Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  127  12/24/2010 
OK 
Parameter 
See Write Command 
Response 
OK 
ERROR 
Write Command 
AT+CMOD=[<m
ode>] 
Parameter 
<mode> 0 Only single mode is supported 
Reference 
Note 
6.2.11 AT+CFGRI Indicate RI When Using URC 
AT+CFGRI Indicate RI When Using URC 
Response 
+CFGRI: <status> 
OK 
Read Command 
AT+CFGRI? 
Parameter 
See Write Command 
Response 
OK 
ERROR 
Write Command 
AT+CFGRI=<st
atus> 
Parameter 
<status> 1 on 
0 off 
Reference 
Note 
6.2.12 AT+CLTS Get Local Timestamp 
AT+CLTS Get Local Timestamp 
Test Command 
AT+CLTS=? 
Response 
+CLTS: "yy/MM/dd,hh:mm:ss+/-zz" 
OK 
Response 
OK 
ERROR 
Write Command 
AT+CLTS= 
<mode> 
Parameter 
<mode> 










