1 Introduction
1.1 Scope
The present document describes the AT Command Set for the SIMCom Module:
SIM5350
More information about the SIMCom Module which includes the Software Version information can be
retrieved by the command AT I. In this document, a short description, the syntax, the possible setting values
and responses, and some examples of AT commands are presented.
Prior to using the Module, please read this document and the Version History to know the difference
from the previous document.
In order to implement communication successfully between Customer Application and the Module, it
is recommended to use the AT commands in this document, but not to use some commands which are not
included in this document.
1.2 References
The present document is based on the following standards:
[1] ETSI GSM 01.04: Abbreviations and acronyms.
[2] 3GPP TS 27.005: Use of Data Terminal Equipment – Data Circuit terminating Equipment (DTE –
DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS).
[3] 3GPP TS 27.007: AT command set for User Equipment (UE).
[4] WAP-224-WTP-20010710-a
[5] WAP-230-WSP-20010705-a
[6] WAP-209-MMSEncapsulation-20010601-a
1.3 Terms and abbreviations
For the purposes of the present document, the following abbreviations apply:
AT ATtention; the two-character abbreviation is used to start a command line to be sent
from TE/DTE to TA/DCE
CSD Circuit Switched Data
DCE Data Communication Equipment; Data Circuit terminating Equipment
DCS Digital Cellular Network
DTE Data Terminal Equipment
DTMF Dual Tone Multi–Frequency
EDGE Enhanced Data GSM Environment
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