Specifications

General Dispatch Calling
Dispatch Call Processing
4-2 68P81095E55-E August 08, 2000
Region
A Dispatch region is a large geographic area that is usually associated with more than
one market or, more than one urban area. Just as urban areas tend to be adjacent and
overlap, so do service provider coverage areas. A Dispatch region is serviced by a
single provider. If a service provider has adjacent or overlapping markets they may
be linked to provide contiguous service across urban areas.
Domain
A Dispatch domain is an optional division of a system and/or region (Figure 4-2 )
and consists of one of more service areas. A domain may be used to divide a region
into operating areas. These areas define the dispatch operational area based on a
DAP (Fleets). The domain are defined in provisioning. In dispatch calling this
generally limits the range and mobility of a fleet’s subscriber mobiles. With a 6-DAP
cluster, up to 50 domains may be defined. Domain 0 is the entire system. Domains
may contain up to 254 service areas but are usually designed using a smaller number
of smaller service areas. A fleet may be provisioned to allow coverage in a specific
domain.
Figure 4-2 Dispatch Domain Areas
Service Area
A service area consists of 1 or more location areas. Service areas are service provider
defined areas. When placing a group call, an end-user may:
• Call to the same service area only
• Call to a selected service area
• Call to all service areas
Multiple service area provide opportunities of the service provider to structure billing
along coverage areas.
A service area is logically defined in the system provisioning and includes location
areas that can be accessed during private and group calls as described in Dispatch
Call Types. Multiple Service Areas can be defined. Service Areas can overlap. The
Fleet’s MS can Dispatch call with the defined service area. Outside the defined
service area, Interconnect calling must be used.
Service Areas
define Domains
Domains may use
different Service Areas
Common boundries
(arrow) should be avoided