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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Call Control
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
59
7.2 ATD*99# - Command for Requesting the GPRS
Service
The ATD*99# command establishes a communication link between the TE and
Public Data Network (PDN). After the ITU-T V.250 ‘D’ (dialing) command is executed,
the MT enters the ITU-T V.250 online data state and starts the specified layer-2
protocol jointly with the TE. Other AT commands following this command line are not
executed. After the MT enters the online data state, its detailed behaviors depend on
the type of Packet Data Protocol (PDP).
Execution
command
ATD*99[*[<called_address>[[*[<L2P>][*[<cid>]]]]]]#
Function
Establishes a communication link between the TE and PDN.
Response
z
In case of successful execution: <CR><LF>CONNECT<CR><LF>
z
In case of failed link establishment: <CR><LF>NO
CARRIER<CR><LF>
z
In case of an error: <CR><LF>ERROR<CR><LF> or
<CR><LF>+CME ERROR: <err><CR><LF>
Parameter description
<called_address>: string, which indicates an IPv4 address in the w.x.y.z format. This
parameter is not supported currently.
<L2P>: string, which indicates the layer-2 protocol between the TE and MT.
z
“PPP”: The layer-2 protocol is PPP.
z
“1”: The layer-2 protocol is PPP.
<cid>: integer, which indicates the index value of the PDP context; ATD*99# is
equivalent to ATD*99***1#.
1-3
7.3 ATD*98# - Command for Requesting the GPRS IP
Service
The ATD*98# command establishes a communication link between the TE and PDN.
After the ITU-T V.250 ‘D’ (dialing) command is executed, the MT enters the ITU-T
V.250 online data state and starts the specified layer-2 protocol jointly with the TE.
Other AT commands following this command line are not executed. After the MT
enters the online data state, its detailed behaviors depend on the type of PDP.