User Groups - OpenSky P800 User Manual

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).
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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.
Dispatchers maintain contact with all members of the
group, and each user can stay in "push-to-talk" contact
Network capacity is the
with the dispatcher and all the users in their talk group,
only limitation on the
even if those users are from different, inter-networked
number of users that can
make up a group.
agencies.
The Figure below illustrates a small user group of four
P800 portable radios.
Figure 1
User Group
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.
Network Organization — CHAPTER 2
In conventional FM radio broadcast systems,
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.
Each radio assigned
to an individual user
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P800 User's Manual