Scope; Terminal Display; Interface Overview - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification

1.1 Terminal Display

This document describes the AT interface of Huawei UMTS Module MU509. The
description on the AT interface is only limited to the interface packet itself, the usage
and use procedure of TE and MS, and does not cover the contents which are not
directly related to the interface.

1.1.1 Interface Overview

HUAWEI UMTS Module is a wireless terminal of UART or USB interface. It is used to
provide data service, voice and SMS functions.
This document describes the AT interface.
In the subsequent AT command parameters, two formats are involved: <> and [], as
described below:
<...>: Parameters enclosed in angle brackets must be completed. Brackets
themselves do not appear in the command line.
[...]: Optional subparameter of a command is enclosed in square brackets. Brackets
themselves do not appear in the command line or response.
<CR>: Carriage returns character, which value is specified with command S3.
<LF>: Linefeed character, which value is specified with command S4.
Issue 04 (2013-01-28)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.

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