Specifications

Functions
Dispatch Call Processing
August 08, 2000 68P81095E55-E 4-5
System Identifiers
The iDEN system allows several dispatch call types. To uniquely identify an MS on
the iDEN system several logical IDs are used. This information is maintained in the
dispatch provisioning databases on the DAP.
In dispatch calling the identification, call processing, tracking, and selection of
services requires logical tags to identify iDEN system users.
Urban Identifier
Software Release 8.0 introduces the concept of urban areas. Motorola assigns Urban
IDs to a urban area.
The Urban ID increases the number of fleets available globally and provides a
mechanism to establish fleet-to-fleet dispatch calls.
This information is maintained in the Dispatch Home Location Register (D-HLR)
and Visited Location Register (D-VLR).
Fleet Identifier
A Fleet ID is a logical designation of a corporate or municipal entity that usually
receives the billing. A fleet consists of groups and users (members). As a business-
oriented communication service, the iDEN system bases the dispatch calling on the
fleet basis. One user in each fleet is designated as a dispatcher (user 0).
Group Identifier
A Group Identifier is used to subdivide fleets into logical units. One fleet member is
always the dispatcher (User 0) and is a member of all groups. Other users in the fleet
are assigned to groups based on organization, function, task or some other fleet
related method. The type and number of groups within a fleet are fleet specific.
The service provider may configure each MS in the fleet with specific operating
limits so a user will hear only the conversations and announcements that relate to the
members of the same group.
An MS may be part of more the one talk group. An end-user may change the default
talk group as required if the service provider allows this in provisioning and the MS
can support it. An MS cannot be in more than one group at the same time.
Multiple
Simultaneous Talk-
group
The Multiple Simultaneous Talk-group (MST) is an optional feature associated with
MSs with advanced feature. An Advanced Feature Unit (AFU) MS and the
Advanced Feature software are required to support MST.
MST allows an MS to be part of up to four groups in the same fleet. This allows a
user to monitor and participate with groups other than the MS’ currently registered
group. The MS can use a mode switch to change its current (selected) group. One
group is Selected and the others (up to 3) groups are Associated. There can only be
one Selected group per mode switch setting. Associated talkgroups for all modes can
also be toggled On/Off.