Data Sheet

SIM900 AT Commands Set
SIM900_ATC_V1.00 173 15.01.2010
Test Command
AT+CIPSHUT=?
Response
OK
Execution
Command
AT+CIPSHUT
Response
If close successfully:
SHUT OK
If close fail:
ERROR
Note Except at the status of IP INITIAL, you can close moving scene by
AT+CIPSHUT. After closed, the status is IP INITIAL.
Reference Note
z If this command executed in multi-connection mode, all of the IP
connection will be shut
8.2.8 AT+CLPORT Set Local Port
AT+CLPORT Set Local Port
Test Command
AT+CLPORT=?
Response
+CLPORT: (list of supported <port>s)
OK
Parameter
See Write Command
Read Command
AT+CLPORT?
Response
TCP: <port>
UDP: <port>
OK
Parameter
See Write Command
Write Command
AT+CLPORT=<
mode>,<port>
Response
OK
ERROR
Parameters
<mode> a string parameter(string should be included in quotation
marks) which indicates the connection type
“TCP” TCP local port
“UDP” UDP local port
<port> 0-65535 a numeric parameter which indicates the local port
0 is default value, it can be dynamically allocated a port.
Reference Note
z This command will be effective only in single connection mode
(+CIPMUX=0) and when module as a Client