scope:

Scope & Purpose

This standard describes NGN signaling support for Operator Regular Intercept service.

The details of the caller interaction with the Operator Regular Intercept service (e.g., the specific announcement that might be provided to the caller) are out of the scope of this standard.

The scope of this standard includes:

1. SIP signaling for a call reaching an intercepted number in the NGN where all or part of the Intercept Service is provided by the Application Server associated with other terminating services for this destination.

2. SIP signaling for a call reaching an intercepted number in the NGN and directed toward an application in the NGN, or in another NGN, which provides the Intercept Service.

Interconnection is assumed to be between trusted domains; the information and parameters required for this service are only available either within a trust domain or between trusted domains. In addition, in the absence of trust, and depending on exactly which information is not trusted, basic call setup may not function as expected.