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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Data Services
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
119
9.5.1 Querying the Range of PDP Related Parameters
Test
command
AT+CGDCONT=?
Function
Returns the parameter range supported by this command.
Response
z
In case of successful execution:
<CR><LF>+CGDCONT: (range of supported
<cid>s),<PDP_type>,,,(list of supported<d_comp>s),(list of
supported<h_homp>s) <CR><LF>
<CR><LF>OK<CR><LF>
z
In case of an error during command execution:
<CR><LF>ERROR<CR><LF>
z
In case of an error related to the MT: <CR><LF>+CME ERROR:
<err><CR><LF>
Parameter description
<cid>: numeric parameter, which indicates the index value of the PDP context. Other
commands related to the PDP context can invoke the saved settings through this
index value. For a TE-MT interface, this parameter is local and can be used for other
commands related to the PDP context.
Value range: 1–3
<PDP_type>: character type parameter, which indicates the type of packet exchange
protocol.
“IP”: Internet Protocol (IP)
<APN>: character type parameter, which indicates the domain name of the access
point that connects to the GGSN or external networks.
<PDP_addr>: character type parameter. This parameter identifies the address that is
assigned to the specified PDP context. If the value of this parameter is null or omitted,
the TE provides other address during the PDP startup process. Otherwise, a dynamic
address must be requested. Even if an address is assigned during PDP
establishment, null is returned after the read command is sent. To read this address,
run AT+CGPADDR.
<d_comp>: numeric parameter, which controls the data compression of PDP
(available for SNDCP only. For details, see the 3GPP TS 44.065.)
0 (default value): no compression
<h_comp>: numeric parameter, which controls the head compression of PDP (for
details, see the 3GPP TS 44.065 and 3GPP TS 25.323).
0 (default value): no compression