16–21
Voice file playing via internal speaker.
← 2;ADPCM;2;0;(9600)
3;ADPCM;3;0;(9600)
30;ADPCM;3;0;(9600)
4;ADPCM;4;0;(9600)
OK
AT+VSM=4 → Selects 4-bit ADPCM
compression method.
← OK
AT+VLS=1 → Activates the telephone
set on the PHONE jack.
← VCON
AT+VRX → Starts recording.
← CONNECT
← <DATA>
<DLE><!> → Stops recording.
← <DATA>
← <DLE><ETX>
← OK Returns to the command
state.
AT+VLS=0 → Deactivates the telephone
set on the PHONE Jack.
← OK
AT+FCLASS=0 → Returns to the data mode.
← OK
DTE DCE Description
AT+FCLASS=8 → Switches to voice mode.
← OK
AT+VSM=? →
DTE DCE Description