JK Audio Innkeeper PBX User manual

JK Audio
User Guide
innkeeper PBX™
VoIP/ PBX Desktop Digital Hybrid

ii innkeeper PBX™ VoIP/PBX Desktop Digital Hybird
Welcome
Thank You
Thank you for purchasing a JK Audio innkeeper PBX Digital Hybrid. Please read
this guide for instructions on setting up and using your new product.
Getting Assistance
If you have technical or application questions,
call us M-F: 8:30am-5:00pm (CT)
In the US & Canada (Toll-Free)
800-552-8346 All other countries: 815-786-2929
Email us at:
[email protected]
Or check out our FAQ section for answers to common questions.
Limited Warranty
The innkeeper PBX is covered by a 2 year warranty to be free from defective
workmanship and materials. To obtain service, contact JK Audio by phone or
email for return authorization. Once authorized, you will carefully pack and ship
the faulty product and all accessories to us. You will pay for shipping to us and
we will pay for return back to you.
This warranty does not cover damages due to accident, weather, re, ood,
earthquake, misuse, unauthorized repairs or modications, or damages occurred
in shipping, only defective workmanship or materials.
There are no expressed or implied warranties which extend beyond the
warranty here made.

Contents
Contents
Overview 1
Getting to know your innkeeper PBX
2 Controls & Indicators
4Inputs & Outputs 2
Getting Connected 6
Conguration 8
Operation 9
FAQs 10
Technical Information 12
iii
Contents

iv innkeeper PBX™ VoIP/PBX Desktop Digital Hybird
16 bit DSP Technology
Proprietary Auto Null Algorithm
(50 dB null)
Send XLR Line Input
Mic/Line Switch
3.5mm Mono Line Input
Caller XLR Line Output
3.5mm Stereo Line Output
3.5mm Headphone Jack
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Handset Selector Switch
(Electret, Carbon, Dynamic)
Universal Power supply with
detachable cord RJ22 Handset Jumper Cable
Features
In the Box
Features

1
Overview
Introducing the innkeeper PBX™
Innkeeper PBX easily converts your multi-line PBX type telephone system into
a professional, a󰀨ordable talk show console. Simply connect between your tele-
phone handset and the phone base.
What is a Digital Hybrid?
The innkeeper PBX digital hybrid connects audio signals to and from the handset
side of a telephone without the variations in quality found with analog hybrids.
The main function of a hybrid is to bring in the caller’s 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 (Digital Signal Processor) to continuously
monitor the phone line and local audio signals to deliver excellent trans-hybrid
loss, also known as separation. Our dual-convergence algorithm can achieve
excellent separation, typically exceeding 50 dB.
Ready to go?
The innkeeper PBX controls and connectors are clearly marked and ready for
operation. The Features diagrams and Operation sections on the following pages
will help you pinpoint any minor questions that you may have. If this is your rst
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 nd those deep technical questions are covered on later pages.
Overview

2innkeeper PBX™ VoIP/PBX Desktop Digital Hybird
Getting to Know Your innkeeper PBX
3 4 5 6 71
8 9
2
10 11
1. Handset Button
Press this button to use the handset as if you were on a normal
telephone call.
2. Broadcast Button
Press this button to disable the handset and activate the innkeeper PBX for
use as a digital hybrid.
3. Send 1 Level
Adjusts the signal level that you are sending down the telephone line,
through the female XLR input.
4. Send 2 Level
Adjusts the signal level that you are sending down the telephone line,
through the 3.5mm <Mono In> mini jack.
5. Caller Level
Adjusts the level of the incoming caller’s audio as it is going out the
output jacks.
6. HeadphoneLevel
Adjusts the signal level coming from the 3.5mm front panel headphone jack.
7. Headphone
The 3.5mm stereo headphone jack contains a mix of both the Send input
audio and the Caller audio.
Controls & Indicators

Controls & Indicators 3
Getting to Know Your innkeeper PBX
Indicators Cont’d
8. OH LED
Lit when you are on line with a call (O󰀨-Hook).
9. Send LEDs
Displays the signal level going to the phone line. The goal is to drive the
phone line audio at levels high enough to avoid phone line noise, but not
so loud as to cause excessive clipping. Adjust the <Send> level control
so that you rarely see ashes of the red -3dB peak <Send> LED. These
ashes should occur only during loud speech bursts. If the red LED
stays lit for extended periods you can assume that much of your speech
is being clipped or distorted. In this case you should lower the <Send>
volume control for the input that is causing the clipping.
10. Power LED
Lit when unit is plugged in and receiving power.
11. Caller LEDs
Displays the signal level coming in from the phone line, after the DSP.
This signal level will not change when you adjust the <Caller> knob.
The <Caller> level control knob does not change what you see on these
LEDs. Adjust the <Caller> level control to give you the best signal level at
the <Caller> XLR output or the Caller channel of the <Stereo Out>
mini jack.

innkeeper PBX™ VoIP/PBX Desktop Digital Hybird
4
Getting to Know Your innkeeper PBX
Inputs & Outputs
1. Handset Jack
Connect your telephone handset to this jack.
2. Phone Jack
Connect this jack to the handset jack on your telephone using the supplied
handset jumper cable.
3. Handset Type Selector Switch
Use this switch to select the correct type of handset microphone that your
telephone uses.
A=Electret, B=Carbon, C=Dynamic
4. Caller Output
Male balanced XLR output contains only the caller’s voice.
5. Send 1 Input
Female balanced XLR input for signals going out to the phone line. Mic or
line level input.
6. Mic/Line switch
Sets the front end sensitivity of the Send 1 XLR jack. Set to <Mic> if you
intend to connect a dynamic microphone directly to the Send 1 jack. Set to
<Line> if you are connecting to the output of a mic mixer.
3 4 5 6 97 81 2

Inputs & Outputs
Inputs & Outputs Cont’d
7. Send 2 Mono Input
3.5mm <Mono In> mini jack input for signals going into the phone line.
Line level.
8. Stereo Output
3.5 mm <Stereo Out> mini jack contains both Send and Caller audio
channels with levels determined by the <Send 1> and <Send 2> level
controls and the <Caller> level control. Left channel contains your
local Send audio and right channel contains the Caller’s audio from the
telephone line.
9. Power Jack
For connection only to the supplied 9VDC regulated power supply.
5
Getting to Know Your innkeeper PBX

innkeeper PBX™ VoIP/PBX Desktop Digital Hybird
6
Note: There are 2 ways to set up the audio equipment for innkeeper PBX.
Connecting to a Multi-Line Phone
1. Connect the supplied RJ22 handset jumper cable between the jack marked
<Phone> on the back of the innkeeper PBX and to handset jack on the base
of your telephone.
2. Connect your telephone handset to the RJ-22 jack on the back of the
innkeeper PBX marked <Handset>.
If you are only using one mic, please continue to Step 3.
If you are using a mixer with two or more mics, please skip to Step 6.
Setting up for One Mic/Headphone (No Mixer)
3. Connect a dynamic microphone cable to the <Send 1> jack on the hybrid.
Be sure to set the Innkeeper PBX <Mic/Line> switch to the <Mic> position.
4. Connect a headphone to the front of the innkeeper PBX.
5. Connect a stereo cable from the mini-jack <Stereo Out> on the Innkeeper
PBX to the <Line In> on your computer sound card or other recording
equipment that has a stereo input. Continue to Step 12.
Setting up for two or more Mics and a Mixer (Mix Minus Caller)
Note: A mix-minus signal is an audio signal that contains a mix of your local microphones plus
any other audio, minus the Caller’s own voice. Sending the Caller’s audio back to the innkeeper
PBX will cause an echo, or feedback.
6. Connect the innkeeper PBX <Caller> output to any Line input on the mixer.
7. Connect microphone(s) to the mic inputs on your mixer.
8. Connect the mixer’s Mix-Minus bus or Aux Send output (this may be labeled
FX or Mon but any Aux bus will work) to the <Send 1> input on Innkeeper
PBX. Set the Innkeeper PBX <Mic/Line> switch to the Line position.
Getting Connected
Recording
Device
Set to <Mic>
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