Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 189 2012.12.10
Parameter
See Write Command
Response
+CIPQSEND: <n>
OK
Read Command
AT+CIPQSEND
?
Parameter
See Write Command
Response
OK
Write Command
AT+CIPQSEND
=<n>
Parameter
<n> 0 Normal mode – when the server receives TCP data, it will
responsd SEND OK.
1 Quick send mode – when the data is sent to module, it will
responsd DATA ACCEPT: <n>,<length>, while not
responding 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
Response
+CIPACK: <txlen>,<acklen>,<nacklen>
OK
Write Command
If in multi IP
connection
(+CIPMUX=1)
AT+CIPACK=<
n>
Parameters
<n> A numeric parameter which indicates the connection number
<txlen> The data amount which has been sent
<acklen> The data amount confirmed successfully by the server
<nacklen> The data amount without confirmation by the server
Response
+CIPACK: <txlen>,<acklen>,<nacklen>
OK
Execution
Command
If in single IP
connection
(+CIPMUX=0)
AT+CIPACK
Parameters
See Write Command