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SIM800 Series_AT Command Manual_V1.09

2015-08-03

Contents

Version History.........................................................................................14

1 Introduction............................................................................................22

1.1 Scope of the document .......................................................................................22

1.2 Related documents..............................................................................................22

1.3 Conventions and abbreviations ..........................................................................22

1.4 AT Command syntax ..........................................................................................22

1.4.1 Basic syntax ...................................................................................................................23

1.4.2 S Parameter syntax.........................................................................................................23

1.4.3 Extended Syntax.............................................................................................................23

1.4.4 Combining AT commands on the same Command line.................................................23

1.4.5 Entering successive AT commands on separate lines.....................................................24

1.5 Supported character sets .....................................................................................24

1.6 Flow control .......................................................................................................24

1.6.1 Software flow control (XON/XOFF flow control).........................................................24

1.6.2 Hardware flow control (RTS/CTS flow control)............................................................25

1.7 Definitions ..........................................................................................................25

1.7.1 Parameter Saving Mode .................................................................................................25

1.7.2 Max Response Time.......................................................................................................26

2 AT Commands According to V.25TER ................................................27

2.1 Overview of AT Commands According to V.25TER .........................................27

2.2 Detailed Description of AT Commands According to V.25TER ........................28

2.2.1 A/ Re-issues the Last Command Given.......................................................................28

2.2.2 ATA Answer an Incoming Call....................................................................................28

2.2.3 ATD Mobile Originated Call to Dial A Number..........................................................29

2.2.4 ATD><n> Originate Call to Phone Number in Current Memory................................31

2.2.5 ATD><str> Originate Call to Phone Number in Memory Which Corresponds to

Field <str>...............................................................................................................................32

2.2.6 ATDL Redial Last Telephone Number Used...............................................................34

2.2.7 ATE Set Command Echo Mode ..................................................................................35

2.2.8 ATH Disconnect Existing Connection.........................................................................35

2.2.9 ATI Display Product Identification Information .........................................................35

2.2.10 ATL Set Monitor speaker loudness............................................................................36

2.2.11 ATM Set Monitor Speaker Mode ..............................................................................36

2.2.12 +++ Switch from Data Mode or PPP Online Mode to Command Mode ..................36

2.2.13 ATO Switch from Command Mode to Data Mode....................................................37

2.2.14 ATP Select Pulse Dialling..........................................................................................37

2.2.15 ATQ Set Result Code Presentation Mode..................................................................38

2.2.16 ATS0 Set Number of Rings before Automatically Answering the Call.....................38

2.2.17 ATS3 Set Command Line Termination Character .....................................................39

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