Data Sheet

Smart Machine Smart Decision
SIM800 Series_AT Command Manual_V1.09 158 2015-08-03
GSM850_PCS_MODE
EGSM_PCS_MODE
ALL_BAND
Parameter Saving
Mode
AUTO_SAVE
Max Response
Time
-
Reference Note
 Radio settings are stored in non-volatile memory.
 The value of parameter <op_band> is different among SIM800 series
project, please refer to chapter 21 for details.
6.2.18 AT+CHF Configure Hands Free Operation
AT+CHF Configure Hands Free Operation
Response
+CHF: (list of supported <ind>s),(list of supported <state>s)
OK
Test Command
AT+CHF=?
Parameters
See Write Command
Response
+CHF: <ind>,<state>
OK
Read Command
AT+CHF?
Parameters
See Write Command
Response
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Unsolicited Result Code
+CHF: <state>
Write Command
AT+CHF=<ind>
[,<state>]
Parameters
<ind> 0 Unsolicited result code disabled
1 Unsolicited result code enabled
(non-volatile)
<state> 0 Main audio channel
1 Aux audio channel
2 Main audio channel hand free mode
3 Aux audio channel hand free mode
4 PCM channel