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Command
Function (default values in
bold type )
X2
As ATX1
X3
As ATX1, but report BUSY
X4
As ATX3
Z
Reset to default configuration
&C[n]
Circuit 109 (Received line
signal detector / DCD)
behaviour
&C0
DCD always ON
&C1
DCD ON if carrier
detected
&D[n]
Circuit 108 (Data terminal
ready / DTR) behaviour
&D0
DTR ignored
&D1
On DTR ON to OFF: go to
online command mode,
don't disconnect
&D2
On DTR ON to OFF:
disconnect go to
command mode.
Automatic answer is
disabled while DTR OFF.
&F
Load factory defaults
&V
Display current configuration
profile
&Wn
No action
&Yn
No action
&Zn=x
No action
\A
No action
\A1
No action
\A2
No action
\A3
No action
\C
No action
\C1
No action
\G
No action
\G1
No action
\N
No action
\N2
No action
\N3
No action
\N4
No action
\N5
No action
Modem Command Set Reference Manual
Implementation comments
customisable
Reference
V.25 ter
V.25 ter
V.25 ter
V.25 ter
V.25 ter
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page 5 of 7
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