User Groups
A user group is a set of users who regularly need to
communicate (all the officers in a state police barracks,
for instance, or all the drivers who work a particular
shift).
communicate (all the officers in a state police barracks,
for instance, or all the drivers who work a particular
shift).
•
In conventional FM radio broadcast systems,
these users work together by tuning to the same
channel.
these users work together by tuning to the same
channel.
•
In the IP-backbone OpenSky digital network,
subscribers in a user group are connected by a bit
of data in the header of every voice or data packet
addressed to the members of the group.
subscribers in a user group are connected by a bit
of data in the header of every voice or data packet
addressed to the members of the group.
With OpenSky, members of the same user group can
stay in contact regardless of where they roam within
the network, whether the network incorporates a single
county, a state, even the entire nation.
stay in contact regardless of where they roam within
the network, whether the network incorporates a single
county, a state, even the entire nation.
Network capacity is the
only limitation on the
number of users that can
make up a group.
only limitation on the
number of users that can
make up a group.
Dispatchers maintain contact with all members of the
group, and each user can stay in “push-to-talk” contact
with the dispatcher and all the users in their talk group,
even if those users are from different, inter-networked
agencies.
group, and each user can stay in “push-to-talk” contact
with the dispatcher and all the users in their talk group,
even if those users are from different, inter-networked
agencies.
The Figure below illustrates a small user group of four
M-803 mobile radios.
M-803 mobile radios.
Figure 1 User Group
Sample Configuration
Nothing about this user group so far defines it as a Talk
Group or a Listen Group. That determination is made
when user groups are gathered together by the network
administrator into the larger groups called profiles.
Group or a Listen Group. That determination is made
when user groups are gathered together by the network
administrator into the larger groups called profiles.
Each radio assigned
to an individual user
to an individual user