Operation - JK Audio Four IFB User Manual

Operation

Dialing Calls
To dial a call, connect your analog telephone line(s) to the RJ-11 phone
line jacks on the side of the unit. With the Monitor rotary selector switch,
select the phone line you wish to dial. Press the Add button to take the
selected Monitor line off-hook. The selected Monitor line LED indicator
will light green. You may now dial the call with the DTMF keypad. All
transmit sources, as well as the input signal from the hybrid, will be
muted while DTMF tones are being transmitted into the phone line.
* If the LED lights red when the add button is pressed, this means that
there is no active phone line connected to the corresponding RJ-11 jack.
Answering Calls
You will be alerted to an incoming call with an LED visual ring indicator
for that line. When you are receiving an incoming call, the correspond-
ing line LED will flicker green. To answer this call you must first select
the corresponding line with the Monitor rotary selector switch. You may
then answer the call by pressing the Add button. The corresponding line
LED will now light constant green.
NOTE: There is no audible ringer on the Four IFB.
Dropping Calls
To drop an active call you must first select the corresponding phone line
with the Monitor rotary selector switch. Pressing the Drop button will
now disconnect the call on the selected Monitor phone line. The corre-
sponding line LED will now become unlit.
Operator Communication
You may send and receive audio through a handset connected to the
Monitor handset jack and/or through the Monitor XLR line input and out-
put. Audio from the handset and the Monitor XLR input will be sent
down the currently selected Monitor line as well as any IFB output se-
lected to the same line. Audio from the Monitor phone line will be sent
into the Monitor handset and the Monitor XLR output.
Example:
Phone line 1 is selected as Monitor via the Monitor rotary selector
switch.
IFB 1 and IFB 2 rotary selector switches are set to line 1.
IFB 3 and IFB 4 rotary selector switches are set to line 2.
Audio from the telephone handset microphone and from the Monitor
XLR input will be sent down phone line 1 and out of the Monitor XLR
output, handset speaker, IFB 1 XLR output and IFB 2 XLR output.
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