Data Sheet

Smart Machine Smart Decision
Set the QOS of CID 1 to not present. AT+CGQREQ=1 OK
Once defined, the CID can be activated.
Activate CID 1, if the CID is already AT+CGACT=1,1 OK
active, the mobile returns OK at once.
If no CID is defined the mobile responds
+CME ERROR: invalid index. AT+CGACT=1,3 +CME ERROR: requested
Note: If the mobile is NOT attached service option not
by AT+CGATT=1 before activating, the subscribed.
attachment is automatically done by the
AT+CGACT Command.
Use the defined and activated CID
to get online. The mobile can be
connected using the parameters of
appointed CID or using default
AT+CGDATA="PPP", CONNECT
1
parameter
The mobile supports Layer 2 Protocol (L2P) PPP only.
Note: If the mobile is NOT attached by AT+CGATT=1 and the CID is NOT activated before
connecting, attaching and activating is automatically done by the AT+CGDATA Command.
Some providers require using an APN to establish a GPRS connection. So if user uses the
Microsoft Windows Dial-Up Network and ATD*9… to connect to GPRS, user must provide the
context definition as part of the modem definition (Modem properties/Connection/Advanced…
/Extra settings.) As an alternative, user can define and activate the context in a terminal program
(e.g. Microsoft HyperTerminal) and then use the Dial-Up Network to send only the ATD
Command.
20.9 TCPIP Commands
Please refer to SIM800 Series_TCPIP_Application Note.doc
20.10 IP Commands
Please refer to SIM800 Series_IP_Application Note.doc. Chapter 3.1 describles how to config
bearer contexts of HTTP and FTP applications.
20.11 PING Commands
Demonstration Syntax Expect Result
Ping Request
AT+CGATT ? +CGATT: 1
OK
AT+CSTT=”CMNET” OK
SIM800 Series_AT Command Manual_V1.05 353 2014-07-31