Nortel Networks NN43001-106 User Manual

Page 187

187

Alternative Routing for DID/DDD

Contents

This section contains information on the following topics:

"Feature description" (page 187)

"Operating parameters" (page 188)

"Feature interactions" (page 189)

"Feature packaging" (page 189)

"Feature implementation" (page 189)

"Feature operation" (page 190)

Feature description

The Alternative Routing for DID/DDD feature provides alternate routing for
calls that are recognized as remote Direct Inward Dialing (DID) or Direct
Distant Dialing (DDD) Special Numbers (SPN) in a private network. Low
cost routing for off-network numbers is also supported.

The Alternative Routing for DID/DDD feature is an enhancement to the
Off-net Number Recognition feature.

Refer to Electronic Switched Network description (309-3001-100) for further
information on the Off-net Number Recognition feature.

For the Alternative Routing for DID/DDD feature, a new type of number is
introduced in the SDRR block. It is called the Alternate Routing Remote
Number (ARRN). Following each SPN, and only SPNs, a customer can
configure ARRNs. For each ARRN, it is also possible to configure an
Alternate Route List Index (ARLI).

Call processing follows the same steps as the Off-net Recognition feature
follows. The expected digits are compared to the numbers defined in the
SDRR Table, and one of the following scenarios applies:

Scenario 1

Nortel Communication Server 1000

Features and Services - Book 1 of 6 (A to B)

NN43001-106

01.04

Standard

Release 5.0

27 July 2007