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The result value can be displayed during communication. Generally, the result will
be OK. According to the ATV command, the result can be displayed as Words or
numeral letters. (ATV0 : Display as numeral letters, ATV1: Display as English
words)
Basic AT Commands
A/
Repeats the previous command in the buffer
ATA
Responds manually to incoming RING signals
+++
Switches from on-line mode to command mode
ATO
Switches from command mode to on-line mode
ATEn
Echo control
E0
Disables echoing of the commands to the screen
E1
Enables echoing of the commands to the screen
ATDT phone number
ATDP phone number
ATHn
Hook control
H0
On-Hook (same as hang-up)
H1
Off-Hook (same as hold-on)
ATLn
Modem speaker loudness control
L0~1
Low volume
L2
Medium volume
L3
High volume
ATMn
Modem speaker control
M0
Disables modem speaker
M1
Enables only when in connection procedure
M2
Enables always
M3
Enables until carrier has been detected after connection
ATS0=n Sets S0 register value (n range : 0~255). Sets the number of incoming
ring signals before answering. Modem responds after ringing as many
Touch tone dial
Pulse dial
Using the Modem 47
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