Question: In IMS (IP Multimedia Subsystem) as per 3GPP standards, what is a key characteristic of session-based messaging between IMS users?
Option 1: Exchange limited to predefined text message formats.
Option 2: Ability to exchange various multimedia content types, with potential restrictions based on operator policies and user preferences.
Option 3: Restriction to voice calls for real-time communication only.
Option 4: Mandatory use of a specific video protocol for all exchanges.
Explanation: IMS's session-based messaging, as per 3GPP standards, facilitates the exchange of diverse multimedia content (e.g., pictures, videos, sound clips) with flexibility for operator and user-defined restrictions, enhancing communication versatility.