Data Sheet

Smart Machine Smart Decision
SIM800 Series_AT Command Manual_V1.09 364 2015-08-03
The peak throughput class
The mean throughput class
And is decided in "requested QOS” and "minimum acceptable QOS”.
All parameters of the QOS are initiated by default value (=0) except the reliability class is 3. To
define a QOS use the AT+CGQREQ or AT+CGQMIN Command.
Overwrite the precedence class of
QOS of CID 1 and sets the QOS of
CID 1 to be present
AT+CGQREQ=1,0,0,3
,0,0
OK
Response: all QOS values of the
activated CID.
AT+CGQREQ? +CGQREQ: 1,0,0,3,0,0
+CGQREQ: 2,0,0,3,0,0
+CGQREQ: 3,0,0,3,0,0
OK
Set the QOS of CID 1 to not present.
Once defined, the CID can be activated.
AT+CGQREQ=1 OK
Activate CID 1, if the CID is already
active, the mobile returns OK at once.
If no CID is defined the mobile responds
+CME ERROR: invalid index.
Note: If the mobile is NOT attached
by AT+CGATT=1 before activating, the
attachment is automatically done by the
AT+CGACT Command.
AT+CGACT=1,1
AT+CGACT=1,3
OK
+CME ERROR: requested
service option not
subscribed.
Use the defined and activated CID
to get online. The mobile can be
connected using the parameters of
appointed CID or using default
parameter
AT+CGDATA="PPP",
1
CONNECT
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