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					         Home Wiring guide



Home Wiring Guide................................1
  Things to Consider .......................................2
  How Many Telephone can be connected....3
  Exceeding Maximum Load Limit ...............3

Planning the Job .....................................4
  Cable Requirements ......................................4
  Facts Home/Building Owner Should know.5
  What You Need to Know as Customer........7
  Hints for Do It Yourselfers ............................7
  Flush Mount Wall Jacks ................................8
  Baseboard Jacks .............................................9
  Outdoor Jacks..............................................10

Home Wiring .........................................11



This guide is intended to assist you in the
pre-wiring of your residence for telephone
service. This guide applies to wood frame,
single-family residential dwellings only. For
other dwelling or business applications,
please contact MTS.

Home Wiring guide
In June of 1993, MTS awarded the owner-
ship of inside wiring for residential and
single line business telephone service to the
customer. This means that customers have
the responsibility and cost of maintaining
their inside wiring. This includes any wire
or secondary protection devices used to
connect the telephone service to an
external building such as a garage or shop.

On construction of all new single dwelling
buildings, customers will be responsible for:
• ensuring all telephone wiring and jacks
  are CSA (Canadian Standards Association)
  approved and placement of all wire
  conforms to the Canadian Electrical Code.
• providing access from the inside of their
  premise to the area near the MTS Network
  Interface Device (NID). The NID is usually
  located near the hydro power meter.
• providing access to the main building
  electrical ground wire to the main
  telephone service connection box.

MTS is responsible for providing the service
wire to the home and for attaching the NID
to the home’s exterior (some conditions
may apply).

Things to Consider
What type of telephone or device can I

The telephone must have the following
information (normally found on base of set):
•   Canadian Standards Association (CSA)
    approval number, and
•   Industry Canada approval number, and
•   Manufacturer’s Load Number rating.

The load number relates directly to the
number of telephones you may connect to a
telephone line. See “How Many Telephones
Can I Have Connected?”

How Many Telephones Can I Have
The limit is determined according to the
load number of the telephone, usually
displayed on the base of the telephone. Add
together the total load numbers of the
telephones you want to connect on a single
telephone line. The total cannot exceed 100.
In practical terms, this will usually amount
•   five telephone sets or devices in urban
•   three telephone sets or devices in rural
    areas, where distances may affect the total
    load number capability.
Note: Telephones purchased outside of Canada may not
meet Industry Canada, CSA, and load number standards,
sometimes resulting in degraded service and unnecessary
trouble reports.

What happens if I exceed the
maximum load number?
Exceeding the maximum load number may
cause dialing, hearing, and ringing
problems. The diagram below illustrates an
excessive load and how to correct it.

      Location                   Load Number
      Bedroom 1                       10
      Bedroom 2                       25
      Living Room                     25
      Kitchen                         15
      Family Room                     25
      Utility Room                    15
      Total Load Number              115

The total load number must not exceed 100.
Remove one or more phones with a load
number equal to or greater than 15.

Planning the Job
•   Read all instructions before proceeding.
•   Follow all local electrical codes. For further
    information, contact the Provincial
    Electrical Protection Branch.
•   Lift the receiver off the hook of one of the
    working telephones to make the line busy
    when installing or rearranging a jack or
•   Connect the jack to telephone wires only.
•   Use safety eyewear.
•   Follow safe practices in the use of ladders,
    power tools, and hand tools.

Cable Requirements
Measure the lengths of cable for the job.
Where you choose to terminate the cable
affects the length you need:
You should terminate all the inside wiring at
the telephone wiring block (or protection
device, in some homes), as the following
diagram indicates:

Note: For ease of maintenance and to support additional
lines in the future, MTS recommends that you terminate
all wiring at the telephone wiring block. If you are wiring
a new home you should supply a suitable wire from the
telephone wiring block to the MTS NID on the exterior of
the home, or MTS can supply this component for a
nominal charge during the service installation.

Topology, also called “architecture,” is the
way in which telephone wiring and network
cabling is laid out. A number of different
topologies have been used, but, today, star
topology is nearly universal. In practical
terms, star topology simply means that each
telephone outlet or network workstation has
a dedicated cable running back to the
telephone wiring block or network cabling
closet. This wiring arrangement will allow
the greatest degree of flexibility for
distributing current and future
telecommunications services in a home.

“Daisy-chaining” wire from the telephone
wiring block to the first jack and then from
jack to jack is not recommended and should
be avoided.

Facts Every Home/Building Owner
Should Know
The point where MTS ownership ends is
called the Service Provider Demarcation
Point. The Service Provider Demarcation
Point means the point of interconnection of
MTS Basic Service and the customer-
provided premise wiring and equipment.
Often this point is a small grey box called a
Network Interface Device (NID), located on
the exterior of your house. In some cases, an
existing premise may not have been
upgraded to a NID, in which case, there is a
Protection Device and/or connecting block
located immediately after the first point of
entry inside your house, usually near the
electrical service panel.

As an owner or customer you are responsible
for installation, maintenance and repair of
all telephone wiring beyond the Service
Provider Demarcation Point, in the same
way as you are responsible for electrical
wiring inside your home or building. Your
telephone wiring must meet minimum
Canadian Electrical Code wiring standards
that are designed to ensure user safety as
well as provide a minimum technical
standard for the delivery of current and
many evolving telecommunications services.
MTS does not allow the connection of non-
standard telephone wiring to the MTS NID
or Connecting Block.

If you are building a new home or
renovating, be sure to pre-wire your
telephone needs before drywall has been
installed. You can contact MTS to provide
this service at competitive rates or consult
your Yellow Pages Directory for a list of
qualified building or electrical contractors,
or do the job yourself.

Grounding: Safety is MTS’s prime concern
in the installation of any telecommunication
service. In order to provide safe service, MTS
must comply with the Canadian Electrical
Code, which requires telephone service to be
adequately grounded to the home’s common
electrical ground system. It is the home-
owner’s responsibility to provide access to
this ground point, which in most cases
requires access to the home’s interior.

Entrance Conduit: MTS strongly
recommends that the homeowner or their
contractor supply a one-inch Poly Vinyl
Chloride (PVC) conduit from the home’s
interior to a point in close proximity on the
exterior of the home where the MTS NID
will be located. MTS will connect this
conduit to the NID, allowing the service
conductors plus the ground conductor to
safely enter the home. This conduit greatly
increases the security of the service being
What You Need To Know As A
As a customer, you are responsible for the
installation, maintenance and repair of all
telephone wiring beyond the Service
Provider Demarcation Point. If you require
installation or repair of telephone wiring or
jacks inside the building where you live, and
you are not the building owner, you should
discuss your requirements with your
property manager/owner and get prior
permission to make additions or alterations.

Hints For Do-It-Yourselfers
Jacks may not appear exactly as diagramed
in instructions. Wiring colours inside the
cable have changed recently. Equivalencies
between old and new wire colours and the
new connecting block are shown below.
Follow the appropriate colour codes when
installing jacks/wiring.

                                            2 Pair
Old Cable            New Cable           Connecting
red                 blue/white            Line 1 ‘R’
green               white/blue            Line 1’T’
black              orange/white           Line 2 ‘R’
yellow             white/orange           Line 2 ‘T’
Note: As you read through installation instructions, new
colours are listed with the old colours in brackets after-
wards Do not use flat telephone set line cord, lamp cord,
speaker wire, or bell wire for inside telephone wiring.

Flush Mount Wall Jacks

Desk phone                      Wall phone
   jack                            jack

1. a. Lift the receiver off the hook of a
      working phone as described in “Safety
   b. Strip beige cover 50mm (2") from end
      of cable. (Do not damage wires)

  c. Strip 20mm (3/4”) insulation off the
     blue/white (red) and white/blue (green)
     wires. Twist orange/white and
     white/orange (yellow and black) out of
     the way.
  d. Connect blue/white (red) wire to red
     wire terminal of jack. ("R" or "R1")
  e. Connect white/blue (green) wire to
     green wire terminal of jack. (“G” or

2. a. Screw jack to outlet box.
   b. Replace cover-plate.
   c. Replace receiver removed in step 1a.
3. Test (see the end of document –”Testing”)

Baseboard Jacks

1. Follow steps 1a to 1e for Flush Wall Jack
2. a. Screw jack to baseboard with two long
      wood screws. (Face jack sideways to
      avoid collecting dirt and moisture.).
   b. Snap cover-plate back on.
   c. Replace receiver removed in step 1a.
3. Test (see the end of document –”Testing”)

Home Outdoor Jack

1. a. Secure jack to bracket using 2 short, flat
   b. Follow steps 1a to 1e for Flush Wall
   c. Connect white/orange (yellow) wire to
      yellow wire terminal of jack (“Y”)
   d. Connect orange/white (black) wire to
      black wire terminal of jack (“B”)
   e. Fold slack wire out of the way to allow
      easy replacement of cover.

2. a. Secure jack and bracket to box with two
      10mm long flathead screws.
   b. Place retaining ring on jack.
   c. Place gasket on coverplate.
   d. Secure coverplate to box with 10mm
      oval head, chrome screws.
   e. Replace receiver removed in step 1b.

3. Test (see end of document – “Testing”).
Home Wiring
•   Safety eyewear
•   Needle nose pliers
•   Variety of basic screwdrivers
•   Small hammer
•   Hand or electric drill, with 5mm (approx.
    ¼”) or larger bit
•   CSA approved (minimum) four conductor
    24 gauge telephone wire (solid wire) and
    wiring devices that complies with the
    Category 3 standard (or higher) and has a
    flame travel rating of FT-4 (or higher)
•   Category 5 (or higher) wire and devices
    should be considered for present or future
    computer networking requirements and
    should be run in parallel with the
    Category 3 / FT-4 (voice ) wiring
•   Insulated staples or appropriate staple gun
    for inside wiring (3 per meter of cable)

Colour coding differs for new cable. See
“Safety First” for colour coding.
1. Plan best wire route
   a. Telephone wire must go from desired
      jack location to the Telephone Wiring
       Note: In some homes where a NID is not
       present, the Protection Unit is usually near where
       telephone cable enters building and also serves
       the function of a Telephone Wiring Block. Inside
       Protection Devices and Telephone Wiring Blocks
       are usually located near the electrical panel or
       mounted on a floor joist.
    b. Plan for jacks to be installed in
       accessible, dry locations.

  c. Jacks should never be mounted directly
     on concrete walls due to the greater
     susceptibility of corrosion during
     periods of high humidity. If the jack is
     on an outside wall, it is recommended
     it have a vapour barrier around it.
  d. In basements, jacks should be mounted
      a minimum of 12 inches above floor.
      Higher is better.
  e. Avoid routes that will encounter future
     construction, abrasions, dampness and
     power wires. Routes must be at least
     50mm (2”) from power wires, as per the
     Canadian Electrical Code.
  f. Route must follow a supported path
     (through floor joists, over ceilings,
     along/behind baseboards).
  g. Plan a separate telephone wire for each
      jack for maximum flexibility (ie. Do
      not extend from jack to jack). See Item
      2 below.
  h. Consider installing additional runs of
      Category 5 (or higher) computer cable
      at each location if you require or
      anticipate a network solution for your
      home computer(s) and “homerun”
      each network location back to the
      hub/router location.
2. Install wire and required jacks
   a. When crossing floor joist, drill through
      joist and insert wire. When drilling, be
      especially careful of any other structure
      in the immediate area that could be
      damaged (ie: other wiring, gas/water/
      sewage pipes, heating/cooling ducts,
   b. Do not pull wire tight from joist to
      joist. Allow approximately 1 to 2 cm
      sag between joists.

  c. Secure wire every 1/3 of a meter along
     surface runs with a staple and avoid
     kinks and sharp bends in the cable.

  d. If staples pierce wire, replace the wire.
  e. Leave 1/2 meter of cable at both ends.
  f. Connect jacks to cable (See jack
     installation instructions above).
3. Connect new cable to existing telephone
   a. Make telephone busy by lifting the
      receiver off of one working phone.
   b. If your home is equipped with a R66
      (66B4) or 2 pair connecting block,
      proceed, if not, go to step 3g.
   c. One wire can be connected per pin (6

d. R66 Connecting Block: Connect
   blue/white (red) wire to any spare pin
   in the first row. Connect white/blue
   (green) wire to any spare pin in the
   second row.
  – It is not necessary to strip the insulation off the
  – Use needlenose pliers to push wire into pin
  – Pin cuts insulation to make electrical
  – Ensure wire ends to not touch any other pins.
e. 2 Pair Connecting Block: Connect
   blue/white (red) wire to any spare
   terminal in row labeled Line 1 “R”.
   Connect white/blue (green) wire to any
   spare terminal in row labeled Line 1
   “"T” .

f. Network Interface Device (Protector): If
   R66 or 2 pair connecting block is not
   available, the new cable may be
   connected to the protector in the same
   manner as existing telephone cables.
   ** Strip the insulation off wires
  – It is necessary to strip the insulation off the
  – More than one wire may be attached to each
    terminal (10 wires/row).

g. Connect wires securely between brass
   washers. (see diagram above)
  h. Connect blue/white (red) wire to red
      wire terminal of protector.
  i. Connect white/blue (green) wire
     terminal of protector.
  j. Ensure all spare wires do not contact
     any other wires.

Examples of several types of Protective Devices that may be
inside a home if there is no NID on the home exterior. In
some cases where a home has been upgraded with a NID,
the existing protector device is disabled but left in place and
used as telephone wiring block for the inside wiring.

This type of protective device must be accessible and should
not be covered. If an MTS technician requires access to the
Protective Device for installation or repair purposes, the
homeowner must either provide access or give permission
for the MTS technician to gain access. An access hole
measuring 16 inches by 16 inches must be made so the
required work can be completed.

1. Place an outgoing call from each jack.
2. Receive an incoming call at each jack.
3. If all jacks are not functional, check the
   a. No dial tone at any outlet.
      – Check all wiring for a short circuit
         between blue/white (red) and
         white/blue (green wires.
   b. No dial tone, new outlet only
      – Check if existing wires from new
         outlet correctly connect to the
         existing telephone wires.
   c. Dial tone, but touch buttons do not
      – Reverse the blue/white (red) and
         white/blue (green) wires on the red
         wire and green wire terminals on the
         jack that does not work. The dial pad
         of some older tone-dial telephone
         sets will not function if the telephone
         line polarity is reversed.

Waiver of
MTS shall not be liable to the user, or any
other person, for damage or loss of any kind
or nature, injury or death resulting from the
user's or any other person’s unfamiliarity
with the Canadian Electrical Code. The
Electrical Inspection Act of the Province of
Manitoba or any other law or regulation
applicable to pre-wiring, or for reliance by
the user or any other person on the
instruction of this guide. ANY PRE-WIRING

MTS reserves the right to refuse to connect
any wiring or equipment to the MTS
network that does not comply with
generally recognized telecommunications or
electrical code standards.

1308/Rev. Jan 2005

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