ZyXEL U-1496S Plus User Guide - Page 90
<cml> = 1, 9.6 Kbps CELP Code Excited Linear Prediction
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OK with between each line. AT+VSD=? This command causes the DCE to report the permitted range of and . The response is: (0-31),(0-255) OK with between each line. AT+VSM= This command causes the DCE to select a compression method as follows: = 1, 9.6 Kbps CELP (Code Excited Linear Prediction) = 2 (Default), 19.2 Kbps 2-bit ADPCM = 3, 28.8 Kbps 3-bit ADPCM Note: Only PLUS models support CELP mode. AT+VSM? This command causes the DCE to report current compression settings in the following form: ;; OK with between each line. Where : compression method label. : silence compression sensitivity. : voice sampling rate. AT+VSM=? This command causes the DCE to report the compression methods supported. The response is as follows: 1;CELP;1;0;(9600) 2;ADPCM;2;0;(9600) 3;ADPCM;3;0;(9600) OK with between each line. The first item in each line is the compression method label; the second item is the compression scheme; the third item is number of bits per sample; the fourth item is the silence detection threshold level; the fifth item is the sampling rate. AT+VTS=