Multitech SocketModem MT5600SMI-32 Developer's Manual page 38

Command: &C
Description:
Default:
Defined Values:
Result Codes:
Command: &D
Description:
Default:
Defined Values:
Command: &K
Description:
Default:
Defined Values:
Result Codes:
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer's Guide
Chapter 5 – AT Commands, S-Registers, and Result Codes
RLSD (DCD) Option
The modem controls the RLSD output in accordance with the parameter
supplied. The parameter value, if valid, is written to S21 bit 5.
1
0 RLSD remains ON at all times.
1 RLSD follows the state of the carrier.
OK
Otherwise ERROR
DTR Option
Interprets the ON to OFF transition of the DTR signal from the DTE in
accordance with the parameter supplied. The parameter value, if valid, is
written to S21 bits 3 and 4. Also, see S25.
2
&D0 DTR drop is interpreted according to the current &Q setting as
follows:
&Q0, &Q5, &Q6: DTR is ignored (assumed ON). Allows operation
with DTEs, which do not provide DTR.
Q1 DTR drop causes the modem to hang up. Auto-answer is not
affected.
&Q2, &Q3 DTR drop causes the modem to hang up. Auto-answer is
inhibited.
&D1 DTR drop is interpreted according to the current &Q setting as
follows:
&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 causes the modem to hang up Auto-answer is
inhibited.
&D2 DTR drop is interpreted according to the current &Q setting as
follows:
&Q0 through &Q6 drop caused the modem to hang up. Auto-answer
is inhibited.
&D3 DTR drop is interpreted according to the current &Q setting as
follows:
&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. Auto-answer is
inhibited.
If &Q5, &Q6, +FCLASS=1 or +FCLASS=2 is in effect, the action
taken is the same as for &Q0.
Flow Control
Defines the DTE/DCE (terminal/modem) flow control mechanism. The
parameter value, if valid, is written to S39 bits 0, 1, and 2.
3 (for data modem modes)
0 Disables flow control.
3 Enables RTS/CTS flow control.
4 Enables XON/XOFF flow control.
5 Enables transparent XON/XOFF flow control.
Note: Upon reset, both RTS/CTS and XON/XOFF flow control is enabled
for fax modem and voice modes.
OK
Otherwise ERROR
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