Manual
     Smart Machine Smart Decision 
SIM800 Series_AT Command Manual_V1.09  222  2015-08-03 
name>),(<port>) 
OK 
Parameters 
See Write Command 
Response 
1)If single IP connection (+CIPMUX=0) 
If format is right response 
OK 
otherwise response 
If error is related to ME functionality: 
+CME ERROR <err> 
Response when connection exists 
ALREADY CONNECT 
Response when connection is successful 
CONNECT OK 
Otherwise 
STATE: <state> 
CONNECT FAIL 
2)If multi-IP connection 
(+CIPMUX=1) 
If format is right 
OK, 
otherwise response 
If error is related to ME functionality: 
+CME ERROR <err> 
Response when connection exists 
<n>,ALREADY CONNECT 
If connection is successful   
<n>,CONNECT OK 
Otherwise 
<n>,CONNECT FAIL 
Write Command 
1)If single IP 
connection 
(+CIPMUX=0) 
AT+CIPSTART=
<mode>,<IP 
address>,<port> 
Or 
AT+CIPSTART=
<mode>,<domai
n name>,<port> 
2)If multi-IP 
connection 
(+CIPMUX=1) 
AT+CIPSTART=
<n>,<mode>,<ad
dress>,<port> 
AT+CIPSTART=
<n>,<mode>,<do
main name>, 
<port> 
Parameters 
<n> 0..5  A numeric parameter which indicates the connection 
number 
<mode> A string parameter which indicates the connection type 
  "TCP" Establish a TCP connection 
  "UDP" Establish a UDP connection 
<IP address> A string parameter which indicates remote server IP address 
<port>  Remote server port 
<domain name> A string parameter which indicates remote server domain 
name 
<state> A string parameter which indicates the progress of connecting










