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G. standardsThe following is a summary of digital voice standards as well as DSL standards from the ITU. The voice standards are used in the speech codecs that sample voice and convert it into digital code. The DSL standards are used to convert telephone lines to data lines. See G.711, G.bond and DSL.
VOICE STANDARDSCodec --- Rates ---G. Coding Sampling BitNumber Method (kHz) (kBps) G.711 PCM mu-Law 8 64 G.711 PCM A-Law 8 64 G.721 ADPCM 8 32 G.722 ASPCM 7 48/56/64 G.722.1 MLT 16 24/32 G.722.2 ACELP 16 6.6 to 23.85 G.723 (withdrawn) G.723.1 MP-MLQ 8 6.3 G.723.1 ACELP 8 5.3 G.726 ADPCM 8 16/24/32/40/64 G.727 ADPCM 8 16/24/32/40/64 G.728 LD-CELP 8 16 G.729 CS-ACELP 8 8 DSL STANDARDS (See DSL). G.991.1 HDSL G.991.2 SHDSL - Single Pair HDSL G.992.1 ADSL G.992.2 Splitterless ADSL G.992.3 ADSL2 G.992.4 Splitterless ADSL2 G.992.5 ADSL2+ G.993.1 VDSL G.993.2 VDSL2 G.994.1 Handshaking Procedures G.995.1 Overview G.996.1 Test Procedures G.997.1 Physical Layer Management G.9700 Gfast G.9701 Gfast
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