Specifications

Dispatch Call Types
Dispatch Call Processing
August 08, 2000 68P81095E55-E 4-11
Selected Service
Area Dispatch
Group Call
A Selected Area Group call is a voice multicast to all members of the fleet’s group in
the caller’s service area and a selected service area (Figure 4-8). Once a group is
selected and a Selected Area Group Call is initiated, all members of the group in the
callers service area and the selected service area as defined by the fleet’s
provisioning will be hailed and activated on the group call (Table 4-4)
Figure 4-8 Selected Area Group Calling
Table 4-4 Selected Service Area Group Selection
Example Call Scenarios of Selected Area Group Calls are shown in Table 4-5
Table 4-5 Selected Group Area Call Events
Group B
Dispatcher
Location
Area
Group A
Group A
Group B
Group A
Group A
Group A
Group B
Location Area
Group B
Cell
Group B
Another Selected Location
Area
Group A
Group A
Group B
Group A
Group A
Dispatcher
T. N. French
MS User Selects System Locates and Includes
Selected Service Area Group • Members of the group in initiator’s service area
• Members of the group in selected service area
Event/State Notification
MS in Initiator and Target service area If MS and resources available, Successful Call
MS is out of service area Remains idle
MS enters service area and is on an
active group call area
MS will be brought into the active call
MS leaves service area MS remains active in call
MS powers up during call MS becomes active in call through registration
if MS is in selected area
MS ends another service within service
area and is on group call area
MS will be brought into the active call.
MS ends another service within service
area and is not on group call area
MS remains idle. If MS attempts a Group Call,
or other active MS enters cell, it joins the active
call.
MS ends a service out of service area Remains idle
MS ends another service and enters
active group call area
MS will be brought into the active call