Question: Which of the following best describes the primary purpose of the Originating Identification Presentation (OIP) service in telecommunication networks?
Option 1: To restrict the presentation of the originating user's identity to the terminating user.
Option 2: To provide the originating user with options for managing incoming calls.
Option 3: To offer the terminating user trusted, network-provided identity information about the originating user.
Option 4: To enable the terminating user to block calls from unknown origins.
Explanation: The correct answer, Option 3, accurately reflects the primary purpose of the OIP service. This service provides the terminating user with reliable information to identify who is calling them, enhancing their ability to manage incoming communications effectively. Options 1 and 4 describe functions more aligned with call restriction services, while Option 2 does not accurately represent the OIP's main goal.