Question: What is a key characteristic of Real-Time Text (RTT) conversation enabled by Global Text Telephony (GTT) in 3GPP networks?
Option 1: Support for only Circuit Switched conversational services
Option 2: Limited to text-only media component in sessions
Option 3: Requires a separate session for each media type (voice, video, text)
Option 4: Enables character-by-character, real-time text conversation alongside other media components like voice and video
Explanation: This is correct because GTT enables the inclusion of real-time text conversations in any conversational service, whether Circuit Switched or IP-based, and allows for the simultaneous use of multiple media components (e.g., text, voice, video) within a single session. This flexibility and real-time capability are core aspects of RTT conversation as defined by GTT in 3GPP networks.