Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 194 2012.12.10
Response
1）If in single connection mode (+CIPMUX=0)
OK
STATE: <state>
2) If in multi-connection mode (+CIPMUX=1)
OK
STATE: <state>
If the module is set as server
S: 0,<bearer>,<port>,<server state>
C: <n>,<bearer>,<TCP/UDP>,<IP address>,<port>,<client state>
Execution
Command
AT+CIPSTATUS
Parameters
<n> 0-7 A numeric parameter which indicates the connection
number
<bearer> 0-1 GPRS bearer, default is 0
<server state> OPENING
LISTENING
CLOSING
<client state> INITIAL
CONNECTING
CONNECTED
REMOTE CLOSING
CLOSING
CLOSED
<state> A string parameter(string should be included in
quotation marks) which indicates the progress of
connecting
0 IP INITIAL
1 IP START
2 IP CONFIG
3 IP GPRSACT
4 IP STATUS
5 TCP CONNECTING/UDP CONNECTING
/SERVER LISTENING
6 CONNECT OK
7 TCP CLOSING/UDP CLOSING
8 TCP CLOSED/UDP CLOSED
9 PDP DEACT
In Multi-IP state:
0 IP INITIAL
1 IP START