TELEPHONE CABLING TECHNOLOGYmedia.withtank.com/b2780c5760/telephone-cabling-basics.pdf · TELEPHONE...
Transcript of TELEPHONE CABLING TECHNOLOGYmedia.withtank.com/b2780c5760/telephone-cabling-basics.pdf · TELEPHONE...
TELEPHONE CABLING TECHNOLOGY
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Voice Grade Telephone Cable
Main Types – Outdoor
Heavy Duty Type , Weatherproof, Sun Protected, Mechanical protection from damage. Some types can be buried in the ground. Cable jacket normally black.
Main Types – Indoor
Light Duty Type, Used Indoor only, not weatherproof, can be run in conduits, cable trays etc., can be fixed surface. Cable jacket White or Beige.
CABLE CONSTRUCTION
Basic Cable is One Set of 2 Wires Called A “ Twisted Pair “
2 wire pair
PVC jacket INFINITY CABLING
CABLE CONSTRUCTION
Telephone Cable is Manufactured in standard sizes ie
1 pair, 2 pair, 3 pair, 4 pair ,6 pair, 10 pair, 15 pair, 20 pair ,30 pair, 50 pair, 100 pair
A Standard colour code is used to identify each pair. The colour code is repeated through each size of cable. ie
BLUE ORANGE GREEN BROWN SLATE (grey)
Matched with a “ Trace Colour” ie WHITE
BLUE / WHITE ORANGE / WHITE GREEN / WHITE BROWN / WHITE SLATE / WHITE
“First 5 pairs “
BLUE / RED ORANGE / RED GREEN / RED BROWN / RED SLATE / RED “Second 5 pairs”
RED
This is a 10 Pair C
able
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Standard telephone installations normally require ONE PAIR for each telephone, so a cable is selected to suit the job ex. 22 phones use 30 pair with some spare pairs for additional telephones which may be added. PLEASE NOTE some telephone systems use TWO pairs for each phone ie voice & data
TELEPHONE
1 2
RJ11 OUTLET
TELEPHONE OUTLET TERMINATION
1 2 3 4 5 6 7 8
RJ45 OUTLET
Voice Pair
Data (if required )
Data (if required )
1 2 3 4
Voice Pair
Data (if required )
Data (if required )
Voice Pair
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Disconnect Module Switched connection through module pins, allows testing without cable removal
Hi-band Module For Ethernet network cabling ie. jointing, patching etc.
Connect Module Solid connection through module pins
Krone (pronounced “krona”) Module Types
Infinity Cabling
20 Position Block ( 10 Pairs )
KRONE TELEPHONE CABLING BLOCKS
Connect Module 20 Point to Point Connection (Limited test options )
Disconnect Module 20 Position Block ( 10 Pairs )
Point to Point Connection (Full test options )
pabx
Building Wiring
pabx
Building Wiring
Normal Connection
4 Pin Test Plug Inserted
Test equipment
All wiring available for testing without removing cable from krone block
Building Wiring Building Wiring INFINITY CABLING
KRONE (Pronounced “Krona” ) Disconnect Module
Termination Block for 10 Pairs Telephone Cable
BLU
E W
HITE
WH
ITE
WH
ITE
WH
ITE
WH
ITE
GR
EE
N
BR
OW
N
SLA
TE
OR
AN
GE
RE
D
RE
D
RE
D
RE
D
RE
D
SLA
TE
BR
OW
N
GR
EE
N
OR
AN
GE
BLU
E
1ST 5 Pairs 2nd 5 Pairs
10 pairs
10 blocks = 100 pairs
20 pairs
30 pairs
40 pairs
50 pairs
60 pairs
70 pairs
80 pairs
90 pairs
100 pairs
1
2
3
4
5
6
7
8
9
10 Typical 400 Pair MDF
(Main Distribution Frame )
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PRIMARY COLOURS x 5 BLUE ORANGE GREEN BROWN SLATE (Grey)
Telephone Cable Colour Code
TRACE COLOURS X10 WHITE RED BLACK YELLOW WHITE / BLUE STRIPE RED / BLUE STRIPE BLACK / BLUE STRIPE YELLOW / BLUE STRIPE WHITE / ORANGE STRIPE ORANGE / RED STRIPE
10 X 5 = 50 PAIRS
EXAMPLE FIRST 10 PAIRS
PRIMARY -- TRACE BLUE
ORANGE GREEN BROWN SLATE
WHITE WHITE WHITE
WHITE WHITE
BLUE ORANGE GREEN BROWN SLATE
RED RED RED
RED RED
1 2 3 4 5
6 7 8 9 10
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Phones, FAX, adsl etc.
Telephone Exchange (SA TELKOM)
Underground Cable
Building Ground Floor
“Local DP G”
First Floor
Second Floor
Third Floor
“Local DP 2”
“Local DP 1”
“Local DP 3 “
PBX System
PBX Services Exts,Night bells etc
User Devices (Office Wiring)
PBX Cables Infinity Wiring
Telkom Infrastructure
Private Infrastructure
Jumper Cable
First Floor PBX System
Ground Floor Single Phone
PBX
Second Floor Single Phone
Second Floor Single Phone
Telcom Trunk lines
Krone Connection Block
TYPICAL BUILDING DISTRIBUTION
PBX- Private Branch Exchange PABX- Private Automatic Branch Exchange DP- Distribution Panel
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Telephone Exchange
No call in Progress
Call in Progress
Xchange = ( Large Group of Switches )
BASIC LAND LINE TELEPHONE SYSTEM
Central Exchange
Central Exchange
Sub Exchanges Jim
Alice
Call from Jim To Alice
Sub Exchanges
Sub Exchange
Cable, Microwave, Radio, Fiber Optic
Jim Alice
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PABX Equipment
Telephone Exchange
Company Premises
User Extensions
Building Cabling
Incoming Telkom Lines from Exchange
Private Automatic Branch Exchange Telkom
Cell Phone Routers
This Part Installed by Infinity Cabling
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Ratio of Telkom lines to extensions is determined by user requirements, however PBX Systems are supplied with a specific number of lines/ext. System should be chosen carefully with upgrade options available for expansion.
PABX Equipment
Telephone Exchange
Company Premises
User Extensions
Building Cabling
Incoming Telkom Lines from Exchange
Private Automatic Branch Exchange Telkom
Cell Phone Routers (Quantity chosen by Pabx User )
This Part Installed by Infinity Cabling
sim
Cell Phone Network
“call to cell phone “
Wireless signal Transmitted
sim sim
Extension call to cell number, routed to cell network directly To bypass Telkom system to save cost on connection charge
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DECT TECHNOLOGY
Digital Enhanced Cordless Telecommunications
Called “Cordless Phones, Wireless Handsets etc “
Basic System
Base Station/ Battery Charger Telecom Line
DC Power
DECT Handset
Typical Unit
This Phone is a fixed line system with a Wireless handset (range +/- 30 mtrs )
Multiple Handset System
Answering Machine, intercom, call holding etc.
Base Station Chargers
PABX PBX
DECT Enabled Pabx system
Telecom Lines
Wired Handsets
DECT Base Station
Line / ext
DECT Handsets BS2/2 DECT Base Station
Example SIEMENS
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Pronounced “dek”
Cable under test
Tone Generator
Magnet Field around Cable (caused by Tone generator )
Amplified Probe (Detects magnetic field and generates an audible tone)
Ampli
fied P
robe
Antenna
Basic Tone Generator Operation
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The probe will amplify all signals detected on cable including voice conversation, noise, data etc. This may cause the generated tone not to be heard.
Tone Generator Transmits a data word over and over
Magnet Field around Cable
Amplified Probe Detects data word and turns on green Sync light. As the probe gets physically closer to cable being searched for an audio tone is generated and signal strength lights turn on.
Amplified Probe
FLUKE Intellitone Tone Generator Operation
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0110101
0110101 0110101
0110101
0110101
The Fluke Probe only listens for a specific code and ignores all other signals present on cables
Adsl Router
pc
Network Cable
TEL. Wall Socket
Adsl Router
pc
Network Cable
TEL. Wall Socket
Standard ADSL Installation
Additional Telephone Outlets Network Cabling
if Multiple PC’s on single ADSL Router/Switch
Adsl Router
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ADSL FILTER
F
FAX MC
F
Voice Service
Telephone Line
Telkom
F
Nb: All Voice Services Have same number !
Telephone Cabling
Switch Telephone Cable
Network Cable
ADSL Asynchronous Digital Subscriber Line
Telephone Line
Telkom