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All,
The following information is provided to the 802.20 WG as FYI. It is intended to provide references required in section 4.3.8 of the 802.20 EC document (v12).
Regards, Dan
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3GPP and 3GPP2 have adopted ITU H.324M Recommendation as the protocol for 3G conversational video-telephony. It is commonly referred to as 3G-324M.
The umbrella standard includes specific ITU Recommendations for audio, video and control:
Audio: G.722.2 (AMR-WB), G.723.1 Video: MPEG-4 (ISO/IEC 14496) (including H.261 and H.263 video codecs, but not the newer H.264 codec) Control: H.223 A/B, H.245
G.722.2 generates speech coding at five rates (in kbps): 6.60, 8.85, 12.65, 15.85, 23.85 G.723.1 is a 3.4 kHz speech codec and generates data at rates of 5.3 and 6.4 kbps. H.261 is a video codec that generates data at p*64 kbps H.263 is a video codec that can generate data rates from below 64 kbps up to 2 Mbps. H.264/AVC is a new video codec in cooperation with ISO (JVT) and is included in Part 10 of the ISO MPEG-4 standard. H.264 includes major improvements over H.261 and H.263 and is more robust in wireless mobile environments. H.223 A/B is a multiplexing (audio, video, data) protocol for low bit rate multimedia packet switched communications. Extensions A and B were developed for error-prone mobile wireless environments. H.245 is the control protocol for H.323 and H.324 IP multimedia systems.
3GPP Related Specifications: - TS 26.233_v420_Streaming Service - TS 26.234_v600_Streaming service & Codecs - TS 26.235_v610_Conversational MM & Codecs - TS 26.912 Performance Evaluation of H.324
3GPP2 Related Specifications: - H.263 is mandatory for video telephony - EVRC speech codec is mandatory for video services - MPEG-4 support (3G-324M) - TIA-934 series
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