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12-2 Issue 5 January 1998
The latest QSIG enhancements enable the system to move calls from their origi-
nal paths to new paths that cost less or use resources more efficiently. New paths
can be set up as the call is established, while it is being forwarded, or while it is
being transferred. DEFINITY ECS’s implementation of QSIG also supports the
ISO QSIG private network diversion supplementary service, as described in the
QSIG standard.
World Class Routing
DEFINITY ECS has been designed to be a world-class system that meets the
needs of both domestic and global customers. One capability essential in meet-
ing those needs is the ability to flexibly dial any location in the world, regardless
of the dial plan used at that location. In recognition of this requirement, DEFINITY
ECS has been designed with World Class Routing.
World Class Routing is a powerful enhancement to DEFINITY ECS’s call-routing
capabilities, linking several call-routing features to build a communications net-
work capable of providing flexible call routing for any type of dialing plan while
accommodating changes in both international and domestic dialing plans.
The following are key components of World Class Routing:
■ Digit Conversion converts a dialed number for public network number to a
private network number and vice versa. Dialed numbers matching entries
in the digit conversion tables are treated and converted. Converted calls
can be routed via the most optimum route, resulting in reduced network
charges and appropriate use of the private network.
■ Toll Analysis compares a dialed number to entries in the system’s list.
Based on the results, calls may be restricted from completion.
■ Automatic Route Selection digit analysis compares a dialed public
network number with entries in the system’s tables, mapping the number
to a selected public network routing pattern.
■ Automatic Alternate Routing digit analysis compares a dialed private
network number with entries in the system’s tables, mapping the number
to a selected private network routing pattern.
World Class Routing supports the Automatic Route Selection and Automatic
Alternate Routing as separate features, but through generalized administration
applicable to both features, provides both the same routing abilities. In addition,
there are a number of capabilities that enhance the flexibility of routing in sup-
porting your domestic and/or global calling requirements.
For example, 18-digit routing allows DEFINITY ECS to determine call routing by
analyzing up to 18 digits with no restriction on the grouping or format of the dig-
its, eliminating any assumptions about the use of a particular dialing plan.