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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Overall Description
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1
1 Overall Description
This chapter briefly describes the contents and organization of this document and
focuses on the basic knowledge of AT command interfaces.
1.1 Content Description
This document describes the AT command interface specification that is supported by
Huawei terminal product MG323 module. This document describes certain AT
commands (implemented by terminal devices) of international standards such as
3GPP TS 27.007 3d0, 3GPP TS 27.005 320, and ITU-T V.250 [14] according to the
requirements of terminal devices. In addition, this document describes the proprietary
AT command interfaces that are implemented by terminal devices. These proprietary
AT command interfaces help implement a certain function.
This document does not describe the interfaces that have been defined by standards
or implemented by the mobile terminal (MT) but are not required by the MG323. The
description of AT command interfaces covers only the data packets of interfaces and
the methods and processes for the terminal equipment (TE) and the MT to use
interfaces, excluding the contents that are not directly related to interfaces. In
addition, this document describes only the AT command interfaces falling within the
range of Rm interfaces between the TE and MT, excluding the AT command
interfaces falling within the range of Um interfaces between the MT and IWF.
1.2 Product Description
HUAWEI MG323 (the MG323) is a 2G B2B module product with 50 pins, supporting
four GSM frequency bands, that is, GSM850, GSM900, DCS1800, and PCS1900.
The MG323 is mainly applicable to industrial modules.
The MG323 provides one external UART interface and supports functions such as
SMS, phone book management, data service, and embedded TCP/UDP.