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 MC509 module. This document describes certain AT
commands (implemented by terminal devices) of international standards such as
Third Generation Partnership Project (3GPP) TS 27.007 3d0, 3GPP TS 27.005 320,
and International Telecommunication Union-Telecommunication Standardization
Sector (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.
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 MC509. 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 interworking
function (IWF).
1.2 Product Description
HUAWEI MC509 (the MC509) is an CDMA B2B module product with 50 pins,
supporting two CDMA frequency bands, that is, CDMA800 and CDMA1900.
The MC509 provides one external UART interface and supports functions such as
short message service (SMS), phone book, data service, and embedded TCP/UDP.
1.3 Instructions for Use
You are not advised to use various parameter values that are not described in this
document or not supported currently as described in this document.
The AT command parameters described in the following chapters are in two formats:
<> and [], which are described as follows:
<...> The parameter inside these angle brackets is mandatory. The <> does not
exist in a command.
[...] The parameter inside these square brackets is optional. The [] does not exist
in a command or a response.
<CR> Carriage return character. For details, see the description in S3.
<LF> Line feed character. For details, see the description in S4.
When an AT command is sent, the characters contained in the name and parameters
(excluding SMSs, phone book, and operator name) of the AT command are case
insensitive. All the characters contained in the result returned by the AT command
must be in upper case (excluding SMSs, phone book, operator name and error
messages).
When an AT command is sent, string parameters can be placed inside quotation
marks or not.
Click here to download HUAWEI wireless module pdf datasheet HUAWEI_MC509_CDMA_LGA_Module_AT_Command_Interface_Specification
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