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Appendix C: Command Reference
BASIC AT COMMANDS (default values are highlighted)
Command
Description
AT
Attention characters
ATA
Answer command
A/
Re-Execute last command
Dial Modifiers
Dial
Options
Description
ATD
none
Dial. (ATD followed by phone number)
ATDP
none
Pulse (rotary) dial. 10 pulses per second.
ATDT
none
Touch tone dial (DTMF).
ATDW
1-255sec
Wait for dial-tone. Default is 50 seconds.
ATD,
0-255sec
Pause. Default is 2 seconds.
ATD@
none
Wait for quiet answer.
ATD!
none
Initiate hook flash.
ATD;
none
Return to command state after dialing.
Command
Description
Command Character Echo
ATE0
Disables echoing of the commands to the screen.
ATE1
Enables echoing of the commands to the screen. (default)
Switch Hook Control
ATH0
Instructs modem to go on-hook.
ATH1
Instructs modem to go off-hook.
Identification
ATI0
Displays the product identification code.
ATI1
Displays the checksum.
Speaker volume
ATL0,1
Low volume.
ATL2
Medium volume. (default)
ATL3
High volume.
Command Reference
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