JK Audio PBXport - Manual (Page 2)

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Introduction
PBXport will allow you to send and receive audio through your multi-
line PBX, ISDN or analog telephone. While this may seem like a sim-
ple task, the challenge is getting the best quality audio from such a
limited audio path.
What is a Digital Hybrid?
The PBXport 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 audio signals from the telephone in order to properly
separate transmit and receive audio. We use a 16 bit DSP (Digital
Signal Processor) to continuously monitor the audio signals from the
telephone to deliver excellent separation. Our dual-convergence
algorithm can achieve excellent trans-hybrid loss, also known as
"separation".
Ready to go?
The PBXport controls and connectors are clearly marked and ready
for operation. The 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 ad-
vantage 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.
Safety Symbols used in this manual:
ATTENTION! - Alerts you to instructions for preventing a
situation that could result in damage to the unit.
WARNING! - Alerts you to instructions for preventing a poten-
tially hazardous situation that could result in bodily injury.
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FCC Registration (continued)
This can be found on the bottom of your telephone
equipment, and,
c) the ringer equivalence number (REN) for this
equipment. The REN is used to determine the quantity of
devices which will be connected to the telephone line.
Excessive RENs on the telephone line may result in the
devices not ringing in response to an incoming call. In
most, but not all areas, the sum of the RENs should not
exceed 5.0. To be certain of the number of devices that
may be connected to the line, as determined by the total
RENs, contact the local telephone company.
3. Repair Instructions
If it is determined that your telephone equipment is
malfunctioning, the FCC requires that it not be used and
that it be unplugged from the modular outlet until the
problem has been corrected. Repairs to this telephone
equipment can only be made by the manufacturer or its
authorized agents or by others who may be authorized by
the FCC. For repair procedures, follow the instructions
outlined under the warranty section of the manual.
4. Rights of the telephone company
If telephone equipment is causing harm to the network,
the telephone company may temporarily discontinue your
telephone service. If possible, they'll notify you before
they interrupt service. If advanced notice isn't practical,
you'll be notified as soon as possible. You'll be given the
opportunity to correct the problem, and you'll be informed
of your right to file a complaint with the FCC.
Your telephone company may make changes in its
facilities, equipment, operations or procedures that could
affect the proper functioning of your JK Audio product. If
such changes are planned, you'll be notified by your
telephone company.