Sim900

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AT Commands Set
SIM900_ATC_V1.00

SIM900 AT Commands Set

Document Title: Version: Date: Status: Document Control ID:

SIM900 AT Commands Set 1.00 2010-1-15 Release SIM900_ATC_V1.00

General Notes SIMCOM offers this information as a service to its customers, to support application and engineering efforts that use the products designed by SIMCOM. The information provided is based uponrequirements specifically provided to SIMCOM by the customers. SIMCOM has not undertaken any independent search for additional relevant information, including any information that may be in the customer’s possession. Furthermore, system validation of this product designed by SIMCOM within a larger electronic system remains the responsibility of the customer or the customer’s system integrator. Allspecifications supplied herein are subject to change. Copyright This document contains proprietary technical information which is the property of Shanghai SIMCom Wireless Solutions Ltd, copying of this document and giving it to others and the using or communication of the contents thereof, are forbidden without express authority. Offenders are liable to the payment of damages. All rights reservedin the event of grant of a patent or the registration of a utility model or design. All specification supplied herein are subject to change without notice at any time. Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2010

SIM900R01_ATC_V1.00

2

15.01.2010

SIM900 AT Commands Set

Version History
Version V1.00 Chapter New version What is new Created on the basis of SIM900 AT TestResult

SIM900R01_ATC_V1.00

3

15.01.2010

SIM900 AT Commands Set

Contents
Version History .................................................................................................................................3 1 Introduction..................................................................................................................................10 1.1 Scope of thedocument ..........................................................................................................10 1.2 Related documents ................................................................................................................10 1.3 Conventions and abbreviations ............................................................................................. 11 1.4 AT Commandsyntax ............................................................................................................. 11 1.4.1 Basic syntax ................................................................................................................... 11 1.4.2 S Parameter syntax.........................................................................................................12 1.4.3Extended Syntax.............................................................................................................12 1.4.4 Combining AT commands on the same Command line.................................................12 1.4.5 Entering successive AT commands on separate lines.....................................................12 1.5 Supported charactersets........................................................................................................12 1.6 Flow control ..........................................................................................................................13 1.6.1 Software flow control (XON/XOFF flow control).........................................................13 1.6.2 Hardware flow control (RTS/CTS flowcontrol)............................................................14 2 AT Commands According to V.25TER ...................................................................................15 2.1 Overview of AT Commands According to V.25TER ............................................................15 2.2 Detailed Description of AT Commands According to V.25TER ...........................................16 2.2.1 A/ Re-issues...
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