6
Operation
B. Talk Battery Switch (FXO vs FXS)
A. FXS (Ring Trip) Mode
B. FXO (Loop Start) Mode
1. FXO
2. FXS
Programming
A. DIP Switch Programming
Internal View of the FXI-1
ON
1 2 3 4 5
Note: DIP Switches shown
in factory default settings.
ON OFF
Master
Volume
Control
Switch 1
Switch 2
Description
OFF
OFF
16 second default timer,
busy detect off
ON
OFF
36 second default timer,
busy detect on
OFF
ON
60 second default timer,
busy detect on
ON
ON
Default timer disabled,
busy detect on
Switch
Position
Description
3
ON
Lower VOX sensitivity
3
OFF
Normal VOX sensitivity
4
ON
Pre-page and night bell
tone on
4
OFF
Pre-page and night bell
tone off
5
ON
VOX (600 ohm page
port) mode
5
OFF
FXS (ring trip) or FXO
(loop start) mode
In this mode, the unit is powered by the ringing line and answers after 1 second, activates the relay contacts and
provides a pre-page beep if enabled (dipswitch 4 on). If more than 2.5 seconds of silence, a busy tone (default
timer >16 seconds), or a CPC are detected, or the default timer expires, the unit releases the relay and drops
the line.
In this mode, the unit waits until loop is detected, then activates the relay contacts and provides a pre-page beep
if enabled (dipswitch 4 on). If more than 2.5 seconds of silence or a busy tone (default timer > 16 seconds) is
detected, or the default timer expires, the unit releases the relay and provides a 2 second CPC.
An FXO port is an analog input RJ11 port just like a POTS trunk input on a PABX or key system. An FXO port
receives talk battery and ring voltage. In the FXO mode, the
FXI-1
provides 30V talk battery to connect to an
FXO port or plain analog phone.
An FXS port is an analog output RJ11 port just like a station port on a phone system or PABX extension. It
provides talk battery, dial tone and ring voltage. In the FXS mode, the FXI-1 is triggered by ring voltage to
seize the line, it is then powered by the talk battery being provided.
