User's Guide

Appendix C – AT Commands
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Appendix C – AT Command List
For comprehensive information about AT Commands, please read the AT Commands Reference Manual.
AT Command List
General Commands
+CGMI Manufacturer Identification
+CGMM Request Model Identification
+CGMR Request Revision Identification
+CGSN Product Serial Number
+CSCS Select TE Character Set
+CIMI Request IMSI
+CCID Card Identification
+GCAP Capabilities List
A/ Repeat Last Command
+CPOF Power Off
+CFUN Set Phone Functionality
+CPAS Phone Activity Status
+CMEE Report Mobile Equipment Errors
+CKPD Keypad Control
+CCLK Clock management
+CALA Alarm management
Call Control Commands
D Dial command
H Hang-up Command
A Answer a Call
+CEER Extended Error Report
+VTD, +VTS DTMF Signals
ATDL Redial Last Telephone Number
AT%Dn Automatic Dialing (or SMS send) with DTR
ATSO Automatic Answer
+CICB Incoming Call Bearer
+VGR, +VGT Gain Control
+CMUT Microphone Mute Control
+SPEAKER Speaker and Microphone Selection
+ECHO Echo Cancellation
+SIDET Side Tone Modification
+VIP Initialize Voice Parameters
+CSNS Single Numbering Scheme
Network Service Commands
+CSQ Signal Quality
+COPS Operator Selection
+CREG Network Registration
+WOPN Read Operator Name
+CPOL Preferred Operator List