SIM800 datasheet(363/380 Pages) SIMCOM

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SIM800 Series_AT Command Manual_V1.09

363

2015-08-03

There are two GPRS Service Codes for

the ATD Command: Value 88 and 99.

Establish a connection by service code

99.

Establish a connection by service code

99 and using CID 1

ATD*99#

ATD*99***1#

CONNECT

Check if the MS is connected to the

GPRS network

Detach from the GPRS network

Check if the MS is connected to the

GPRS network

AT+CGATT?

AT+CGATT=0

AT+CGATT?

+CGATT:1

+CGATT: 0

Check the class of the MS

AT+CGCLASS?

+CGCLASS:B

Establish a context using the terminal

equipment: defines CID 1

and sets the PDP type to IP, access

point name and IP address aren’t set.

AT+CGDCONT=1,

"IP","CMNET"

ATD*99#

CONNECT

Cancel a context using the terminal

equipment

Pause data transfer and enter Command

mode by +++

Stop the GPRS data transfer

AT+CGDCONT=1,

"IP","CMNET"

ATD*99#

+++

ATH

CONNECT

Reconnect a context using the terminal

equipment

Resume the data transfer

AT+CGDCONT=1,

"IP","CMNET"

ATD*99#

+++

ATO

CONNECT

*Quality of Service (QOS) is a special parameter of a CID which consists of several parameters

itself.

The QOS consists of

The precedence class

The delay class

The reliability class

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