JK Audio innkeeper 4 User Manual
innkeeper 2
innkeeper 4
Multi Line Digital Hybrids
User Guide
JK Audio
Introduction
Innkeeper multi line digital hybrids will allow you to send and
receive audio over analog telephone lines. While this may
seem like a simple task that any telephone can do, the
challenge is getting the best quality audio from such a limited
audio path.
What is a Digital Hybrid?
A digital hybrid connects audio signals to a standard analog
telephone line without the variations in quality found with
analog hybrids. The main function of a hybrid is to bring in
the callers voice from the phone line, as clear and clean as
possible. In the real world, when you send your voice down
the telephone line it has a tendency to bleed over into the
caller’s audio. The hybrid must adapt to the phone line in
order to properly separate transmit and receive audio. We
use a 16 bit DSP to continuously monitor the phone line and
audio signals to deliver excellent separation. Our dualÂconvergence algorithm can achieve excellent trans-hybrid
loss, typically exceeding 50 dB, without any setup.
Ready to go?
The Innkeeper 2/4 feature diagram will help you pinpoint any
minor questions that you may have. If this is your first
exposure to a hybrid, we suggest that you read the entire
manual to allow you to take advantage of all these features.
Any Questions?
Before you pick up the phone... Please thumb through the
rest of this manual. You might find those deep technical
questions are covered on later pages.
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Features
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Features (cont)
Backlit LDC menu display, 2x20 characters.
1.
Directional Arrow Keys - Press these buttons to navigate
2.
through the menu.
Enter Button - Press this button to make a selection on
3.
the menu.
Keypad - Use these keys to dial a phone number or
4.
manually enter menu selection codes.
Call Buttons - Press these buttons to take the
5.
corresponding phone line off-hook or manually answer
an incoming call.
Drop Buttons - Press these buttons to manually drop a
6.
call or place the corresponding phone line on-hook.
OH LED - Off-Hook LED lights when the corresponding
7.
phone line is off-hook or on line with a call. Also
functions as a visual ring indicator and will flicker when
ring voltage is present on the corresponding phone line.
Transmit LED - Bi-color Transmit LED will light green
8.
when audio is being sent down the corresponding phone
line at -20 dB or greater signal level. LED will change to
red to indicate clipping at -3 dB.
Receive LED - Bi-color Receive LED indicates that caller
9.
audio is present on the corresponding phone line at -20
dB or greater signal level if green and -3 dB or greater if
red.
Monitor Handset Jacks - Used to connect an electret
10.
type handset for communication on the corresponding
phone line.
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Features (cont)
11.
12.
13.
14.
15.
16.
Phone Line Jack - RJ-11 phone line jacks for connection to
analog phone lines.
Auxiliary Phone Jack - RJ-11 phone jacks for connection to
analog telephone(s). Telephone(s) connected will only
work with corresponding phone line jack. The auxiliary
telephone should be used only for dialing and answering
calls.
Caller XLR - Balanced line level XLR outputs containing
Caller audio from the corresponding phone line.
Send XLR - Balanced line level XLR inputs used to send
audio to the corresponding phone line.
Master Send - Balanced line level XLR input may send
audio to any or all of the phone lines based upon controls
set within the menu.
Remote Jack - Proprietary 10 pin RJ 50 for connection to a
remote terminal block. The included terminal block
includes an Off-Hook signal pin and a Call/Drop control pin
for each channel.
17.
18.
AC connector - For connection to 120 - 240 VAC, 50-60 Hz
power.
Conference button - Use this feature to conference together
lines 1 and 2 when both lines are off-hook. This feature is
available on innkeeper 2 only.
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Operation
Connecting Cables
Although each application will require a slightly different setup,
following is a general cable connection setup and explanation.
Phone Line - Connect the supplied RJ-11 phone line cable(s)
between the RJ-11 jack(s) marked "Line" and your analog phone
line jack(s). Be sure these jacks can support standard analog
telephone operation. The Innkeeper 2/4 will not work with "dry
pair" phone line connections.
Send XLR - Connect a line level (mix-minus) audio signal to the
Send jack(s) on the Innkeeper 2/4. Audio will be sent down only
the corresponding phone line.
Master Send - Connect a line level (mix-minus) audio signal to
the Master Send input. Audio will be sent down either or both
phone lines based upon your selections in the menu controls.
Caller XLR - Connect the Caller output jack(s) to line level
input(s) on your audio equipment. Each caller output jack will
contain audio only from its corresponding phone line. Local
audio and audio from alternate phone lines will not be present on
these jacks.
Power - Connect the supplied power cable to a 120 - 240 VAC
power outlet.
Auxiliary Telephone(s)
You can use an auxiliary telephone to place or screen a call, and
then the call can be placed on hold. When you are ready to take
the call on Innkeeper 2/4, simply press the Call button for the
corresponding phone line. Your telephone will automatically
release the hold while you talk. If you need to take the call back
on the auxiliary telephone, simply pick up the phone before the
Innkeeper 2/4 Drop button is pressed for that line.
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