Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 130 12/24/2010
attached/detached) should be sent to the terminal.
0 not send unsolicited event code
1 send unsolicited event code
<headset attach> a numeric parameter which indicates whether a
headset has been attached or not
0 not attached
1 attached
Reference Note
This command is related to the actual module.
6.2.14 AT+CEXTBUT Headset Button Status Reporting
AT+CEXTBUT Headset Button Status Reporting
Response
+CEXTBUT: (list of supported <mode>s)
OK
Test Command
AT+CEXTBUT=
?
Parameter
See Write Command
Response
+CEXTBUT: <mode>,<headset button press>
OK
Read Command
AT+CEXTBUT?
Parameters
See Write Command
Response
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Unsolicited result code
+CEXTBUT: <mode>,<headset button press>
Write Command
AT+CEXTBUT=
<mode>
Parameters
<mode> a numeric parameter which indicates whether an unsolicited
event code (indicating whether the headset button has been
pressed) should be sent to the terminal.
0 not send unsolicited event code
1 send unsolicited event code
<headset button press> a numeric parameter which indicates
whether a headset button has been pressed or not
0 not pressed
1 pressed