What role do "targets" play in SIP?

Targets in SIP (Session Initiation Protocol) are crucial as they identify the endpoint of SIP communications. In SIP, a target refers to the specific device or user that is being addressed in a SIP message. This could be a phone, a soft phone application, or a user agent. The SIP protocol uses identifiers such as SIP URIs (Uniform Resource Identifiers) to accurately route requests and terminate sessions to the correct destination. Therefore, having a clear definition of targets is essential for ensuring that communications are directed to the intended recipient, allowing for effective and efficient session management.

The other options do not align with the function of targets in the SIP protocol. While temporary storage, message encryption, and quality settings are important in various aspects of SIP communications, targets specifically relate to the identification of endpoints for initiating and managing sessions.