Call Routing - Nortel Enterprise Edge 2.0 Programming Manual

128 Configuring Enterprise Edge Services

Call Routing

The Call Routing heading allows you to define how calls are routed by your
Enterprise Edge system. The following illustration shows a detailed view of the Call
Routing programming map.
Call Routing
Routes
Route 000
Destination codes
xx
Call routing decides what path an outgoing call takes using the digits that are dialed.
It is sometimes called Automatic Route Selection (ARS).
When you select an internal line and dial, the system checks the numbers you enter
against the routing tables. If the number you dial starts with a destination code, the
system uses the line pool and dials out digits specified by the route assigned to that
destination code, and then dials the rest of the number that you dialed.
Routing service replaces a number of manual tasks, including:
• entering a line pool code
• dialing an access code for a long distance carrier
• deciding which line pool to use according to the time and day
You can set up routing to take advantage of any leased or discounted routes using
information supplied by the customer. The system cannot tell what lines are cheaper
to use.
For Call by Call service selection (PRI only), the installer defines destination codes
for various call types over PRI lines (for example; Foreign Exchange, Tie Trunk,
and OUTWATS). The user simply dials a number using the intercom button
without having to enter any special information. For more information see,
Call service selection for PRI
Using routing to create a coordinated dialing plan is explained in
dialing plans on page 335.
Enterprise Edge 2.0 Programming Operations Guide
External #
Use pool
Schedules
on page 166.
Plan your routing service before doing any programming.
Routing affects every call placed in the system and must be carefully planned
to avoid conflicts and gaps in the programming. Use tables to design routes
and destination codes, then check for potential problems before you start
programming. It will also save you time to have all the settings written out in
front of you.
Call by
Coordinated
P0911588 Issue 01