Data Sheet

SIM900 AT Commands Set
SIM900_ATC_V1.00 171 15.01.2010
time that send data automatically with the Command of
AT+CIPATS.
z Only send data at the status of established connection
8.2.4 AT+CIPQSEND Select Data Transmitting Mode
AT+CIPQSEND Select Data Transmitting Mode
Test Command
AT+CIPQSEND
=?
Response
+CIPQSEND: (0,1)
OK
Parameter
See Write Command
Read Command
AT+CIPQSEND
?
Response
+CIPQSEND: <n>
OK
Parameters
See Write Command
Write Command
AT+CIPQSEND
=<n>
Response
OK
Parameters
<n> 0 Normal mode – when the server receives TCP data, it will
response SEND OK
1 Quick send mode – when the data is sent to module, it will
response DATA ACCEPT, while not response SEND OK
Reference Note
8.2.5 AT+CIPACK Query Previous Connection Data Transmitting State
AT+CIPACK Query Previous Connection Data Transmitting State
Test Command
AT+CIPACK=?
Response
OK
Execution
Command
If in single IP
connection
(+CIPMUX=0)
AT+CIPACK
Response
+CIPACK: <txlen>, <acklen>, <nacklen>
Parameters
See write command
Write Command
If in multi IP
Response
+CIPACK: <txlen>, <acklen>, <nacklen>