Multimodemii user guide – Multi-Tech Systems MT5600BL User Manual
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MultiModemII User Guide
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Command:
&D
n Data Terminal Ready (DTR) Control
Values:
n = 0, 1, 2, or 3
Default:
2
Description:
This command interprets the high to low transition of the DTR
signal sent by the computer according to the supplied param-
eter. The action taken depends on the current &Q setting.
&D0 &Q0, &Q5, &Q6: DTR is ignored (assumed high). Allows op-
eration with computers that do not provide DTR.
&Q1
, &Q4: DTR drop causes the modem to hang up. Autoan-
swer is not affected.
&Q2
, &Q3: DTR drop causes the modem to hang up. Autoan-
swer is inhibited.
&D1 &Q0, &Q1, &Q4, &Q5, &Q6: DTR drop is interpreted by the
modem as if the asynchronous escape sequence had been en-
tered. The modem returns to asynchronous command state
without disconnecting.
&Q2
, &Q3: DTR drop causes the modem to hang up. Autoan-
swer is inhibited.
&D2 &Q0–&Q6: DTR drop causes the modem to hang up. Autoan-
swer is inhibited.
&D3 &Q0, &Q1, &Q4, &Q5, &Q6: DTR drop causes the modem to
perform a soft reset as if the Z command were received. The &Y
setting determines which profile is loaded.
&Q2
, &Q3: DTR drop causes the modem to hang up. Autoan-
swer is inhibited.
&Q5
or &Q6 and +FCLASS=1 or +FCLASS=2: Same as for &Q0.
Command:
&E
n
V.42 Error Correction Modes
Values:
n = 0, 1, or 2
Default:
1
Description:
&E0
V.42 non-error correction mode (V.42 disabled).
&E1
V.42 auto-reliable mode.
&E2
V.42 reliable mode (V.42 enabled).
Command:
&E
n
Modem-Initiated Flow Control
Values:
n = 3, 4, or 5
Default:
4
Description:
&E3
Flow control disabled.
&E4
CTS/RTS hardware flow control.
&E5
XON/XOFF software flow control.
Note:
See also the &K command.
Command:
&F
n
Load Factory Settings
Values:
n = 0 or 1
Default:
None
Description:
&F0
Load factory configuration 0.
&F1
Load factory configuration 1.
Note:
See also the Z command.