will negate the CTS signal once the
FireLine’s
internal data buffers become
full.
CD
On this line the modem indicates to the DTE that it has received a carrier
from a remote device. It will assert this signal any time there is a carrier
detected. The modem may be configured to assert this when an RF carrier is
detected (any on-channel RF, voice or data), assert it only when another RF
modem signal is detected, or always assert it. The operation of this line is
configured with the ATR1 command. The default is 1 (asserts when FireLine
data is detected on the radio receiver).
DTR
This line is an input to the FireLine. It is normally ignored because the default
configuration of the FireLine modem is to ignore this signal. If the DTR line is
enabled for use, using the
ATK5 1
command, the DTR input line can be used
to put the FireLine modem into its SLEEP mode. With DTR enabled, anytime
the DTR line is a logic 0, the FireLine will be operating normally. With DTR
enabled, anytime the DTR line is a logic 1, the FireLine will go into a SLEEP
mode, drawing much less DC power.
