Lenovo M55e User Manual - Page 85

Extended, commands

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Extended AT commands Command &C_ &D_ &F_ &G_ &K_ &M_ &P_ &R_ &S_ &T_ &V &C0 &C1 &D0 &D1 &D2 &D3 &F &G0 &G1 &G2 &K0 &K3 &K4 &K5 &K6 &M0 &P0 &P1 &P2 &P3 &R0 &R1 &S0 &S1 &T0 &T1 &T3 &T4 &T5 &T6 &T7 &T8 &V0 Function Force Carrier Detect Signal High (ON) Turn on CD when remote carrier is present Modem ignores the DTR signal Modem returns to Command Mode after DTR toggle Modem hangs up, returns to the Command Mode after DTR toggle Resets modem after DTR toggle Recall factory default configuration Guard tone disabled Guard tone disabled 1800 Hz guard tone Disable flow control Enable RTS/CTS hardware flow control Enable XON/XOFF software flow control Enable transparent XON/XOFF flow control Enable both RTS/CTS and XON/XOFF flow control Asynchronous operation US setting for off-hook-to-on-hook ratio UK and Hong Kong off-hook-to-on-hook ratio Same as &P0 setting but at 20 pulses per minute Same as &P1 setting but at 20 pulses per minute Reserved CTS operates per flow control requirements Force DSR Signal High (ON) DSR off in command mode, on in on-line mode Ends test in progress Perform Local Analog Loopback Test Perform Local Digital Loopback Test Grant Remote Digital Loopback Test request by remote modem Deny Remote Digital Loopback Test request Perform a Remote Digital Loopback Test Perform a Remote Digital Loopback Test and Self-Test Perform Local Analog Loopback Test and Self-Test Displays Active and Stored Profiles Appendix A. Manual modem commands 67

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Extended
AT
commands
Command
Function
&C_
&C0
Force
Carrier
Detect
Signal
High
(ON)
&C1
Turn
on
CD
when
remote
carrier
is
present
&D_
&D0
Modem
ignores
the
DTR
signal
&D1
Modem
returns
to
Command
Mode
after
DTR
toggle
&D2
Modem
hangs
up,
returns
to
the
Command
Mode
after
DTR
toggle
&D3
Resets
modem
after
DTR
toggle
&F_
&F
Recall
factory
default
configuration
&G_
&G0
Guard
tone
disabled
&G1
Guard
tone
disabled
&G2
1800
Hz
guard
tone
&K_
&K0
Disable
flow
control
&K3
Enable
RTS/CTS
hardware
flow
control
&K4
Enable
XON/XOFF
software
flow
control
&K5
Enable
transparent
XON/XOFF
flow
control
&K6
Enable
both
RTS/CTS
and
XON/XOFF
flow
control
&M_
&M0
Asynchronous
operation
&P_
&P0
US
setting
for
off-hook-to-on-hook
ratio
&P1
UK
and
Hong
Kong
off-hook-to-on-hook
ratio
&P2
Same
as
&P0
setting
but
at
20
pulses
per
minute
&P3
Same
as
&P1
setting
but
at
20
pulses
per
minute
&R_
&R0
Reserved
&R1
CTS
operates
per
flow
control
requirements
&S_
&S0
Force
DSR
Signal
High
(ON)
&S1
DSR
off
in
command
mode,
on
in
on-line
mode
&T_
&T0
Ends
test
in
progress
&T1
Perform
Local
Analog
Loopback
Test
&T3
Perform
Local
Digital
Loopback
Test
&T4
Grant
Remote
Digital
Loopback
Test
request
by
remote
modem
&T5
Deny
Remote
Digital
Loopback
Test
request
&T6
Perform
a
Remote
Digital
Loopback
Test
&T7
Perform
a
Remote
Digital
Loopback
Test
and
Self-Test
&T8
Perform
Local
Analog
Loopback
Test
and
Self-Test
&V
&V0
Displays
Active
and
Stored
Profiles
Appendix
A.
Manual
modem
commands
67