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TELECOMMUNICATION Reviews > Part 3 Telecomm Installation > Flashcards

Part 3 Telecomm Installation Flashcards

1
Q

Which pins are used for the following outlets and what colour wires terminate on them –

a) A 610 telephone outlet
b) A Krone Media outlet
c) An RJ45 outlet used for a telephone service
d) A 611 mode 3 alarm outlet, both incoming and outgoing pairs

e) A modular mode 3 alarm outlet, both incoming and outgoing pairs

A

a. (2-white, 6-blue)
b. (5-white, 4-blue)
c. (5-white, 4-blue)
d. (I/C 5-white, 4-blue; O/G 6-white, 3-blue)
e. (I/C 2-white, 6-blue; O/G 1-white, 5-blue

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2
Q

Name the two forms a cabler completes at the end of a cabling job. Which one is Mandatory?

A

(Mandatory – TCA1; Optional – TCA2)

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3
Q

Why is only one wire permitted to be terminated in a slot
in a Krone Media outlet installed at the Network Boundary?

A

(Because the carrier and customer conductors are different diameters, one will become loose)

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4
Q 
What is the colour of the wires for the 87th pair in a Category 3 indoor    		 
	telephone cable (10pr cellophane wrap groups)?
A

(Mate – Red;

Colour – Orange; Whipping – Brown/Brown)

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5
Q

What is the colour of the wires for the 29th pair in a Category 1 indoor telephone cable (banded colour code)?

A

(Mate – Yellow; Colour – Blue/Brown)

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6
Q

What is another term for a –

a) Floor Distributor (FD)?
b) Local Distributer (LD)?
c) Building Distributer (BD)?
d) Campus Distributer (CD)?

A

a. (IDF – Intemediate Distribution Frame)
b. (FDP – Final Distribution point)
c. (MDF – Main Distribution Frame {Network boundary or not})
d. (MDF – Main Distribution Frame - Network Boundary)

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7
Q

What is the primary purpose of a CES System?

A

(Earth – Protective and Functional)

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8
Q

What is the primary purpose of the TRC?

A

(Earth - Functional)

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9
Q

What is the primary purpose of a TFEE?

A

(Earth Electrode for the TRC – Functional earth only)

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10
Q

Name 3 types of Registered Jack that are used in Australia.

A

(RJ45, RJ12, RJ11)

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11
Q

What are the primary colour pairs used in data cable construction?

A

(Blue, Orange, Green, Brown pairs each with white mates)

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12
Q

What is the primary purpose for using a KRONE MODE 3 socket?

A

(Security alarm systems, also Nurse call)

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13
Q

Define both Campus and Building Backbone Cabling.

A

(Campus - fixed cabling between buildings on a campus

Building - fixed cabling within an individual building)

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14
Q

What are the primary colour pairs used for 3 pair telephone cable?

A

(Pair 1 white blue;

Pair 2 red black; Pair 3 orange green)

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15
Q

What are the basic items of information contained in the cable record book
located at each distributer?

A 
(Where you are  distributer name
 Incoming fixed cable info
Outgoing fixed cable info 
Customer service details
Cross-connect details)
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16
Q 
For what reason is the cable core of an underground cable typically filled
 with grease (gel)?
A

To prevent the longitudinal movement of water/moisture along the cable core
[S008 5.6.8 note 1 page 25 and S009 18.4 (b) Note 2 page 87]

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17
Q
  1. Draw the Australian Standard symbols representing –

a) double floor outlet
b) coax cable
c) 4 pair cable
d) single ceiling mounted outlet
e) riser shaft

A

a. [appendix ‘F’ Handbook 29 pages 123 – 128]

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18
Q

State the colour of the wire on pins 1 to 8 in an RJ45 outlet using terminating
type 568a. Make sure you relate the mates to their colours.

A 
Pin1 	 mate of green
Pin2	 green
Pin3 	mate of orange 
Pin4 	blue		
Pin5	mate of blue 
Pin6	orange
Pin7	mate of brown
Pin8	brown

[HB29 fig 4.1 (a) page 64]

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19
Q

What is the construction of FTP cable?

A

All four pairs as a group enclosed in foil with a drain wire included under the sheath; [handout sheet]

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20
Q

How is Sc/FTP cable constructed?

A

Each pair separately enclosed in foil with all four pairs as a group enclosed in braid
[handout sheet]

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21
Q

Why do we stagger cable attachments when pulling in multiple cables?

A

(to present a tapered leading edge to reduce the chance of snagging)

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22
Q

List four facilities that a Network Boundary MDF provides

A

1 termination point for the carrier’s lead-in cable
2 distribution point for the customer cabling
3 surge arrestor installation point
4 test position
5 point of origin for the TRC
6 cross connect point between the carrier’s network and customer

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23
Q

How is underground non-metallic conduit marked?

A

(if white PVC, the word ‘Communications’ every 1 to 3 metres

If Polyethylene, a moulded continuous white stripe[s])

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24
Q

What effect does rotational (torsion) force have on a cable’s internal construction?

A

(it can disrupt the pair’s twist ratio)

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25
Q

List four ways a cable can be damaged whilst being installed.

A

(stretched,
kinked,
friction burn of

sheath,
damaged sheath by pulling
around rough edges,

twisting stress)

26
Q

Why must we be aware of hazardous services whilst installing data cable?

A

personal safety and mandatory separations

27
Q

Why must also we be aware of non-hazardous services whilst installing data cable?

A

mandatory separations

28
Q

Why must we know the NVP (nominal velocity propagation) of the data cable we are installing?

A

so that the TDR can result an accurate length; [HB29 5.2.3 (f) page 82]

29
Q

Where in the installation is a mode 3 alarm outlet installed?

A

the first outlet in the circuit, before any telephone outlets

30
Q

List three poor installation practices which cause excessive Return Loss.

A
  • Poor punch down techniques,

- Tight cable ties and - Tight bend radii; [HB29 5.2.13 page 90]

31
Q

What causes Attenuation of the signal.

A

Attenuation is loss of signal strength due to increasing length and frequency; [HB29 5.2.4 page 82]

32
Q

What is ACR (attenuation to crosstalk ratio)?

A

The difference between crosstalk loss and insertion loss; [HB29 5.2.6 page 84]

33
Q

In what units is Delay Skew measured?

A

nanoseconds i.e. 1/1000,000,000 sec; [HB29 fig 5.12 page 86]

34
Q

What is an NTD used for?

A

The Carriers Network Boundary equipment at a house or shop

35
Q

What is the minimum IP rating for an NTD?

A

(IPX3)

36
Q

How deep underground must the conduit be for the lead-in across a front yard?

A

(300mm)

37
Q

What are the colours for the 1st and 2nd pairs in a lead-in cable?

A

(white, blue, red, black)

38
Q

Why must PVC sheathed cable be either painted or put in conduit if installed outdoors?

A

(to protect it against UV radiation)

39
Q

Why must cabling records to be done in pencil or software?

A

(because they change regularly)

40
Q

Name the 10 basic colours used to define the pairs in a 100 pair Category 1 cable.

A

(blue, orange, green, brown, slate, white, yellow, black, violet, red)

41
Q

Define the term ‘network boundary’.

A

(It is the demarcation point between the Carrier’s network and the Customer cabling)

42
Q

Define the term ‘lead-in cable’.

A

(The Carrier’s cable from the street to the network boundary)

43
Q

What is the maximum height an NTD can be mounted above ground level?

A

(1800mm)

44
Q

Why do most fibre optic cables have Kevlar strength members instead of metal?

A

(If don’t have any conductive elements they are exempt some of the separation requirements)

45
Q

What is used for Heavy Duty conduit for telecommunications use, and how is it marked?

A

(Polyethylene pipe, it has moulded white stripes on it)

46
Q

What is a ‘wire map’?

A

(a wire map tests the conductor connections end-to-end)

47
Q

What is the difference between a ‘split pair’ and a ‘transposed pair’?

A

(Split – The mate and colour of two separate pairs are mixed

Transposed – two complete pairs are swapped over at one end

48
Q

What does ‘crosstalk’ mean with respect to multi pair copper cables?

A

(Inductive coupling between pairs or conductors)

49
Q

How are the ‘verticals’ and ‘pairs’ labelled on an MDF?

A

Verticals – Alphabetically left to right, omitting ‘I’ and ‘O’
Pairs – Numerically from bottom, (left to right), to top [S009 13.12 page 69]

50
Q

What is the primary difference between a ‘patch cord’ and a ‘jumper’?
.

A

Jumpers - Hardwired cross-connects for voice grade telephony; Patchcords - Plug-in
cross-connects for data circuits

51
Q

Where exactly is the network boundary on an MDF?

A

On the jumperable side of the Customer’s Termination Module or,
at the customer end of the network jumper.

52
Q

State 3 ways of differentiating between a 610 and a 611 socket.

A

610 – link between terminals 2 and 3

611 – raised semi-circles on lid

611 has adjustable contacts and 610 contacts are fixed

A properly manufactured 611 has a shaped locating groove.

53
Q

Where on the premises is the NTD typically installed?

A

Typically on the outside of the front wall of the building.

54
Q

What is the common name for an 8P4C outlet?

A

Krone Media Outlet (it has a grey nose)

55
Q

Name two types of socket outlet that may be found at the network boundary.
A 610 or 8P4C.

A

(Could also be a 611 or a Blue nosed mode 3 modular outlet in the case of alarm system or nurse call installations)

56
Q

Name two types of socket outlet that may be found beyond the network boundary.

A

610, RJ45, RJ12, 611 etc. (Any outlet which complies with the requirements of S008)

57
Q

What are the colour requirements for underground non-metallic communications conduit?

A

It must be either white or in the case of heavy duty polyethylene, have white stripe(s).

58
Q

Name the two forms a Cabler may complete at the end of a cabling job.

A

TCA1 and TCA2 The TCA1 is mandatory.

59
Q

What is a fire stop system when is it used.

A

When. Wiring system pass through a fired rated wall. Proprietary fire stop system must be installed

60
Q

Name five 5 fire stop systems

A
  1. Pillow
  2. Mortars
  3. Coated panels
  4. sealants/ mastics
  5. putties
  6. RTV siliscon foams

TELECOMMUNICATION Reviews (2 decks)

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