At+Btath Hung Up Voice Call; At+Btvgs Configure Voice Volume; At+Btvgm Configure Mic Gain Level - SimTech SIM800 Series Application Notes

2.17. AT+BTATH Hung up voice call

AT+BTATH Hung up voice call
Execute Command
AT+BTATH
Note

2.18. AT+BTVGS Configure voice volume

AT+BTVGS Configure voice volume
Test Command Response
AT+BTVGS=? +BTVGS: (<gain> range)
OK
Module is Earphone mode
Read Commnad Response
AT+BTVGS? +BTVGS: <gain>
OK
Write Command Response
AT+BTVGS=<ga OK
in>
Parameter
<gain>
This command is used configure call volume when the module is
connected with smartphone as an earphone
Note For some smartphone,after connected with BT earphone,the current call
volume may not be transmitted to earphone,thus the return value of the
read command may be 0.But after setting once,the value would be correct.

2.19. AT+BTVGM Configure MIC gain level

AT+BTVGM Configure MIC gain level
Test Command Response
AT+BTVGM=? +BTVGM: (<gain> range)
OK
Read Command Response
AT+BTVGM? +BTVGM: <gain>
OK
SIM800 Series_Bluetooth_Application_V1.02
Response
OK
When module connected with smartphone as an earphone, the incoming
call would be hung up through this command
volume
Smart Machine Smart Decision
19 2014-06-30