Digicom pocket GSM User Manual page 42

PocketGSM
AT+VTD Length of the DTMF tone
This command is used to increase or reduce the length of the DTMF tone, sent with the
command AT+VTS.
Command
AT+VTD=<time>
AT+VTD?
Default: AT+VTD=1
<time> DTMF tones
1 100 milliseconds
2 200 milliseconds
... ...
10 1 second
... ...
AT+VGR Speaker gain control
This command is used to set the receiving level of the speaker.
(See Appendix A for the values of the speaker gain).
Command
AT+VGR=<val>
AT+VGR?
AT+VGT Microphone gain control
This command is used to set the transmission level of the microphone.
(See Appendix A for the values of the microphone gain).
Command
AT+VGT=<val>
AT+VGT?
Possible answers
OK / ERROR
+VTD: 1
Possible answers
OK / ERROR
+VGR: 64
Possible answers
OK / ERROR
+VGT: 64
4.22
AT Commands
Action
Sets the length of the DTMF tone
Shows the current settings
Action
Sets the receiving level of the speaker
Shows the current settings
Action
Sets the transmission level of
the microphone
Shows the current settings