8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 1/10
PIPES
The pipe networks to implement the various communication facilities are made of
thermoplastic self-extinguishing, halogen-free tubes, with reduced smoke opacity, made of
one of the following materials:
rigid insulating material, with smooth interior walls;
flexible insulating material, with smooth or wrinkled interior walls;
rigid metal with smooth interior walls and exterior walls smooth or corrugated;
flexible insulating material, with smooth interior walls.
The outside diameters (equivalent to nominal, commercial diameters) of the tubes (dn) are
usually the following: 20, 25, 32, 40, 50, 63, 75, 90 110, 125, 160mm.
The tubes are placed inside the concrete, about 3 cm in, and are involved in cement mortar of
the same composition of the plaster. The diameters of the tubes cannot be lower than that
indicated in the drawings, so that the threading of the cables is done easily, thus avoiding theuse of guides or trailers. The connections between the tubes themselves are made with
appropriate plastic fittings and properly bonded with water and acids resistant cellulosic glue.
No connections are allowed between different diameter tubes, these should only be made in
the appropriate boxes and appropriate devices.
Curves may be used, with a material identical to the tubes, where its curvature radius is
adapted to the diameter of the conductor.
Whenever there is a need to install pipes before concreting, they should have, in addition to
the features mentioned above, the mechanical strength to withstand the efforts of concreting.
It should therefore be applied pipes with increased resistance to mechanical actions.
CABLE TRAY
x/XTP, coaxial and fiber optic cables will be installed and properly tied in horizontal cable trays
along the corridors and circulation areas.
In any situation should be used the power cables tray to install communication cables. Also, it
should be guaranteed a physical separation between the paths of telecommunications cables
and the power cables to avoid electromagnetic noise issues in the data network. The following
table provides a list of distances one must comply to keep the characteristics of the proposed
category 6A network.
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 2/10
Cable types:
PW: Power
TEL: Telecommunications
No divider or non-
metallic divider Aluminum divider Metallic divider
PW: Not shielded
TEL: Not shielded200 mm 100 mm 50 mm
PW: Not shielded
TEL: shielded
50 mm 20 mm 5 mm
PW: shielded
TEL: Not shielded30 mm 10 mm 2 mm
PW: shielded
TEL: shielded0 0 0
There is no need for separation between power and telecommunication cables in the last 35
meters. If the distance exceeds 35 meters, only the last 15 meters may not admit the
maintenance of distances given in the table. In any case, the prohibition of sharing the same
pipe or cable tray by these two types of cables remains.
On routes where the cable tray is shared by the telecommunications operator cable, the
vertical distribution cables and the horizontal distribution cables, there should be a divider
between these, to separate each distribution cables throughout the installation.
UNDERGROUND MANHOLES
The building will have underground manholes, named CVRx, built of cement blocks and
enforced in accordance with the design shown below. They must comply with these minimum
measures:
CV TypeBody Side funil
Diameter
larger/smallerheight (H) width (L) lenght (C) height (H) width (L) lenght (C)
CVC0 120/60 110 - - - - -
CVC1 120/60 160 - - - - -
CVR1a - 100 60 75 - - -
CVR1b - 100/150/175 60 75 - - -
CVR2 - 100/150/175 75 120 - - -
CVR3 - 175 75 150 - - -
CVI0 - 190 120 180 - - -
CVI1 - 190 120 260 - - -
CVL1 - 190 120 305 190 125 65
CVT1 - 190 120 335 190 125 65
The rings, lids and fittings of the manholes will be provided by the Contractor. The lids of the
boxes located on the sidewalks should be lowered in order to be coated with the material
placed in them.
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 3/10
"C" TYPE BOXES
The boxes are designed and constructed to accommodate and protect the equipment that isinstalled in them. They can be made of metal, plastic or be part of the building.
The doors are fitted with locks of a universal type. They are fixed so that they cannot be
removed without the aid of appropriate tool. The hinges are internal and, when closed, the
door does not protrude out.
The boxes should have wooden bottom with a thickness not less than 2 cm, or rails with metal
slider and bolt, to allow the fixing of the structure that supports the modular units and should
be installed so that the doors have a minimum opening angle of 90°.
In order to avoid confusion with boxes for other purposes these boxes will carry a label with a
"TELECOMMUNICATIONS" record. The inner dimensions of these boxes are in the table below.
The placement of these boxes is such so that the top of the box is situated at:
0.5 m from the ceiling, for ceiling heights less than 3.0 meters;
2.5 m from the floor, for ceiling heights greater than 3.0 meters.
C1 Box type
"I" TYPE BOXES
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 4/10
The boxes for installing the sockets are designed and constructed to accommodate and protect
the equipment that you will install in them. The enclosure boxes will be made of rigid PVC,
resistant walls, provided with a cover of the same material with IP31 IK07, as a minimum.
The lids of the boxes will be wide enough to cover the boxes with 10mm overlap. The fixing of
the boxes is done by screws or chrome plated brass to ensure protection to the penetration of dust and insects.
In order to avoid confusion with boxes for other purposes these boxes will carry a label with a
"T" record. The interior dimensions of these boxes are in the following table:
I1, I2 and I3 type boxes
RACKS
The racks will accommodate all equipment associated with building local network and, in the
case of the main rack, facilities for communications with the outside. The racks can be floorracks or wall racks and cable entry shall be made, either at the bottom or top of them.
Its working height will be set based on the number of U's used, plus 30% free space. The racks
should also meet the following minimum requirements:
Rack mount 19 ";
Terminals suitable for grounding;
Equipped with category 6A patch panels with RJ45 female for connection of the x / XTP
cables;
The patch panels should support the identification of the RJ45; Have at least six single-phased power outlets;
To have ventilation slots located laterally along the top floor and behind the scenes;
Equipped with ventilation system, glands, pulleys and other necessary equipment for
its proper functioning;
Built of steel plate or aluminum with appropriate anticorrosive treatment;
It should allow the installation of fixed or sliding shelves to allow installation of
equipment that cannot be installed in 19" rack;
Must allow entry of cables without the damaging the insulation;
Should allow access by the front glass door, the rear and laterally by removing the panels;
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 5/10
On floor racks one should leave enough looseness on the cables so that the rack can be moved
about two feet in all directions, to facilitate cleaning and maintenance. The power outlets on
the rack should be connected to the UPS system.
S/FTP CABLE
S/FTP (Twisted Pair) Category 6A, with 4 pairs of 24 AWG copper, present an impedance of 100
ohms, in accordance with international technical standards.
The insulation should be LSHF. You should present the minimum requirements as listed in the
following table:
FREQ INS LOSSRETURN
LOSSNEXT PS NEXT ACRF PS ACRF
PROP
DELAY
ALIEN CROSSTALK
PS ANEXT PS AACRF
(MHz) (dB/100m) (dB/100m) (dB/100m) (dB/100m) (dB/100m) (dB/100m) (dB/100m) (dB/100m) (dB/100m)
max min Min min min min max min min1 2 20 78,3 76,3 71,8 68,8 570 67 67
4 3,7 24,2 69,3 67,3 59,8 56,8 552 67 66,2
8 5,2 26,3 64,8 62,8 53,7 50,7 546,7 67 60,1
10 5,9 27 63,3 61,3 51,8 48,8 545,4 67 58,2
16 7,4 27 60,2 58,2 47,7 44,7 543 67 54,1
20 8,3 27 58,8 56,8 45,8 42,8 542 67 52,2
25 9,3 26,3 57,3 55,3 43,8 40,8 541,2 67 50,2
31,25 10,4 25,6 55,9 53,9 41,9 38,9 540,4 67 48,3
62,5 14,9 23,5 51,4 49,4 35,9 32,9 538,6 65,6 42,3
100 19 22,1 48,3 46,3 31,8 28,8 537,6 62,5 38,2
155 24 20,8 45,4 43,4 28 25 536,9 59,6 34,4
200 27,5 20 43,8 41,8 25,8 22,8 536,5 58 32,2
250 31 19,3 42,3 40,3 23,8 20,8 536,3 56,5 30,2
300 34,2 18,8 41,1 39,3 22,3 19,3 536,1 55,3 28,7
350 37,2 18,3 40,1 38,1 20,9 17,9 535,9 54,3 27,3
400 40 17,9 39,3 37,3 19,8 16,8 535,8 53,5 26,2
500 45,3 17,5 37,8 35,8 17,8 14,8 535,6 52 24,2
Cables for connection of the panels (patchcords) will also have the above characteristics and
have lengths of 1, 2 and / or 3 m. These will be provided factory tested, properly bagged and in
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 6/10
several colors (by staining of the cables themselves) according to the functional area they
serve.
Should be provided a proof of approval on all tests. The installation of cables S / FTP should be
in accordance with the following principles:
• The cables should be connected seamlessly, without amendments, to the RJ45 jacks and
panels in the rack;
• The cable length should not exceed 90 meters;
• Isolation should be guaranteed by physical separation of cables S/FTP over power lines;
• The cables will be identified clearly and indelibly marked with the letter rack and the number
of plug, and ends at the points of derivation;
• Cables shall be secured at regular intervals in order to reduce the amount of traction;
• The connection cables must be done with caution so as to avoid folds that may cause the
decrease of the electrical properties of the cable;
The connection of S/FTP jacks and patch panels should be made according to the above
standards.
FIBER OPTIC
The vertical wiring, also referred to as the backbone, will consist of fiber optic cable 9 / 125 m
OS1 LSHF insulation, linking the main server rack with various secondary racks.
The vertical wiring normally goes through the various floors of the building, from building to
building and horizontally interconnecting areas far between. As general characteristics must
submit:
Standard single mode fiber ITU-T G.652
Wavelength cutoff 1,18 to 1,27µm
Modal field diameter 9,3 (8 to 10)µm (+/- 10%)Sheath diameter 125µm (+/- 3µm)
Silicone coating (coating) 245µm (+/- 10µm)
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 7/10
Roundness error of the sheath 2%
Attenuation for 1300nm from 0,4 to 1dB/km
Attenuation for 1550nm from 0,25 to 0,5dB/km
Chromatic dispersion 1285-1330nm 3,5ps/km.nm
Chromatic dispersion 1270-1340nm 6ps/km.nm
Chromatic dispersion at 1550nm 20ps/km.nm
As mentioned before, the choice of a modular solution allows the placing on the same panel of
various types of transmission media such as copper or fiber, must be safeguarded in the latter
case the radus of curvature as well as the reserve of about 1 meter fiber inside the box
organizer, perfectly adapted to the distribution panel.
The primary coating of the fibers must be made in silicone, acrylate or similar material and
should be easily removable by mechanical means, without changing the physical and chemical
characteristics of the fibers. The installation of fiber optic cable shall meet the following
aspects:
The connecting cables should connect optical fiber without interruption, amendments
or leads; The fiber cables shall be secured at regular intervals in order to reduce the amount of
traction;
The passage of optical fibers must be done with utmost care, not exceeding the
maximum tension and the specified radius of curvature;
All fiber must be connectorized on their panels;
COAXIAL CABLE
This cable consists of a bare copper center conductor, composed of high purity electrolytic
copper, and an insulation material covering the conductor. This means low ohmic resistance,
which is desirable within the lengths to which the cable is designed.
The attenuation values of the coaxial cables should be the values shown in the following
tables.
Attenuation of RG7 type cable
Freq. (MHz) dB/100 m
47 3,7
100 5,3
230 8,0
470 11,9
862 16,6
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 8/10
Freq. (MHz) dB/100 m
950 17,5
1750 24,5
2150 27,5
Attenuation of RG 11 type cable
Freq. (MHz) dB/100 m
200 6,2
500 10,1
600 11,0
750 12,3
862 13,1
950 15,2
1750 20,5
2150 23,0
Addition shall have the following characteristics:
Characteristic impedance of 75 ohms;
Copper center conductor with a diameter equal to 1.13 (RG7) and 1.65 mm (RG11);
Copper shield with 70% coverage (minimum);
PVC outer jacket white or black PE (free from halogens);
External diameter not exceeding 7 mm (RG7) and 10.5 mm (RG11);
RJ45 PLUGS
These must have the following characteristics:
8 contacts RJ45 plug;
Installation in PVC boxes embedded in the wall or bottom rail application;
With identification of links by color coding;
The support should be made of plastic, with cover contact protection, allowing a space
for their identification (labeling).
Each network point indicated on the plans shall consist of a single or double outlet (RJ45adapter module) application or an embedded application protruding box. The application that
supports the module should be tilted in order to promote compliance with the rules regarding
the minimum bend radius allowed for the cable. The material used will be free of halogens.
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 9/10
RJ45 Module
The module must indicate in a legible and identifiable way the wiring diagrams (color code) A
and B. Must comply with the RoHS Directive.
The benefits in terms of crosstalk (NEXT), as some other parameters, are particularly sensitive
to the twisted pairs. For that reason the maintainability of the twisted pair during the finishing
phase represents a critical factor.
Category 6 RJ45 module must:
Allow the cable termination of four pairs of copper from 24 to 26 AWG;
In case of errors, be disconnected and connected without degradation of the contacts
and the consequent change in benefits, at least 10 times;
The modules should exist in multiple colors, allowing applications to associate
different colors or different physical areas, making it easier to identify and manage. In
the case of the module should be shielded solutions can be identified by color code inthe module itself;
The recess of the female RJ45 connector should be placed on the bottom (in this position the
pin 1 is the leftmost).
Should be numbered in a conspicuous and provided for the purpose, indicating the
corresponding rack that gives you access and a sequence number corresponding to its location
in passive panels this rack (example: plug 14 of the rack 2 should be numbered 2-14).
FIBRE OPTICS PANELS AND PATCH CORDS
The fiber optic patch panels are to connect the passive fiber optic panels located in the racks,
and the switching equipment, and shall have the following characteristics:
Be made of the fiber optic cable described above; Must have the appropriate length for connection within the rack;
Terminated at both ends with two male plugs SC, indicating the transmission and
reception fiber. The usage of ST-type connectors is allowed, assembled in patches of
fiber optic SC / ST for connecting equipment assets that offer this type of connection;
Must have good mechanical characteristics that give them durability and resistance to
multiple uses;
Connected using Oven Cure Epoxy (preferencial) o Hot Melt Adhesive System
techniques
8/3/2019 Telecommunications Tech Specs
http://slidepdf.com/reader/full/telecommunications-tech-specs 10/10
The connectors are for fiber 9/125 micrometers and are supplied with a protective cap. The
patch's will be supplied pre-assembled and tested, and must present a certificate of
conformity to all the tests they’ve been subjected.
RJ45 PATCH PANELS
The distribution panels shall be equipped with CAT6A connectors, enabling the termination of
all cable sections and allow for standard rack mounting in 19 ".
In order to get the best optimization of the system, should be used modular distribution
panels. These panels must have rear support for the cables that are terminated there, thus
avoiding the mechanical stresses on them caused from its own weight. The panels shall permit
the placing of the same type of connectors suitable for the plug.
The distribution panels to be installed in various racks should be sufficient and necessary for
the operation of the facility and be sized taking into account the horizontal and vertical data
and voice cabling. These panels should allow placement of the same type of modules suitablefor the plug. The choice of a modular solution allows the placing on the same panel of various
types of transmission media such as copper or optical fiber.