ABSTRACT: Issue 10 of GR-1298, AINGR: Switching Systems, replaces Issue 9.

This document provides the generic requirements needed to implement the Advanced Intelligent Network (AIN) technology in a public telephone network, specifically in the switching system.

GR-1298 represents the Telcordia view of the requirements needed for an AIN switching system. A Service Switching Point (SSP) is a switch with the capability to query external service logic or databases to continue processing a call or continue offering a service to an end user.

AIN provides the ability for service providers to create services for customers and to generate revenue. The requirements in GR-1298 allow a service provider to build AIN into a switch or interwork effectively with an AIN switch. For a supplier, GR-1298 contains the time-tested requirements accepted as the only AIN requirements in the industry.

Key changes in Issue 10 include:

• Requirements that allow for overflow to switch-based carrier selection when the last Trunk Group provided by the SCP encounters busy.
• A requirement that allows operator access calls to be routed using a TrunkGroup parameter instead of only a Carrier parameter.
• Clarification to indicate that when a SDS trigger is encountered, the response, in general, should contain the ChargePartyStationType and the Charge Number parameters.
• A requirement was modified to allow the O_No_Anser trigger to be encountered after the IN/1 routing feature when a toll-free call is made.