32
ATX4 Enables monitoring of busy tones; send all messages. The value
111b is written to S22 bits 6,5,and 4,respectively.(Default)
ATYn Long Space Disconnect
This command enables/disables the generation and response to long
space disconnect. The parameter value, if valid, is written to S21 bit 7.
ATY0 Disables long space disconnect.(default)
ATY1 Enables long space disconnect. In non-error correction mode,
the modem will send a long space of four seconds prior to
going on-hock. In error correction mode, the modem will
respond to the receipt of a long space (i.e., a break signal
greater than 1.6 seconds)by going on-hook.
ATZn Soft Reset and Restore Profile
The modem performs a soft reset and restores(recalls)the configuration
profile according to the parameter supplied. If no parameter is
specified, zero is assumed.
ATZ0 Soft reset and restore stored profile 0.
ATZ1 Soft reset and restore stored profile 1.
AT&Cn RLSD(DCD) Option
The modem controls the RLSO output in accordance with the parameter
supplied. The parameter value, if valid, is written to S21 bit 5.
AT&C0 RLSD remains ON at all times.(Default.)
AT&C1 RLSD follows the state of the carrier.
AT&Dn DTR Option
This command 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.
AT&D0 DTR drop is interpreted according to the current &Qn setting
as follows: (Default)
&Q0,&Q5,&Q6 DTR is ignored(assumed ON).Allows operation with
DTEs, which do not provide DTR.
&Q1,&Q4 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.
AT&D1 DTR drop is interpreted according to the current &Qn setting
as follows:
&Q0,&Q1,&Q4, DTR drop is interpreted by the modem as
&Q5,&Q6 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.
Auto-answer is inhibited.
AT&D2 DTR drop is interpreted according to the current &Qn setting
as follows:
&Q0,&Q1,&Q4, DTR drop causes the modem to perform a
&Q5,&Q6 soft reset as if the Z command were received.
The &Y setting determines which profile is loaded.