telecommunications spaces. work area wa work area work area (wa) telecommunications outlet (to)...

TELECOMMUNICATIONSSPACES

WORK AREA • WA •

Work Area

Work Area (WA)

Telecommunications Outlet (TO)

Horizontal subsystemcables

Equipment and patch cords

Horizontal Cross-connect connecting hardware

Horizontal Cross-connect

Work Area

• Work Areas are those spaces in a building where occupants interact with their telecommunications devices.

• Work Area elements are situated between the Horizontal cabling system end point on the Telecommunications Outlet and Work Area active equipment.

• The Work Area cabling system efficiency has a great impact on the distribution system operation.

• The special feature of the Work Area cabling system is its versatility and ability to introduce changes easily.

Work Area

• Work Area elements are:

– Telecommunications Outlet or Multiuser Telecommunications Outlet,

– Equipment cables (cords),

– Adapters, converters, couplers/splitters,

– Telecommunications equipment (telephones, computers, modems, terminals, etc.).

• Active telecommunications equipment and adapters (converters, couplers) are not considered part of the telecommunications cabling system and are not included into the Signamax Cabling System.

CABLING SYSTEM

Telecommunications Outlet

• Telecommunications Outlet/connector is a fixed connecting device where the horizontal cable terminates.

• The Telecommunications Outlet/connector provides the interface to the Work Area cabling.

• The Telecommunications Outlet/connector in the Work Area is the point at which end-user equipment "plugs into" the building telecommunications utility formed by the pathway, space, and building cabling system.

• The Telecommunications Outlet/connector at the same time is an element of the Work Area and Horizontal subsystem.


1 Telecommunications Outlets used in Work Areas of the Signamax Cabling System shall comply with the requirements given in section “4.2 Connecting hardware” of the SCS Manual.


2 The Horizontal subsystem cables installed toWork Areas and not terminated at Telecommunication Outlets/connectors are not part of the Signamax Cabling System and shall not be applied for warranty provision.


3 All 4 pairs of the twisted-pair Horizontal subsystem cable shall be terminated in one connector ofthe Telecommunications Outlet or Multiuser Telecommunications Outlet at the Work Area.


4 Pin/pair assignments of Telecommunications Outlet shall correspond to T568A or T568B wiring schemes.

1

2

34

T568A

W-G

G

W-O

BL

W-BL

O

W-BR

BR

1 2 3 4 5 6 7 8 W-O

O

W-G

BL

W-BL

G

W-BR

BR

1 2 3 4 5 6 7 8

1

3

24

T568B


1In the Signamax Cabling System two wiring schemes may be used at the same time.However, this is not recommended due to possible errors in installation, maintenance, and active equipment connection to the cabling system.

T568AT568B

T568A

T568B


5 Optical fiber cables of the Horizontal subsystem shall be terminated at the duplex Telecommunications Outlet in the Work Area.


2The SC and LC type adapters are recommended for use in Telecommunications Outlets at the Work Areas of the Signamax Cabling System.

3It is not recommended to use ST type adaptersin Telecommunications Outlets at the Work Areasof the Signamax Cabling System.Their use should be limited to those cases when optical fiber connecting hardware with ST type connectors is already installed in the cabling system.


4In order to unify the cabling infrastructure and simplify its maintenance the same type of optical fiber adapter should be used for all Telecommunications Outletsat all Work Areas of one cabling system.

Equipment Cords

6 Twisted-pair and optical fiber equipment cords used to connect active equipment to the Telecommunications Outlet at the Work Area in the Horizontal cabling subsystem Channel model shall meet the requirements given in section “4.3 Equipment and patch cords” ofthe SCS Manual.

Equipment Cords

• All other types of equipment cords which do not meet requirement 6 and are not included in the Signamax Cabling System Approved Component Schedule, are considered to be adapters (devices supporting operation of specific applications), can be used to connect active equipment of the Work Area to the Horizontal cabling subsystem, but are not covered by the Signamax Cabling System warranty and any malfunctions of the telecommunications system operation caused by these cords do not fall within Signamax warranty obligations.

Adapters

• When used, cabling adapters in the Work Area may degrade the transmission performance of the telecommunications cabling system.

• Therefore, their compatibility with premises cabling, equipment, and applications must be considered before they are connected to the telecommunications network.

Adapters

7 Specialized devices designed to support specific applications shall not be used as part of the Horizontal cabling subsystem of the Signamax Cabling System, and, in case of application they shall be kept external to the Telecommunications Outlet.

TELECOMMUNICATIONS PATHWAYS AND SPACES

Outlet Mount Box

• The mounting box of the Telecommunications Outlet is an intermediate element between the Horizontal subsystem cable and the Work Area cable.

• The following are the most widely used ways to install the mounting boxes:

– in or on the wall (or on any surface applicable for mounting)

– in the perimetral pathway (cable raceway)

– in the furniture pathway

– on the flexible hose or conduit

Outlet Mount Box

8 Telecommunications Outlet shall be tightly fixed onthe chosen place using the means and methods according to the manufacturer instructions.

Outlet Mount Box

9 Telecommunications Outlet shall provide:

• termination protection• support the required bend radii• ensure the recommended cable slack of

the Horizontal cabling subsystem

Outlet Location

10 Cable surface work (outside of enclosed pathways)at the Work Area of the Horizontal subsystemtowards the Telecommunications Outlet/outlet boxis not allowed.

Outlet Location

5The Telecommunications Outlet should be mountedat a distance no more than the standard length ofthe Work Area equipment cord from active equipment location area.

Outlet Density

6When planning the Telecommunications Outlets locations it is recommended to use an averaged Work Area space size of 10 m2 (100 ft2).

Specific Work Areas

7A dedicated telecommunications pathway should be installed to such Work Areas as control centers, attendants, and reception areas from Telecommunications Room, Equipment Room, or Entrance Facility.

TELECOM ROOM • TR •

Telecommunications Room

Work Area (WA)

Backbone subsystemcables

Cross-connectconnecting hardware

Cross-connect


• Telecommunications Rooms (TRs) offer many different functions to the cabling system and are often considered as a distinct subsystem within the hierarchical cabling system.

• The most important function of a Telecommunications Room is the termination of Horizontal and Backbone subsystem cables to compatible connecting hardware.

• A Telecommunications Room may also includethe Intermediate Cross-connect or the Main Cross-connect for different parts of the Backbone cabling subsystem.


• A Telecommunications Room provides the means for administration and routing of the equipment cables/cords from the Horizontal Cross-connect to the telecommunications equipment.

• In some cases, the Demarcation Point and associated protection apparatus may also be located inthe Telecommunications Room.

• A Telecommunications Room also provides a controlled environment to house telecommunications equipment, connecting hardware, and splice closures serving a part of the building.

CABLING SYSTEM

Cabling System

1 Horizontal and Backbone subsystem cables shall be terminated in the Telecommunications Room on connecting hardware meeting the requirements of section “4.2 Connecting hardware” of the SCS Manual.

Cabling System

2 It is not allowed to move Horizontal and Backbone subsystem cable termination points in the Telecommunications Room to introduce standard changes to the connection scheme.Equipment and patch cords shall be used for these purposes.

Cross- and Interconnections

3 In the Horizontal Cross-connect of the Signamax Cabling System located in the Telecommunications Room the cross-connection method shall be applied to connect active equipment with multiport connectors to the Horizontal cabling subsystem and to provide passive connection between cable segments of the Horizontal and Backbone subsystems.

Cross- and Interconnections

1The interconnection is allowed in the HorizontalCross-connect of the Signamax Cabling System located in the Telecommunications Room to connect active equipment with single-port connectors tothe Horizontal cabling subsystem.

Pathways and Spaces

• The Telecommunications Roomon each floor is the acceptedlocation of the common accesspoint for Backbone andHorizontal subsystem pathways.

Space

4 The Telecommunications Room space shall be designed and equipped to provide installationof active telecommunications equipment, connecting hardware for termination of Backbone and Horizontal subsystems and cross-connect cabling(cross-connect jumpers, equipment and patch cords).

Location

2The Telecommunications Room should be locatedas close as possible to the center of the floor(s) areait services and preferably in the building core area.

Codes Requirements

5 In Telecommunications Room design all applicable regulations (electrical, building, occupational safety, etc.) shall be considered.

Functions

6 The Telecommunications Room space shall be used only to provide work of telecommunications systems and associated service systems.The Telecommunications Room space shall not be used to house power supply systems not relating to telecommunications systems and external service equipment (i.e. water supply systems, HVAC, etc.).

7 The Telecommunications Room shall meet the requirements specified in “CABLING SYSTEM PROTECTION” section of the SCS Manual.

Layout


Location and Size

3It is recommended thatthe TelecommunicationsRoom be located onthe same floor asthe Work Area it serves.

HC MC/IC

EF/ER/TR

HC

TR

HC

TR

HC

TR

TO WA

TO WA

TO WA

TO WA

HC

TR TO WA

HC

TR TO WA

Building A

Location and Size

HC IC

EF/ER/TR

HC

TR

TO WA

TO WA

TO WA

TO WA

HC

TR TO WA

TO WA

Building B

8 Work Areas shall be servedby the Horizontal Cross-connect located inthe TelecommunicationsRoom on the sameor adjacent floor.

Location and Size

• Based on standards Work Area sizes 10 m2 (100 ft2), recommended minimum sizes of the Telecommunications Room can be found in the table below:

Floor Serving Area,m2 (ft2) TR Size, m (ft)

1,000 (10,000) 3.0 х 3.4 (10 x 11)

800 (8,000) 3.0 х 2.8 (10 x 9)

500 (5,000) 3.0 х 2.2 (10 x 7)

Location and Size

• Additional Telecommunications Rooms (one for each area up to 1,000 m2 (10,000 ft2) should be provided when:

– the floor area over 1,000 m2 (10,000 ft2) is to be served,

– the Horizontal distribution distance to the Work Area is more than 90 m (295 ft).

TR A

TR B TR C

Building core area

78 (3) trade size conduit


Area B 530 m2 (5,300 ft2)

Area C 530 m2

(5,300 ft2)

Area A 800 m2

(8,000 ft2)


Backbone Linkage

5To make a flexible distribution infrastructure, backbone linkage between several Telecommunications Rooms located on the same floor should be established using a telecommunications pathway equivalent to at least one conduit of 78 mm (3 in) trade size.

TR A

TR B TR C

Building core area



Area B 530 m2 (5,300 ft2)

Area C 530 m2

(5,300 ft2)

Area A 800 m2

(8,000 ft2)


Floor Loading

9 The requirements for floor loading where the Telecommunications Room is located shall be followed when designing the Telecommunications Roomand installing telecommunications equipment there.

Floor, Walls, and Ceiling

6False ceilings should not be used to make a flexible distribution system in the Telecommunications Room.

Lighting

7Recommended lighting level where installationand maintenance works take place inthe Telecommunications Room should be not lessthan 500 lux (50 foot candles).

Power Switches

8The lighting switches should be located at the entrance into the Telecommunications Room.

Doors

9To ensure telecommunications equipment deliverythe Telecommunications Room door should beat least 90 cm (36 in) wide and 2 m (80 in) high,have no threshold, be outward-opening, sliding,or removable, equipped with a lock, and have restricted access for authorized personnel only.

Power Supply System

10A minimum of two dedicated 120–240-V nominal,20-A rated, non-switched, ac duplex electrical outlet receptacles, each on a separate 20-A branch circuit, shall be provided in the Telecommunications Roomfor equipment power.

Grounding

10 Safety grounding system of the Telecommunications Room shall comply with requirements of appropriate codes.

11To ensure normal operation of the telecommunications systems an access to telecommunications bonding and grounding system should be provided inthe Telecommunications Room.

Fire Protection

11 Fire protection of the Telecommunications Room,if required, shall be provided as per applicable codes.

HVAC

12The Telecommunications Room should be equipped with the HVAC system.

Alternative Spaces

• In buildings with total size of the service area of up to 500 m2 (5,000 ft2), on floors with service area size of up to 100 m2 (1,000 ft2) and in cases when there is no opportunity to make a separate TR on the floor, small closets (for example, built-in closets) and equipment cabinets(floor and wall mount) can act as TRs.

Alternative Spaces

13Equipment cabinets can be used in the Signamax Cabling System as a Telecommunications Roomif they are protected against unauthorized access, located in a strictly fixed place and all applicablecodes such as electrical and occupational safety regulations are complied with.

Alternative Spaces

14Equipment cabinets used as a Telecommunications Room according to condition 13 of section“8.2.3.2.6 Telecommunications Rooms in small buildings and alternative spaces” of the Manualcomply with all requirements and recommendations defined for the Telecommunications Room in this section of the Manual.

EQUIPMENT ROOM • ER •

Equipment Room

Work Area (WA)



Cross-connect

Equipment Room

• The main function of the telecommunications Equipment Room is to provide a specially equipped area to terminate Backbone subsystem cables on connecting hardware of the Main and Intermediate Cross-connects.

• Equipment Rooms (ERs) are considered different from Telecommunications Rooms because of the nature or complexity of the equipment contained in them.

• An Equipment Room may provide any or all of the functions of a Telecommunications Room or Entrance Facility.

Equipment Room

• An Equipment Room provides a controlled environment to house telecommunications equipment, connecting hardware, splice closures, grounding and bonding facilities, and protection apparatus where applicable.

• An Equipment Room may also house equipment terminations (and may contain Horizontal subsystem terminations for a part of the building).

• In many cases, the Equipment Room has access provider trunk terminations, premises network terminations, Demarcation Point (DP), and auxiliary terminations.

CABLING SYSTEM

Cabling System

1 Horizontal and Backbone subsystem cables shall be terminated in the Equipment Room on connecting hardware meeting the requirements of section“4.2 Connecting hardware” of the SCS Manual.

Cabling System

2 It is not allowed to move Horizontal and Backbone subsystem cable termination points in the Equipment Room to introduce standard changes to the connection scheme. Equipment and patch cords shall be used for these purposes.

Cross- and Interconnection

3 In the Main, Intermediate and Horizontal Cross-connects of the Signamax Cabling System locatedin the Equipment Room the cross-connection method shall be applied to connect active equipment with multiport connectors to the Horizontal and Backbone cabling subsystems and to provide passive connection between cable segments of the Horizontal and Backbone subsystems.


1The interconnection is allowed in the Main, Intermediate and Horizontal Cross-connects ofthe Signamax Cabling System located inthe Equipment Room to connect active equipmentwith single-port connectors to the Horizontal and Backbone cabling subsystem.

Space

4 The Equipment Room space shall be designedand equipped to provide installation of active telecommunications equipment, connectinghardware for termination of Backbone andHorizontal subsystems and cross-connect cabling (cross-connect jumpers, equipment and patch cords).

Layout

Location

2The Equipment Room should be located as close as possible to the center of the floor(s) area it services and preferably in the building core area.

Codes Requirements

5 In Equipment Room design all applicable regulations (electrical, building, occupational safety, etc.) shall be considered.

Functions

6 The Equipment Room space shall be used onlyto provide work of telecommunications systemsand associated service systems.

The Equipment Room space shall not be used to house power supply systems not relating to telecommunications systems and external service equipment (i.e. water supply systems, HVAC, etc.).

Functions

7 The Equipment Room shall meet the requirements specified in “CABLING SYSTEM PROTECTION” section of the SCS Manual.

Location and Size

• When selecting the Equipment Room site, avoid locations with building components that restrict expansion such as elevators, core, outside walls, or other fixed building walls.

• The Equipment Room should be located close to the Backbone pathway.

• Access to shared-use space shall be controlled by the building owner or agent.

• Access should be provided to deliver large equipment to the Equipment Room.

Location and Size

• The Equipment Room should be sized so as to comply with the known requirements of specific equipment.

• Sizing should include expected future as well as present requirements.

• Where a room or space is intended to be used for more than equipment (e.g., equipment and either or both the Cross-connect/main terminal and Entrance Facility hardware), it shall be increased in size accordingly.

• When during the Equipment Room design the type of equipment to be installed there is unknown, (for example, when designing a new general-purpose office building), the following rules should be followed.

Size

3When designing the Equipment Room floor space, 0.07 m2 (0.75 ft2) of Equipment Room space for every 10 m2 (100 ft2) of Work Area space should be allowed.

The Equipment Room should be designed to a minimum of 14 m2 (150 ft2).

Size

• In special-use buildings (e.g., hotels, hospitals, laboratories) ER floor space should be based not on the total useful space of the building but on the known number of Was:

Work Areas ER Area, m2 (ft2)

1 – 100 15 (150)

101 – 400 35 (400)

401 – 800 75 (800)

801 – 1,200 110 (1,200)

Size

4To determine the Equipment Room size in special-use buildings information of section “8.3.3.2.2 Location and size” (Table 17) of this Manual should be used.

Location

5 If the Horizontal Cross-connect is located in

the Equipment Room, the Equipment Room should serve only those Work Areas that are located onthe same floor.

8 If the Horizontal Cross-connect is located inthe Equipment Room it shall serve only thoseWork Areas that are located on the same oradjacent floors.

Floor Loading

9 The requirements for floor loading wherethe Equipment Room is located shall be followedwhen designing the Equipment Room and installing telecommunications equipment there.

Floor, Walls, and Ceiling

6False ceilings should not be used to make a flexible distribution system in the Equipment Room.

7Minimum clear height in the Equipment Room should be 2.5 m (8 ft) without obstructions.

8Access floors are recommended in the Equipment Room to make a flexible distribution system there.

Lighting

9Recommended lighting level where installation and maintenance works take place in the Equipment Room is no less than 500 lux (50 foot candles).

10The lighting switches should be located at the entrance into the Equipment Room.

Doors

11To ensure telecommunications equipment deliverythe Equipment Room door should be at least 90 cm (36 in) wide and 2 m (80 in) high, have no threshold, be outward-opening, sliding, or removable, equipped with a lock, and have restricted access for authorized personnel only.

If large equipment will be delivered to the Equipment Room, a double door (1.8 m (72 in) wide by 2.3 m(90 in) high) without doorsill and center post should be used.

Power Supply System

12A minimum of two dedicated 120–240-V nominal, 20-A rated, non-switched, ac duplex electrical outlet receptacles, each on a separate 20-A branch circuit, shall be provided in the Equipment Room for equipment power.

Grounding

10 Safety grounding system of the Equipment Room shall comply with requirements of appropriate codes.

13To ensure normal operation of the telecommunications systems an access to telecommunications bonding and grounding system should be provided in the Equipment Room.

Contaminants

• The Equipment Room shall be protected from contaminants and pollutants that could affect operation and material integrity of the installed equipment.

• When concentrations of contaminants are greater than indicated in the table on next slide, vapor barriers, positive room pressure, or absolute filters shall be provided.

Contaminants

Contaminant Concentration

Dust 100 µg/m3/24 h

Chlorine 0.01 ppm

Hydrocarbons 4 µg/m3/24 h

Hydrogen Sulfide 0.05 ppm

Nitrogen Oxides 0.1 ppm

Sulfur Dioxide 0.3 ppm

• The Equipment Room contamination limits:

Fire Protection

11 Fire protection of the Equipment Room, if required, shall be provided as per applicable codes.

HVAC

14The Equipment Room should be equipped withthe HVAC system.

EMI Protection

12 The Equipment Room shall be located at suchdistance from the electromagnetic interference sources, which ensures that there is no negative impact on the telecommunications system operation.

ENTRANCE FACILITY • EF •

Entrance Facility

Work Area (WA)



Cross-connect

Entrance Facility

• The Entrance Facility (EF) consists of the telecommunications service entrance to the building, including the entrance through the building wall, and continuing to the entrance room or space.

• The Entrance Facility may contain the Backbone pathways that connect to the Main or Intermediate Cross-connect and to other buildings in campus situations.

• Antenna entrances may also constitute part of the Entrance Facility.

Entrance Facility

• The Entrance Facility includes the cables, connecting hardware, protection devices, and other equipment required to connect the outside plant facilities to the premises cabling.

• The Demarcation Point (DP) between the regulated access providers and the customer premises cabling may be part of the Entrance Facility.

CABLING SYSTEM

Cabling System

• The Entrance Facility contains connections between cabling used in the outside environment and cabling allowed forin-building distribution.

• This connection may be set up by means of a splice orother means.

• The Demarcation Point connecting access providers andthe customer premises cabling may be part of the Entrance Facility.

Cabling System

1 Horizontal and Backbone subsystem cables shallbe terminated in the Entrance Facility on connecting hardware meeting the requirements of section“4.2 Connecting hardware” of the SCS Manual.

Cabling System

2 It is not allowed to move Horizontal andBackbone subsystem cable termination points inthe Entrance Facility to introduce standard changesto the connection scheme. Equipment and patchcords shall be used for these purposes.


3 In the Main, Intermediate and HorizontalCross-connects of the Signamax Cabling System located in the Entrance Facility the cross-connection method shall be applied to connect active equipment with multiport connectors to the Horizontal and Backbone cabling subsystems and to provide passive connection between cable segments of the Horizontal and Backbone subsystems.


1The interconnection is allowed in the Main,

Intermediate and Horizontal Cross-connects

of the Signamax Cabling System located

in the Entrance Facility to connect active equipment

with single-port connectors to the Horizontal and

Backbone cabling subsystems.

Pathways and Spaces

• The entrance room or space is the element of the Entrance Facility that gives space for the placing and termination of protectors on the entrance cable and may include network interface devices.

• If network interface devices and telecommunications equipment are necessary in the entrance room, additional space will be required.

• Where an entrance room or space is intended to be used for more than protectors and interfaces (e.g., PBX equipment, cross-connect termination fields), its size shall be increased accordingly.

Pathways and Spaces

• The size of pathways, between the entrance point and the entrance room or space, shall be the same as the entrance pathways unless the route is through open accessible areas.

• In such cases, the pathway placed may be only for those cables initially installed with supporting structure adequate to meet future pathway requirements.

Pathways and Spaces

4 The Entrance Facility space shall be designed and equipped to provide installation of active telecommunications equipment, connecting hardware for termination of Backbone and Horizontal subsystems and cross-connect cabling(cross-connect jumpers, equipment and patch cords).

Pathways and Spaces

5 In Entrance Facility design all applicable regulations (electrical, building, occupational safety, etc.)shall be considered.

Functions

6 The Entrance Facility space shall be used onlyto provide work of telecommunications systemsand associated service systems.

The Entrance Facility space shall not be usedto house power supply systems not relating to telecommunications systems and external service equipment (i.e. water supply systems, HVAC, etc.).

Functions

7 The Entrance Facility shall meet the requirements specified in “CABLING SYSTEM PROTECTION” section of this Manual.

Location and Size

2For buildings with over 2,000 m2 (20,000 ft2) usable floor space, an enclosed room should be providedin the capacity of Entrance Facility.

Location and Size

• When selecting the Equipment Room site, avoid locations with building components that restrict expansion such as elevators, core, outside walls, or other main building walls.

• Accessibility for the delivery of large equipment tothe Entrance Facility should be provided.

• It is desirable to locate the Entrance Facility close tothe backbone pathway.

Location and Size

3In selecting the Entrance Facility location the location of other utilities, such as electrical, water, gas, and sewer, should be taken into account.

8 The Entrance Facility room or space shall be locatedin a dry area not subject to flooding.

Location and Size

4The Entrance Facility room or space should be located as close as practicable to the building entrance point and next to the electrical service room so as to reduce the length of bonding conductor to the electrical grounding system.

5An alternate Entrance Facility should be provided where security, continuity of service, or other special needs exist.

Location and Size

• Access should be provided to deliver large telecommunications equipment and large reels of cable to the Entrance Facility space.

• Access to shared-use space shall be controlled bythe building owner or agent.

• The Entrance Facility space should be located as close as practicable to the location where the vertical Backbone pathways rise throughout the building to the Telecommunications Rooms.This rule reduces the length and quantity of the associated pathways.

Location and Size

• If termination fields of Cross-connects are located inthe Entrance Facility, the size of the Entrance Facility space should meet the known requirements of a specific equipment, connecting hardware or wall terminals.

• In buildings with up to 10,000 m2 (100,000 ft2) of usable floor space, wall mounted terminating hardware may be appropriate.

• Buildings of larger floor area may require freestanding frames for cable terminations.The space shall be a minimum of 2.5 m (8 ft) wide and of sufficient length to house the floor-mounted freestanding frame.

Location and Size

• The Entrance Facility minimum termination wall length:

Gross floor space served, m2 (ft2) Wall length, m (ft)

1,000 (10,000) 1 (39)

2,000 (20,000) 1,1 (42)

4,000 (40,000) 1,8 (68)

5,000 (50,000) 2,3 (90)

6,000 (60,000) 2,4 (96)

8,000 (80,000) 3 (120)

10,000 (100,000) 3,7 (144)

Location and Size

• The Entrance Facility minimum termination floor space:

Gross floor space served, m2 (ft2) Floor space dimensions, m (ft)

10,000 (100,000) 3,5 х 3 (12 x 6.5)

20,000 (200,000) 3,5 х 3 (12 x 9)

40,000 (400,000) 3,5 х 4 (12 x 13)

50,000 (500,000) 3,5 х 5 (12 x 15.5)

60,000 (600,000) 3,5 х 6 (12 x 18.5)

80,000 (800,000) 3,5 х 7 (12 x 22.5)

100,000 (1,000,000) 3,5 х 8 (12 x 27.5)

Location and Size

6When determining the size of the Entrance Facility, containing Cross-connect termination fields the information given in section “8.4.3.2.2 Location and size” (Table 19 and Table 20) of this Manual should be used.

Floor Loading

9 The requirements for floor loading wherethe Entrance Facility is located shall be followedwhen designing the Entrance Facility and installing telecommunications equipment there.

Ceiling

7Minimum clear height in the Entrance Facility, containing Cross-connects termination fields,should be 2.5 m (8 ft) without obstructions.

8False ceilings should not be used to make a flexible distribution system in the Equipment Room.

Lighting

9Recommended lighting level where installation and maintenance works take place in the Entrance Facility is no less than 500 lux (50 foot candles).

10The lighting switches should be located at the entrance into the Entrance Facility.

Doors

11To ensure telecommunications equipment deliverythe Entrance Facility door should be at least90 cm (36 in) wide and 2 m (80 in) high, have no threshold, be outward-opening, sliding, or removable, equipped with a lock, and have restricted access for authorized personnel only.

If large equipment will be delivered to the Entrance Facility, a double door (1.8 m (72 in) wide by2.3 m (90 in) high) without doorsill and center post should be used.

Power Supply System

12A minimum of two dedicated 120–240-V nominal,20-A rated, non-switched, ac duplex electrical outlet receptacles, each on a separate 20-A branch circuit, shall be provided in the Entrance Facility forequipment power.

Grounding and Protection

10 Safety grounding system of the Telecommunications Room shall comply with requirements of appropriate codes.

13To ensure normal operation of the telecommunications systems an access to telecommunications bondingand grounding system should be provided inthe Telecommunications Room.

Fire Protection

11 Fire protection of the Entrance Facility, if required,shall be provided as per applicable codes.

HVAC

14The Entrance Facility should be equipped withthe HVAC system.

EMI Protection

12 The Entrance Facility shall be located at such distance from the electromagnetic interference sources,which ensures that there is no negative impacton the telecommunications system operation.

Water Infiltration

• The Entrance Facility should not be located below water level unless preventive measures against water infiltration are taken.

• The room shall be free of water or drain pipes not directly required in support of the equipment within the room.

• A floor drain should be provided within the room if there isa risk of water ingress.

Service Entrance Pathways

• The following should be considered in determining the total number of pathways required:

– type and use of building

– growth

– difficulty of adding pathways in the future

– alternate entrance

– type and size of cables likely to be installed


• There are four main methods of making service entrance pathways:

– underground

– direct buried

– tunnel

– aerial


15Design and installation of telecommunications entrance pathways are not a part of the Signamax Cabling System Design & Installation Practices.

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