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MN004527A01-AG
Chapter 2: Services and Features
2.9.7
Transmission Timeout Timer
The radio limits the time you can continuously talk in a group call without interruption, according to a
provisioned value. You are warned a short time before the talk time expires. The timer is provisioned
per talkgroup folder.
2.9.8
Group Call Reception
In most situations, the radio receives group calls without any intervention. When the radio receives an
incoming group call, you are alerted with a short alert tone. Depending on the configuration, the tone
can be disabled. Then the speech follows.
To clear a call ended by the call owner, normally by the SwMI, you do not need to do anything.
However, you can leave a group call. Then the call continues for other radios, even though your radio
does not participate in the call anymore.
2.9.9
Talkgroup Scanning
Talkgroup scanning allows the radio to monitor signaling of a few talkgroups at the same time. In
addition to monitoring signaling addressed to the selected talkgroup, the radio can monitor signaling
addressed to multiple talkgroups.
To enable talkgroup scanning, select a pre-defined scan list. The available scan lists are configurable
through the CPS only. This list holds up to 20 talkgroups, which you monitor in addition to the selected
group.
You can choose only one user-activated scan list at a time. When this list is activated, the radio begins
to monitor traffic for these groups in addition to the traffic for the selected group. Up to 40 scan lists can
be defined.
The radio displays the scanned talkgroup ID when it receives a group call while talkgroup scanning is
active. The display is turned off by default when the radio is transmitting. Pressing the Power/Sleep/
Wake button turns on the display, showing the scanned talkgroup ID.
If the SwMI instructs a radio to detach one of the scanned groups, the radio stops monitoring the
group, but the group remains in the scan list. Subsequent attachment of a group by the SwMI causes
the radio to begin monitoring the group again.
The SwMI may also instruct a radio to attach groups from out of the scan list. If the group attachment is
accepted, the radio monitors the group.
If talkgroups have been attached or are always attached, the radio may passively monitor the following
talkgroups:
•
Selected talkgroup.
•
Announcement Talkgroup (ATG) associated with the selected talkgroup (if this talkgroup is not set
as Permanently detach).
•
Talkgroups associated with the selected ATG (if this talkgroup is not set as Permanently detach).
•
Talkgroups in the user-activated scan list (if scanning is enabled and the SwMI-initiated detachment
has not been performed on these groups).
•
Talkgroups in the SwMI-controlled scan list (if scanning is enabled).
•
Talkgroups with the class of usage set to Always Scanned (if supported).
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