Specifications

Dispatch Call Types
Dispatch Call Processing
4-10 68P81095E55-E August 08, 2000
Local Service Area
Dispatch Group
Call
A Local Area Group call is a voice multicast to members of the fleet’s group in the
callers service area, the group dispatcher, and members of the group in the
dispatcher’s service area (Figure 4-7). Once a group is selected and a Group Call is
initiated, all members of the group will be activated on the group call (Table 4-2).
Figure 4-7 Local Area Group Calling
Table 4-2 Local Service Area Group Selection
Examples Call Scenarios of Local Group Calls are shown in Table 4-3.
Table 4-3Local Group Call Scenario
Group B
Dispatcher
Location
Area
Group AGroup A
Group B
Group A
Dispatcher
Group A
Group A
Group A
Group B
Location Area
Group B
Other Location Areas
Group B
Group B
Group A
Group A
Group A
Cell
T. N. French
MS User Selects System Locates and Includes
Local Service Area
Group
• Members of group in initiator’s service area
• Dispatch station (user 0) for the group
Event/State Notification
MS in service area If called MS and resources are available,
Successful Call
MS out of service area Called MS idle. If it attempts a Group Call,
it will be brought into the active group call
MS enters the active group call area MS will be brought into the active call
MS active in call leaves service area MS remains active in call
MS powers up during call MS activates. If MS is outside the service
area and tries a Group Call, it joins the call
MS ends another service in the service area
and is in the active group call area
MS will be brought into the active call
MS ends another service in the service area
and is not in the active group call area
MS is idle. If MS tries a Group Call, or other
MS enters cell, MSs joins the active call
MS ends another service out of service area MS remains idle. If MS attempts a Group
Call, it joins the active call.
MS ends an service out of service area and
enters the active call group area
MS will be brought into the active call