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When a DGNA request to add a talkgroup is received, the radio adds the group in the first available
spot in the talkgroup list in the codeplug. Then you can scroll to the talkgroup to select the group. The
codeplug determines which DGNA operations are allowed for a group.
Depending on the group type, the following is allowed:
•
Static – only selection is allowed.
•
Semi-Static – selection and reassignment are allowed.
•
Dynamic – selection, de-assignment, and reassignment are allowed.
The groups can be assigned as not attached, attached as scanned or attached as selected.
Assignment of the group through DGNA with attached as selected makes it the selected group of the
radio. If the group is assigned with attached as scanned, if it is not already in the currently active scan
list, the radio adds this group to a SwMI Controlled scan list and begins monitoring downlink signaling
addressed to this group. The SwMI controlled list holds up to ten groups, and the radio monitors these
groups as well as groups in the user scan list.
If the talkgroup list is full when adding a group, the radio rejects the assignment operation. If the SwMI
controlled list is full and the assignment is with attached as scanned, the attachment is rejected.
When a talkgroup de-assignment is received, depending on the codeplug settings (DGNA Operations
field in the Talkgroup List) the radio behavior is as follows:
•
If the DGNA Operations field is set to Static or Semi-Static, the radio;
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leaves the talkgroup and the parameters assignments to folders unchanged.
-
sends an acknowledgment PDU with notification the group definition has been removed.
•
If the DGNA Operations field is set to Dynamic or if the group is not in the talkgroup list, the radio;
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removes the talkgroup from the talkgroup list, if the talkgroup is in the list.
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removes all the occurrences of the talkgroup from the folder list.
-
sends an acknowledgment PDU with notification the group definition has been removed (also if
the talkgroup has been deleted, or the talkgroup does not exist in the radio).
Even if the talkgroup is de-assigned, the radio can receive group calls or emergency group calls for
any assigned scan list.
If the de-assignment is for a group in the scan list, the group remains in the list. However, it is not
monitored.
If the de-assignment is for a group in the SwMI controlled list, the group is removed from the list.
If the de-assignment is for the selected group, depending on the service provider settings, the radio;
•
notifies that there is no group attached, when in the group mode, and does not attach to another
talkgroup automatically.
•
attaches to the previously selected talkgroup, which is the talkgroup it was attached to before the
DGNA being assigned. If the previous selected group is not present then the radio shows that there
is no group attached and displays No Group.
•
attaches to a default talkgroup configured by the service provider. If the default talkgroup is
unavailable (it was deleted), the radio enters the No Group state.
At each talkgroup change, an appropriate notification is shown on the display.
If the de-assignment is for an announcement group, the talkgroup is removed from the talkgroup list.
Also, all the groups that are associated with this announcement group do not have an associated
announcement group. If the currently selected talkgroup is associated with this announcement group,
the radio stops scanning the associated announcement group.
MN004527A01-AG
Chapter 2: Services and Features
63
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