001-0003-832 Rev3
Page 42 of 59
DSR:
Sets the Data Set Ready to Always On, On When Available, On When Connected or Always Off. The
DSR parameter determines how the modem controls the state of the Data Set Ready circuit.
Always On:
DSR is always on.
On When Available:
DSR is on when the RF signal present and phone registered on network.
On When Connected:
DSR is on when connected to CDMA.
Always Off:
DSR is always off.
The default value is
Always Off.
CD:
The CD parameter determines how the modem controls the state of Carrier Detect and the amber
CD LED on the front panel.
Always On:
CD is always on.
Connect On:
CD is on when connected to a remote host.
Always Off:
CD is always off.
The default value is
Connect On.
RI:
The RI parameter determines how the modem controls the state of the Ring Indicator circuit.
Always On:
RI is always on.
Connect On:
RI tracks incoming ring pulse.
Always Off:
RI is always off.
The default value is
Always Off.
Pin
Name
Direction
Description
1
CD
«—
Carrier Detect
2 RX
«—
Receive
Data
3 TX
—»
Transmit
Data
4
DTR
—»
Data Terminal Ready
5 GND
System
Ground
6
DSR
«—
Data Set Ready
7
RTS
—»
Request to Send
8
CTS
«—
Clear to Send
9 RI
«—
Ring
Indicator
