Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  2  12/24/2010 
Document Title: 
SIM900 AT Command Manual 
Version: 
1.03 
Date: 
2010-12-24 
Status: 
Release 
Document Control ID: 
SIM900_AT Command Manual_V1.03 
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 
upon requirements 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. All specifications 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 reserved in 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 










