Modem Command Set Reference Manual
page 5 of 7
Command Function (default values in
bold type )
Implementation comments Reference
X2 As ATX1 V.25 ter
X3 As ATX1, but report BUSY V.25 ter
X4 As ATX3 V.25 ter
Z Reset to default configuration V.25 ter
&C[n] Circuit 109 (Received line
signal detector / DCD)
behaviour
V.25 ter
&C0 DCD always ON
&C1 DCD ON if carrier
detected
&D[n] Circuit 108 (Data terminal
ready / DTR) behaviour
V.25 ter
&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.25 ter
&V Display current configuration
profile
customisable
&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