Specifications

Chapter 11 – GPRS Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 167
AT+CGDATA=
CONNECT The mobile is connected using default parameters
(<L2P>=”PPP” and <cid> as described for command
AT+CGDATA).
The mobile supports Layer 2 Protocol (L2P) PPP only.
Remark: 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 (e.g., Vodafone or E-Plus) require to use an APN to establish a GPRS connection. So if you use
the Microsoft Windows Dial-Up Network and ATD*9... to connect to GPRS you must provide the context
definition as part of the modem definition (Modem properties/Connection/Advanced.../Extra settings). As an
alternative, you 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.
11.23 Using the GPRS Dial Command ATD (Example)
In addition to the GPRS AT commands you can use the “D” command to dial into to the GPRS network.
There are two GPRS Service Codes for the ATD command: Values 98 and 99.
Examples:
ATD*99#
CONNECT ‘ Establish a connection by service code 99.
ATD*99*123.124.125.126*PPP*1#
CONNECT Establish a connection by service code 99, IP address 123 and L2P = PPP and
using CID 1.
The CID has to be defined by AT+CGDCONT.
ATD*99**PPP#
CONNECT Establish a connection by service code 99 and L2P = PPP.
ATD*99***1#
CONNECT Establish a connection by service code 99 and using CID 1.
ATD*99**PPP*1#
CONNECT Establish a connection by service code 99 and L2P = PPP and using CID 1. The
CID has to be defined by AT+CGDCONT.
ATD*98#
CONNECT Establish a connection by service code 98.
ATD*98*1#
CONNECT Establish an IP connection by service code 98 using CID 1. The CID has to be
defined by AT+CGDCONT.