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1.1 Terminal Display
This document describes the AT interface of Huawei UMTS Module. 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. Therewith no description or definition
explain for the document interface, and no temporary support to all kinds of parameter
values, so no suggestion of usage.
In the subsequent AT command parameters, two formats are involved: <>, and [], as
described below:
<...>
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>
<LF>
Issue 18 (2009-06-22)
Parameters enclosed in angle brackets must be completed. Brackets
Carriage return character, which value is specified with command S3.
Linefeed character, which value is specified with command S4.
Commercial in Confidence
HUAWEI UMTS M2M Module V100R001
AT Command Interface Specification
1
Scope
Page 22 of 169
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