1. [1] ITU-T Rec. G.723.1, Dual Rate Speech Coder for Multimedia Communications at 5.3 and 6.3kbit/s, March 1996.
2. [2] ITU-T Rec. G.729.1, G.729-based embedded variable bit-rate coder: An 8-32kbit/s Scalable Wideband Coder Bitstream Interoperable with G.729, May 2006.
3. [3] ITU-T Rec.G.729, Coding of Speech at 8kbit/s using Conjugate Structure Algebraic Code Excited Linear Prediction (CS-ACELP), March 1996.
4. [4] ITU-T Rec. H.324, Terminal for Low Bit Rate Multimedia Communication, March 1996.
5. [5] ITU-T Rec. H.323, Visual Telephone Systems and Equipment for Local Area Networks Which Provide a Non-guaranteed Quality of Service, March 1996.