Black Box MD1650A-JP, Reference Manual

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CHAPTER 2: AT Commands
9
Description (continued): &D1 &Q0, &Q1, &Q5, &Q6: DTR drop is interpreted by the modem
as if the asynchronous escape sequence had been entered. The
modem returns to asynchronous command state without
disconnecting.
&Q2, &Q3: DTR drop causes the modem to hang up.
Autoanswer is inhibited.
&D2 &Q0–&Q6: DTR drop causes the modem to hang up.
Autoanswer is inhibited.
&D3 &Q0, &Q1, &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.
Autoanswer is inhibited.
&Q5 or &Q6 and +FLCLASS=1 or +FCLASS=2: Same as for
&Q0.
NOTE
If &D1, &D2, or &D3 is set, the modem will not dial without a DTR drop.
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 X-ON/X-OFF software flow control.
NOTE
See also the L5 and &K commands.
Command: &E n V.42bis Data Compression
Values:
n
= 14 or 15
Default: 15
Description: &E14 V.42bis data compression disabled.
&E15 V.42bis data compression enabled.
NOTE
This command controls only V.42bis data compression, whereas the %C command
controls both V.42bis and MNP
® 5 data compression. The command in effect is the one
last entered. See also the L5 command.