9
Enters command mode on detecting ON-to-OFF
transition of DTR.
Goes ON-HOOK on detecting ON-to-OFF transition of
DTR. (Default)
AT&D1
AT&D2
AT&D3
Resets the modem on detecting ON-to-OFF transition of
DTR.
AT&F
n
Restore Factory Configration(Profile)
Restore factory configration
n
, where
n
= 0~9.
AT&G
n
Select Guard Tone
Disables guard tone (Default)
Selects 550 Hz guard tone
AT&G0
AT&G1
AT&G2
Selects 1800 Hz guard tone
AT&K
n
Serial Port Flow Control
Disables flow control.
Enables unidirectional RTS/CTS hardware flow control.
Enables unidirectional X
ON
/X
OFF
software flow control.
Enables bi-directional RTS/CTS hardware flow control.
(Default)
Enables bi-directional X
ON
/X
OFF
software flow control.
Enables transparent X
ON
/X
OFF
software flow control.
Enables both RTS/CTS and X
ON
/X
OFF
flow control.
Enables bi-directional DTR/DSR hardware flow control.
AT&K0
AT&K1
AT&K2
AT&K3
AT&K4
AT&K5
AT&K6
AT&K7
AT&K8
Enables unidirectional DTR/DSR hardware flow control.
AT&L
n
Line Type Select
PSTN line operation. (Default)
AT&L0
AT&L1
leased line operation
AT&M
n
Asynchronous/Synchronous Mode Selection
Selects asynchronous operation. (Default)
Selects synchronous data mode with Async. off-line
command mode.
Selects synchronous data mode with Async. off-line
command mode. Same as &M1 except that &M2
enables DTR dialing of stored telephone number at
location 0.The modem will disconnect if DTR is OFF
for more than the time period in register S25.
AT&M0
AT&M1
AT&M2
AT&M3
Selects synchronous data mode. The call is manually in
itiated while DTR is inactive. The handshake is
proceeding when DTR becomes active.
AT&P
n
Select Pulse Dial Make/Break Ratio
