Quectel M35, Command Manual

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GSM/GPRS Module
M35 AT Commands Manual
M35_AT_Commands_Manual Confidential / Released 11 /
186
1
Introduction
1.1. Scope of the Document
This document presents the AT Commands Set for Quectel cellular engine M35.
1.2. AT Command Syntax
The “ AT” or “ at ” prefix must be set at the beginning of each command line. To terminate a command line
enter <CR> . Commands are usually followed by a response that includes
“ <CR><LF><response><CR><LF> ”. Throughout this document, only the responses are presented,
“ <CR><LF>” are omitted intentionally.
The AT Commands Set implemented by M85 is a combination of GSM07.05, GSM07.07 and ITU-T
recommendation V.25ter and the AT Commands developed by Quectel.
All these AT Commands can be split into three categories syntactically: “
basic ”, “ S parameter ”, and
“ extended ”. They are listed as follows:
 Basic syntax
These AT Commands have the format of “ AT<x><n> ”, or “ AT&<x><n> ”, where “ <x> ” is the command,
and “ <n> ” is/are the argument(s) for that command. An example of this is “ ATE<n> ”, which tells the DCE
whether received characters should be echoed back to the DTE according to the value of “ <n> ”. “ <n> ” is
optional and a default will be used if it is missing.

S parameter syntax
These AT Commands have the format of “ ATS<n>=<m> ”, where “ <n> ” is the index of the S register to set,
and “ <m> ” is the value to assign to it. “ <m> ” is optional; if it is missing, then a default value is assigned.
 Extended syntax
These commands can be operated in several modes, as following table: