Question: For an IMS (IP Multimedia Subsystem) capable UE supporting voice, which of the following ROHC (Robust Header Compression) profile support configurations is CORRECT?
Option 1: Only 0x0000 (ROHC uncompressed) and 0x0001 (ROHC RTP)
Option 2: Only 0x0000 (ROHC uncompressed), 0x0002 (ROHC UDP), and 0x0101 (ROHCv2 RTP)
Option 3: 0x0000 (ROHC uncompressed), 0x0003 (ROHC ESP), and 0x0104 (ROHCv2 IP)
Option 4: 0x0000 (ROHC uncompressed), 0x0001 (ROHC RTP), and 0x0002 (ROHC UDP)
Explanation: According to the specifications for IMS capable UEs that support voice, these devices must support ROHC profiles 0x0000 (ROHC uncompressed) for baseline compatibility, 0x0001 (ROHC RTP) for efficient real-time audio transport, and 0x0002 (ROHC UDP) for efficient handling of user datagram protocol packets. This combination optimizes voice codec transmissions over IMS, ensuring reliability and efficiency in header compression for PDCP SDUs at rates matching supported IMS voice codecs.