Connecting to the Phone Company
The phone company's responsibility usually ends at a demarcation point ("demark" or "Standard Network
Interface" or "Network Interface Device") located on an exterior wall, or inside near your phone equipment.

Some demarks have built-in protection against high voltage surges. Some don't. Even if your demark is
protected, we recommend adding additional surge protection on the phone lines, and on the AC power.

There are many different types of demarks. Here are some of the most common ones:
This interface housing may be installed
indoors or out, and can handle up to six
lines with the installation of line circuit
modules.

There are different versions available,
and you may have a choice of plugging
in or using screw terminals to connect
your wires to the phone company's
circuits.

There are usually two internal
compartments. One is reserved for
phone company technicians, and
requires a special "
can wrench" to open.
The RJ21X network interface is
installed indoors, usually near
your phone equipment, and can
carry up to 25 phone lines.
It's based on a 66M punchdown
block, with an attached female
25-pair Amphenol-type
connector, and usually has a
protective cover.

You can connect to it by plugging
a 25-pair cable or a hydra
adapter into the connector, or
punching down your wires with a
punchdown tool.
This demark,
sometimes called an
"NW1," is always
installed indoors, and
can handle one or two
lines.

It's a modification of a  
standard phone jack,
with a rotating
protective cover and a
silver label that explains
how to make a test.

There is no surge
protection, but there
may be an internal
circuit that allows the
phone company to
make tests from the
Central Office.
You may also get dialtone from a VoIP service provider, or your cable TV company. Regardless of the
source, you make a simple plug-in connection.
Getting dial tone into your phone system
The KX-TAW848 control unit connects to the phone company's circuits through its internal
one-line modular jacks. The jacks are labeled "CO," which stands for "Central Office." For
more telecom terminology,
CLICK.

You will need nearby one-line ("RJ-11C") jacks, which can be installed by the phone company
or anyone else.

It's also possible for the phone company to provide NW1 demarks near your equipment, that
you can plug into.

You'll need several modular line cords (one-pair or two-pair cords are fine) to go from the
external jacks to the surge protector, and to go from the surge protector to the jacks inside the
control unit.

The KX-TAW848 is initially configured to handle four phone lines, and can be expanded to
handle eight lines
Connecting your phones
Your phones will connect to modular jacks (labeled "EXTN." for "extension") inside the
KX-TAW848 cabinet, either directly, or via a punchdown block, patch panel or other hardware.

AbleComm's "
ModBlock" is a 66-type punchdown block, equipped with 8 cords, that can plug
into the phone jacks inside the 848. The ModBlock can also be used for connecting the phone
company lines, and door intercom circuits.

If your system has been expanded, you can use several ModBlocks for more than 8 phones, or
use our
Custom Block (labeled "624 Block" above) for up to 24 phones. Like the ModBlock, the
Custom Block can also be used for connecting the phone company lines, and door intercom
circuits.

Plug the cords form the ModBlock or Custom Block into the 848, and use a "
punchdown tool" to
attach the wires from the phone jacks to the block. It will take you about five minutes to learn how
to use a punchdown tool.
You can use patch panels instead of (or in addition to) punchdown blocks.

They're more expensive than punchdown blocks, but they make it easy to make and change
connections, and to diagnose and solve problems.
  • Panels are also good if you want to have more jacks installed than you can have "live" at one
    time.

  • A patch panel is particularly convenient when someone changes offices (or a kid changes
    bedrooms). Just move the phone and the patch cord, and he or she will have the same intercom
    number, voicemail box and features in the new location.

  • It's also good if you want to have more jacks installed than you can have "live" at one time.

CLICK to see the patch panels, racks, brackets and accessories at our PhoneGeeks.com site.
AbleComm's exclusive PanaPatch 6 has 24 modular
cords that can plug right into the jacks in your
KX-TAW848
If you want a quick installation
without specialized tools or
hardware, you can simply use
long telephone cords.

This is good for temporary
installations at fundraisers and
political campaigns.

The professionals may sneer
at you, but it will work.

  • Try not to trip over
    the wires!
If you don't mind running wire,
but don't want to get involved
with punchdown tools, blocks,
or patch panels, you can
simply attach wire to your
phone jacks, crimp a plug on
the other end, and plug into
the KX-TAW848.
Multi-line proprietary phones, such as the
KX-T7736 and KX-TD7896, need 2-pair
wiring and jacks.

Single-line phones and accessories, such
as credit card terminals and fax machines,
use 1-pair wiring and jacks.

The wireless phone antenna modules use
one pair wiring, but they use pins 2 and 5
in their phone jacks instead of the more
common pins 3 and 4.

(Diagram is from Leviton.)
Connecting your Voice Processor
When connected to a Panasonic KX-TAW848 phone system, one phone cord is capable of carrying two
simultaneous conversations between the voice processor and phone system.

This "DPITS" technology makes efficient use of your phone system's resources: one phone system port can
handle two voice processor ports. Make sure you make connections with a phone cord that has a DATA PAIR
-- the yellow and black wires in a normal cord and phone jack. A cord with just two wires in the center positions
will NOT work.

Two-Port voice processors, such as the KX-TVS50 and 90, use one phone cord plugged into your
KX-TAW848 to support two ports, for two simultaneous conversations.

Bigger voice processors, such as the KX-TVS125, use one cord for each two ports. If you have four ports,
you'll need two cords plugged into the KX-TAW848.

The KX-TAW848 can support up to four voice processor ports with digital integration, and more ports with
DTMF integration.
Connecting your Wireless Phones
The KX-T0141 antenna modules ("mini cells) used with KX-TD7680 and 7690 wireless phones connect to
KX-TAW84870 (4 ports) or KX-TAW84875  (4 ports) or KX-TAW84876 (8 ports) or the 4-port module
permanently installed inside your KX-TAW848 control unit.

Up to 28 handsets can be registered for use with the KX-TAW848; but only two can be in use with each
antenna at one time.

  • Maximum distance from the phone system control unit to an antenna module is 1138 feet with 24
    gage wire, and 1640 feet with 22 gage.
  • You should be able to use a handset up to 500-600 feet from an antenna module. Range depends
    on environmental conditions
Connecting your system
TAWsystems.info
Connecting your system
TAWsystems.info