MC55 AT Command Set

10.19 Using GPRS AT commands (Examples)

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mobile

10.19Using GPRS AT commands (Examples)

Examples

EXAMPLE 1

Defining and using a Context Definition ID (CID):

Every time a CID is used as a parameter for a GPRS command the CID has to be defined before by using the AT+CGDCONT command. To get the parameter of a CID use the AT+CGDCONT read option. If the response of 'AT+CGDCONT?' is OK only, there is no CID defined.

AT+CGDCONT?

 

OK

There is no CID defined

All parameters of the CID are initiated by NULL or not present values, and the CID itself is set to be undefined. To define a CID use the AT+CGDCONT command with at least one CID parameter. At the moment the mobile supports CID 1 and CID 2 by using the AT+CGDCONT command.

Define CID 1 and set the PDP type to IP, access point name and IP address are not set:

AT+CGDCONT=1,"IP"

OK

Define CID 2 and sets PDP type, APN and IP addr:

AT+CGDCONT=2,"IP", "internet.t-d1.gprs", 111.222.123.234

OK

A following read command will respond:

AT+CGDCONT?

+CGDCONT:1,"IP","","",0,0

+CGDCONT:2,"IP","internet.t-d1.gprs",111.222.123.234

OK

Set the CID 1 to be undefined:

AT+CGDCONT=1

OK

A following read command will respond:

AT+CGDCONT? +CGDCONT:2,"IP","internet.t-d1.gprs",111.222.123.234

OK

EXAMPLE 2

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

-the peak throughput class

-the mean throughput class

and is divided in "requested QoS" and "minimum acceptable QoS".

MC55_ATC_V01.05

Page 278 of 469

2/10/04

Confidential / Released

 

 

Page 278
Image 278
Siemens MC55 manual Using Gprs AT commands Examples, AT+CGDCONT=1,IP, AT+CGDCONT=2,IP, internet.t-d1.gprs