Configuring The Branch Office; Procedure - Nortel Remote Gateway 50 Configuration Manual

The type of number configured in the NRS should be set to match the type
of number as configured in the main office.
Note: If some calls are to be routed differently from others, it is possible
to provision the multiple Numbering Plan Entries in the NRS to achieve
this.
For example, if ZDP = 101, it is possible to provision multiple Numbering
Plan Entries (101, 1011, and so on) to route calls based on the ZDP value
or the ZDP value plus some of the dialed digits.
Unlike on the Call Server, if the ZDP plus additional digits are used to
identify routing it is not necessary to provision all of the combinations. For
example, if calls with digit strings starting with "1011" are to be routed
differently from those starting with "101x" (where "x" is a digit other than
"1"), then only "101" and "1011" need to be provisioned as numbering plan
entries on the NRS.

Procedure 13

Configuring the branch office

1 Configure the Route List Index at the branch office.
After the call arrives at the branch office, a route must be provisioned to
handle the call. In order to be able to select a trunk to route calls, a Route
List Index (RLI) must be configured in the Route List Block (RLB). The RLI
uses the route number for PSTN trunk to route calls to the PSTN. A Digit
Manipulation Index (DMI) can be associated with the RLI to allow
manipulation of the digits to be outpulsed. For this application, the DMI is
used to remove the ZDP digits that were inserted in the dialed digits at the
main office. The DMI is also used to convert the call type back correctly
according to the incoming SPN pattern.
Main Office Configuration for Survivable Remote Gateway 50
Dialing Plan configuration
End of Procedure
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Configuration Guide