Data Sheet
     Smart Machine Smart Decision 
SIM800 Series_AT Command Manual_V1.09  180  2015-08-03 
Response 
+GSMBUSY: (0,1,2) 
OK 
Test Command 
AT+GSMBUSY=
? 
Parameter 
See Write Command 
Response 
+GSMBUSY: <mode> 
OK 
Read Command 
AT+GSMBUSY? 
Parameter 
See Write Command 
Response 
OK 
If error is related to ME functionality: 
+CME ERROR: <error> 
Write Command 
AT+GSMBUSY=
<mode> 
Parameter 
<mode> 0 Enable incoming call 
 1 Forbid all incoming calls 
2 Forbid incoming voice calls but enable CSD calls 
Parameter Saving 
Mode 
NO_SAVE 
Max Response 
Time 
- 
Reference  Note 
The parameter is not saved if the module power down. 
6.2.46 AT+CEMNL Set the List of Emergency Number 
AT+CEMNL Set the List of Emergency Number 
Response 
+CEMNL: (0-1),(1-11),("0"-"999")… 
OK 
Test Command 
AT+CEMNL=? 
Parameter 
See Write Command 
Response 
+CEMNL: <mode>[,<amount>,<emergency numbers>] 
OK 
Read Command 
AT+CEMNL? 
Parameter 
See Write Command 










