XM1240S AT Command Reference Manual
No. XM1240S-A00-106
xmodus swiss GmbH
27 / 46
4.4.17 S47 - DTR Options
S47 defines the interpreting of the ON to OFF transition of the DTR signal in accordance
with the parameter supplied. See AT&Dn Command for configuration.
Range:
0 – 4 (Bit Mapped)
Default: 2
S47=0
DTR drop is ignored (assumed ON). Allows operation with DTE’s which
do not provide DTR.
S47=2
DTE control line DTR is not ignored: dropping the DTR line by the DTE
will disconnect an existing ISDN connection (default).
An incoming call will accepted only with DTR active.
S47=4
DTE control line DTR is not ignored: dropping the DTR line by the DTE will
disconnect an existing ISDN connection.
An incoming call will accepted with DTR off.
4.4.18 S48 - DCD Options
S48 controls the DCD signal output (circuit 109) in accordance with the parameter
supplied. See AT&Cn Command for configuration.
Range:
0,1 (Bit Mapped)
Default: 1
S48=0
DCD signal remains ON at all times.
S48=1
DCD signal follows the state of the link.
S48=2
DCD signal is always off.
4.4.19 S49 - RI Options
S49 controls the RI signal output (circuit 125) in accordance with the parameter
supplied.
Range:
0 – 4 (Bit Mapped)
Default: 0
S49=0
RI functions as ring indicator (indicates incoming calls).
S49=1
RI follows the state of the DCD signal.
S49=2
RI remains ON at all times.
S49=4
RI remains OFF at all times.
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