Land-Cellular Corp. CDM819i, Руководство пользователя

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This parameter determines how the modem responds when the Data Terminal Ready
circuit changes state. The &D5 and &D6 settings allow customer specific applications to
be controlled via the DTR line.
Default: &D0
Storage: &W
Command Values:
AT&D0 Ignore DTR.
AT&D1 If in online data state, upon an on-to-off transition of
DTR, the modem enters online command state and
issues an OK result code; the call remains connected.
Otherwise, ignore DTR.
AT&D2 If in Online Data State or Online Command State upon
an
on-to-off transition of DTR, the modem performs an
orderly clear-down of the call and returns to command
state. Automatic answer is disabled while DTR remains
off.
AT&D4 The modem auto-dials default remote station (as
determined by AT+LCPRFL) upon an
off-to-on
transition of DTR and enters online data state. The
modem ends call and enters command state upon an
on to-off transition of DTR.
AT&D5 The modem auto-dials default remote station (as
determined by AT+LCPRFL) upon an
on-to-off
transition of DTR and enters online data state. The
modem ends the call and enters command state upon an
off-to-on transition of DTR.
AT&D6 Upon an on-to-off transition of DTR, the modem
performs an orderly clear-down of any session and turns
OFF the RF module. Upon an
off-to-on transition of
DTR, the modem turns ON the RF module and re-
establishes the radio session as determined by the
AT+LCGASC setting.
AT&D7 Upon an on-to-off transition of DTR, the modem
performs an orderly clear-down of any session and turns
OFF the RF module. Upon an
off-to-on transition of
DTR, the modem turns ON the RF module and re-
establishes the radio session.
AT&D8 Upon an on-to-off transition of DTR, the modem
performs an orderly clear-down of any session and turns
OFF the RF module. Upon an
off-to-on transition of
DTR, the modem turns ON the RF module and re-
establishes the radio session and auto-dials the default