Lucent Technologies MERLIN LEGEND Release 6.1 Feature Reference page 761

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Features
Uniform Dial Plan Features
Details of UDP routing for intersystem and other routed calls
Feature interactions across private networks
"Tandem Switching" on page 671
networks, including the following topics:
Switch identifiers
ARS access to lines/trunks on remote networked systems
Remote access settings to allow network routing
Feature interactions with line/trunk features, such as pools and PRI
To take full advantage of UDP functionality, you use system features that also
apply to non-networked systems. The descriptions in this topic therefore include
references to other sections that provide details. For information about
programming networked systems, see System Programming . At the end of this
topic, "Feature Interactions" provides details about features not mentioned
specifically in this section. For further details about network planning and
programming, refer to the Network Reference .
Intersystem Calling
In a private network, users on one local system can call extensions on other
systems in the network. They dial these extensions as inside calls. This topic
describes how to set your system up so that local users can reach these non-local
dial plan extensions. It also describes how users dial non-local extensions.
Extension Ranges
When local users call other users on a remote private-networked system, the local
system manager programs the ranges of extensions of the remote system into a
non-local dial plan.
Each switch in the private network has both a local dial plan and a non-local dial
plan that together form the UDP. The local dial plan is set up at the local system
as in earlier releases, using System Renumbering. The non-local dial plan is a list
of up to 50 different extension number ranges for other systems in the private
network. When users call one another, the system searches the local dial plan; if
the extension number is not found, it consults the non-local dial plan and
associated routing information in order to send the call directly or indirectly to
another system in the network. Routing information is programmed into as many
as 20 patterns consisting of routes. Routes specify digit manipulation, pools,
voice/data call type, and FRLs similar to those used for ARS.
describes additional features of private
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