Smartworld TelecommunicationsInfrastructure Guideline 062008

Telecommunications Infrastructure Guideline

Author: Smartworld Telecommunications Infrastructure Unit

Date: 23.06.2008

Document Reference: S_TIU_GL_001

Version : 1.2


Document Control

Change Record

Date Author Version Change Reference

01.05.2008 Malek A. Hunnon V1.0 Create initial documents

20.05.2008 Malek A. Hunnon V1.1 Add section 5 (bulk services)

29.05.2008 Malek A. Hunnon V1.2 Modify SCS for Residential scenario

Reviewers

Name Title Date

Mohseen Mustafa Project Manager 06.06.2008

Distribution

Copy No. Name Title

DWC developers, consultants and contractors


Table of Contents Introduction.1 1. Telecommunications Space:2

1.1 Telecom Entrance Facilities (TEFs) ........................................................................................ 2 1.1.1 Entry box ......................................................................................................................... 2 1.1.2 External conduits ............................................................................................................. 3 1.1.3 Internal Containment Linking ........................................................................................... 4 1.1.4 Entrance Room (ER) ....................................................................................................... 4

1.2 Main Telecommunications Room (MTR):................................................................................ 4 1.3 Telecommunications Room (TR): ........................................................................................... 8 1.4 Telecommunications Enclosures (TEs)................................................................................. 11 1.5 Termination Point (TP).......................................................................................................... 11

2. Building Telecommunications containment system:..12 2.1 Backbone Building Telecommunications Containment System (BBTCS): ............................ 13 2.2 Horizontal Building Telecommunications Containment System (HBTCS): ............................ 13

2.2.1Telecommunications Containment system within the work area..................................... 14 2.2.2 Telecommunications Containment system linking work areas with TRs. ....................... 15

3. Structured Cabling System (SCS)16 3.1 Horizontal Cabling System.................................................................................................... 17

3.1.1 Work Area: .................................................................................................................... 17 3.1.2 Horizontal Cables .......................................................................................................... 18

3.1.2.1 Special requirements for Commercial buildings:..................................................... 18 3.1.3 Patch Panel ................................................................................................................... 20

3.2 Backbone distribution system ............................................................................................... 20 3.2.1 Smartworld outside cable connection: ........................................................................... 20 3.2.2 Vertical backbone cables............................................................................................... 21 3.2.3 Patch panels and Patch Cord ........................................................................................ 21

4. Telecommunications supporting and environmental systems.24 4.1 Raised Flooring System........................................................................................................ 24 4.2 HVAC System....................................................................................................................... 25 4.3 Firefighting System............................................................................................................... 25 4.4 Power System ...................................................................................................................... 26 4.5 Lighting System .................................................................................................................... 26 4.6 Uninterruptible power system (UPS)..................................................................................... 27 4.7 Labeling System ................................................................................................................... 27

5. Bulk Services...28 GSM Infrastructure Guideline


Introduction Page 1 of 29 23-Jun-08

Fixed line infrastructure Guideline

Introduction The purpose of this document is to standardize guideline for telecommunications infrastructure and cabling within Dubai World Central Campus. This specification is to provide a comprehensive source of information and guidance for those involved with low voltage cabling installations within Dubai World Central campus. It is mandatory that these specifications are adhered to stringently by buildings developers and Consultants as well as Structured Cabling Contractors, for telecommunications related work within Dubai world Central campus. Smartworld telecommunications infrastructure guideline has been written following best practices and BICSI recommendations in addition to UAE Telecommunications infrastructure recommendations. Smartworld telecommunications infrastructure guideline document is divided into four main sections:

Telecommunications Spaces. Building Telecommunications containment system Structure Cabling System Telecommunications supporting and environmental systems


Telecommunications Space Page 2 of 29 23-Jun-08

1. Telecommunications Space:

In order to provide a high tech telecommunications services to DWC plots, Smartworld requires a space within buildings to house telecommunications equipments in order to extend the services to the end user. Those spaces will be required in several places within building and size will vary based on the type, size of the building and required telecom services. The telecommunications spaces will cover:

Telecom Entrance Facilities (TEFs) Main Telecommunications Room (MTR) Telecommunications Room (TR) Telecommunications Enclosure (TE) Telecommunications Termination Point (TP)

1.1 Telecom Entrance Facilities (TEFs) Each building within DWC should have the TEFs merely for Smartworld network service cables entrance, either one or two will be required based on building type (e.g., commercial, residential). TEF includes.

Entry box. External conduits. Internal containment linking. Entrance Room.

1.1.1 Entry box It is building contractor responsibility to construct an underground maintenance hole (MH) or Hand hole (HH) within developer plot limit and link it with the building wall and Smartworld telecom network MH poke out. MH or HH has to be concrete structure with heavy duty cover having DWC-Telecom mark. Size, location of the Entry box, and pipe linking will be based on Smartworld telecom network and subject to Smartworld approval in the design stage. For Entry box details please refer to Fig. 01(JRC 12 details)



Fig.01 (JRC 12 details) 1.1.2 External conduits Building contractor responsibility to provide and lay PVC conduits from the Entry box towards building wall and Smartworld telecom network MH poke out. Fig.02 (Plot Entry Details) The conduits to be laid underground at 60cm depth from proposed finished ground level with no sharp bends; each conduit shall have one pull rope. Conduits slopes downward to outside from the building wall, and both ends of the conduits must be sealed to prevent water ingress. Below table shows size and number of External conduits and entry box type:

Table 01 (Plot entry details) Note: Hotels, hospitals, or any critical buildings from Smartworld perspective to be considered as commercial.

Plot Type No. of Entry Boxes Type of the Entry

box No and size of conduits per entry

box Commercial 2 MH JRC12 2X100mm Residential 1 MH JRC12 2 X 100mm Mixed use 2 MH JRC 12 2 X100mm Villas 1 HH 60X60X90cm 2X50mm Warehouse 1 HH 60X60X90cm 2X50mm



Fig.02 (Plot Entry details) 1.1.3 Internal Containment Linking Since it is not possible in all cases that external conduits inter directly to entrance room a suitable containment to be considered is to extend the link in high level up to the entrance room A minimum of 300X50mm high level mounted GI cable tray to be provided from entry sleeves in the building wall. 1.1.4 Entrance Room (ER) Telecom entrance facilities must be located in accessible area or areas of a building and to be within max 15m from building entry sleeves. All outdoor Smartworld incoming telecom cables to be terminated within the Entrance room. Based on the size of the termination points and number of the incoming cables, ER can be a closet. Size, location and quality are subject to Smartworld approval in the design stage. Entrance Room can be a space within main telecom room (MTR) if the MTR located within 15m of building entry sleeves. The located space within MTR must be sufficient to accommodate the entry sleeves and outside plant (OSP) cables termination space. Refer to Fig.3 (MTR layout) 1.2 Main Telecommunications Room (MTR): Each building within DWC area must have a centralized space (MTR) which is environmentally controlled and secured from unauthorized access merely to house Smartworld telecommunications requirements that include but not limited to:

Smartworld telecommunication equipments. Active and Passive Racks. Outside plant cables linking with Smartworld telecommunication network. Internal linking cable which link the MTR with the other Telecommunication rooms in

the other floors. Containment system for power and telecommunication. Environmental controls. Power conditioning and backup system. Fire and smoke suppression or detection system



When designing the Main Telecommunications Room, below points are to be considered:

Main telecommunications Room must be located above the ground finished level and limited to Smartworld access since it can not be shared with other building services.

Main Telecommunications Room must be accessible to Smartworld team by 24 hours the

whole year including the weekends.

Main Telecommunications Room wall design should have one or more bearing walls as part of the room.

Main telecommunications Room should be dedicated for Smartworld telecommunications

use and it should be free of any environmental hazards that include but not limited to: o Water and sewage piping. o Building destruction power.

Vibration and acoustic noise level should be kept to a minimum.

Minimum separation space between electrical sources or pathways and

Telecommunications containment system must be maintained as per details provided in table 2.

Any water or other liquid ingress to Main Telecommunications Room should be prevented.

Main Telecommunications Room has to be away from any wet utilities either above it or

next to it.

MTR general requirements

o All high level services to be identified and exposed with no false ceiling. o A clear height of 3m to be provided from finished floor level.

o MTR height should be in the standard working criteria (not to exceed 4m height) to

avoid using ladder or scaffold. o Shaft opening for the riser pathways linking MTR with other Telecommunications

Rooms in the other floors to be in safely accessible area and to be sized based on the riser containment system.

o Telecommunications and power cables pathways design, location and size to be

based on the room layout and cabling design. Fig. 03 (MTR layout )

o Active and passive rack layout to be designed to maximize optimum used area with full accessibility for each rack from front and rear with 0.8mX0.8mX 2.3m space for each rack. Room layout will be subject to Smartworld approval in the design NOC stage.

o Sizing all environmental system and power requirements as per Smartworld

specifications. Refer to section 4.

o A 30cm antistatic Calcium Sulphate raised floor is required with 8.8kN concentrated load per tile. Fig.10 (Raised Floor System)

o Epoxy paint under the raised floor and 2-hours fire rating light color for room ceiling

and walls to minimize dust and enhance room lighting.



o A 1.2mX2.3m lockable door with 2-hours fire rating fully opening outward to provide additional usable space within MTR. The door to be perfectly sealed to prevent dust ingress to the room.

o Sufficient HVAC system to maintain room temperature and humidity must be

provided. Please refer to HVAC system section for design requirements and details.

o MTR must have a proper firefighting protection system, smoke and fire detectors, fire alarm system. Refer to section 4

o Based on the room size and total number of racks, power requirements to be

decided. Refer to section 4 o Lighting system is very important and it has to be designed in the right way to allow

recognizing coloring clearly since lots of systems within telecommunication rooms depend on color coding. Refer to section 4

o The Main Telecommunication Room sizing varies depending on the functionality

and size of the usable floor space to be served.

Below table shows the minimum size for the Main telecommunications Room:

Building Type Building Size MTR inner dimension No and size of

racks

Commercial and Residential Less than 4000m

2 3m X3m X 3m 2 no of 42U 0.8mX0.8m Commercial and

Residential Larger than 4000m2 and

less than 8000m2 3mX4mX3m 3 no of 42U 0.8mX0.8m

Commercial and Residential Larger than 8000m

2 5mX4mX3m 6 no of 42U 0.8mX0.8m

Warehouse ------ 3mX3mX3m 2 no of 42U 0.8mX0.8m

Villas ------ Shallow 0.6m deep X 1m wide X 1m height Fig. 04 --

Retails and Malls Less than 8000m

2 3mX4mX3m 3 no of 42U 0.8mX0.8m Retails and

Malls larger than 8000m2 5mX4mX3m 6 no of 42U 0.8mX0.8m

Table 02 (MTR details) The main Telecommunications Room should have a clear sign in Arabic and English to identify the room from outside. Room must have a clear readable room layout drawing in A3 size fixed in clear visible place within the room. In case of Bulk service option, Main Telecommunications Room and Customer IT room to be close by, preferable with shared wall and minimum of 1X300mm+1X150mm (50mm depth) high level cable tray connecting both rooms, with full access and max 70m length. MRT minimum size 3mX3mX3m in case of bulk service, other requirements will remain the same. For more details please refer to Bulk service section. Fig.03 (MTR layout)



Fig.03A (MTR layout 3mX3m)

Fig.03B (MTR layout 3mX4m)



Fig.03C (MTR layout 5mX4m) 1.3 Telecommunications Room (TR): Telecommunications room is required within DWC buildings generally to provide the link between the backbone and horizontal infrastructure. Based on the type of the plot, the telecommunications room place and requirements can be decided

For Commercial plots: each floor regardless of its size should have a TR located in the center of the floor and aligned vertically with other TR floors and MTR.

For Residential plots: each 3 floors regardless of size should have a TR located in the center of the floor and aligned vertically with other TR floors and MTR.

For multi-stories warehouses and malls: each floor regardless of size should have a TR located in the center of the floor and aligned vertically with other TR floors and MTR.

An additional TR will be required within the same floor or space if the length from the farthest telecommunication outlet to TR exceeds 90m based on floor horizontal pathways. The telecommunications rooms space is merely to house Smartworld telecommunications requirements, which include but not limited to:



Smartworld telecommunication equipments. Active and Passive Racks. Backbone and horizontal linking. Containment system for power and telecommunication. Environmental controls. Power conditioning and backup system. Fire and smoke suppression or detection system

When designing Telecommunications Room, below points has to be considered:

Telecommunications Room must be located vertically above MTR and limited to Smartworld access since it can not be shared with other building services.

Telecommunications Room must be safely accessible to Smartworld team by 24 hours the

whole year including weekends.

Main telecommunication Room should be dedicated for Smartworld telecommunication use and it should be free of any unrelated equipment such as water and sewage piping, duct, and building destruction power.

Electro-Magnetic Interference EMI should be considered in the design and minimum

separation space to be maintained. Table 02 (minimum separation distance)

Telecommunications Room has to be away from any wet utilities either above it or next to it.

TR environmental and other requirements:

o All high level services to be identified and visible. Any type of false ceiling is not recommended.

o A clear height of 3m must be maintained between high level services and floor

finished level when designing TR.

o Sufficient containment system to be provided between MR and floor or space work areas and to be sized based on the work areas linking requirements.

o Vertical shaft opening for the riser pathways linking to MTR and other

Telecommunication Rooms in the other floors to be in safely accessible area and to be size based on the riser containment.

o Telecommunications and power cables pathways design, location and size to be

based on the room layout and cabling design.

o Active and passive rack layout to be designed in a way to maximize optimum used area with full accessibility for each rack from front and rear with 0.8mX0.8mX 2.3m space for each rack. Room layout will be subject to Smartworld approval in the design NOC stage.

o Design should consider the max no of racks that can fit within the TR and size all

the environmental system and power requirements accordingly.

o A 30cm antistatic Calcium Sulphate raised floor with 8.8kN concentrated load per tile to be provided. Raised floor system will be required only if total number of UTP cables more than 500 per MR. Fig.10 (Raised Floor System)

o High level 2.4m from FFL (floor finished level) cable tray within TR to route cables from room entrance up to each proposed rack location, with full access when raised floor is not abdicable, allowing future additions, changes and moves.



o Epoxy paint under the raised floor and 2-hours fire rating light color for room ceiling and walls to minimize dust and enhance room lighting.

o 0.9mX2.3m lockable door with 2-hours fire rating fully opening outward to provide

additional usable space within TR. The door to be perfectly sealed to prevent dust ingress to the room.

o Sufficient HVAC system to maintain room temperature and humidity must be

provided. Please refer to HVAC system for design requirements and details.

o MTR must have a proper protection firefighting system, smoke and fire detectors, fire alarm system. Please refer to firefighting system section for design requirements and details.

o Based on the room size and total number of racks, power requirements to be

decided. For more details please refer to section 4 Power System.

o Lighting system is very important and it has to be designed in the right way to allow recognizing colors clearly since many systems within telecommunications rooms depend on color coding. Please refer to Lighting System section.

The minimum size for Telecommunications Room is 3mX2mX3m (height) to house two 19 inch 0.8X0.8 42U. Open rack is an option. Telecommunication Room should have a clear sign in Arabic and English to identify the room from outside. Room must have a clear readable room layout drawing fixed in clear visible place within the room. Villas having more than one floor, a junction box 20cmX 30cm X15cm flush mounted at 1.5m AFF with proper cover to be provided in each floor if distance from farthest telecommunications outlet is less than 90m; otherwise a shallow room will be required in each floor, considering that:

- All villas conduits have to be routed to the floor junction box, entering from top or side. - A link between each floor junction box and shallow room to be provided and sized based on

the cabling numbers and size.

Fig.04 (Shallow Room)



1.4 Telecommunications Enclosures (TEs) Telecommunications Enclosure can be proposed to house Smartworld telecommunications equipment, cable termination and cross connection. TE will be applicable based on the size of the building, type of required services. TE can be considered for the following:

When buildings require a telecom bulk service. Refer to section 5 bulk services. Warehouse scenario. Small telecom floors size less than 480sqm.

TE is much smaller than TR and it can be a wall mount secured cabinet. Size of TE will be based on cabling size and type of services required, and it has to be decided during NOC design stage. TE can be a 19 inch wall mount 9U-15U with 515mm depth cabinet with horizontal and vertical cable organizer,4-way rack mount power strip, and fan tray for air circulation within the cabinet. TE has to be located in proper secured, environmentally suitable area and access to be limited to Smartworld authorized staff only. TE location must have a proper lighting minimum equivalent to 500 lux, with one dual single phase 220v 13A power socket. 1.5 Termination Point (TP) TP is a space within office or retail area generally to provide the link between work areas horizontal cables and permanently TRs horizontal cable to each proposed office or retail. TP has to be located near entry, in proper secured, environmentally suitable area and access to be limited to Smartworld authorized staff only (TP is not a user interface) 19 inch wall mount 9U with 515mm depth cabinet to be used for TTP space Cabinet has to include minimum:

horizontal and vertical cable organizer, 4-way rack mount power strip, And fan tray for air circulation within the cabinet.

TP cabinet can be located in high level with proper access, and away from any wet or dampness services or hazardous locations. In case cabinet mounted above the false ceiling, a proper and visible sign to be provided indicating TP location. A dedicated TP to be consider for each proposed office space. Note: Each TP can serve max 480sqm, this to be considered in the design stage as a main factor when deciding TP locations.


Telecommunications Containment System Page 12 of 29 23-Jun-08

2. Building Telecommunications containment system: This part will cover the required containment system for backbone connectivity between MTR, TRs and the horizontal connectivity between TRs and work areas. Telecommunications containment system normally including two main sections:

Backbone Building Telecommunications Containment System (BBTCS). Horizontal Building Telecommunications Containment System (HBTCS).

The telecommunications containment system is merely to house Smartworld telecommunications cables and it should not house any other cabling system. In general, any type of telecommunications containment system must be free of any sharp edges which can damage cables during installation or operation. Telecommunications containment must be located away from any source of Electromagnetic interference (EMI). Table 02 shows the minimum spacing and separation from EMI sources.

Condition Minimum separation distance

Unshielded power lines or electrical equipment in proximity to open or non-metal HBTCS 610mm

Unshielded power lines or electrical equipment in proximity to grounded metal HBTCS 305mm

Power lines enclosed in a grounded metal conduit (or equivalent shielding) in proximity to grounded metal HBTCS

152mm

Electric Motors and transformers 1192mm

Table 02 (Minimum separation distance) Telecommunications containment system has to be located in dry areas avoiding wet and high level dampness areas to protect cables performance and characteristics. Size of the telecommunications containment system will be based on type and number of cables contained. Never use the same containment for fiber and copper cables. Use below table calculating the size of the cable trays:

Cable Tray Size (mm) No of Fiber cables No of UTP cables

150 x 50 10 100 200 x 50 20 150 300 x 50 30 200 450 x 50 45 300 600 x 50 60 400 900 x 50 90 600

Table 03 (Cable tray size) All telecommunications containment systems have to be labeled with printed Telecom sign using green color, and must have visible indication of its location when it is hiding by other systems.



2.1 Backbone Building Telecommunications Containment System (BBTCS): BBTCS to be provided between MTR and TRs to contain the cable connectivity and it has to be accessible all the way and fixable for adding and removing cables and having free space for any future requirement links. The vertical alignment for MTR with TRs in the floors will shorten the linking length and prevent accessibility by unauthorized people to Telecommunications shaft. The BBTCS must be for Smartworld use and any other cabling system should not lay on it. The BBTCS to be properly fixed and it has to be adjacent to a wall with clear mark identification. In case of BBTCS route diversion, a 60X60 cm access box to be provided with proper secured cover and clear mark identification. To provide a proper fire stooping in all open shaft considering the flexibility of adding and removing cables in the future. The BBTCS to be sized based on cables connectivity (number and size), using a 60% fulfillment in each containment. Cable tray is highly recommended to be used as BBTS, other options to be avoided such as conduit, cable basket. BBTCS must be properly bonded and connected to ground connection. BTTCS shaft should not be part of elevator shaft, power cables shaft or any source of Electromagnetic Interference (EMI). The minimum size of the cable tray to be 1X 300mm + 1X150mm (50mm depth). In Cases ER is away from blinding entry sleeves, a minimum of 300X50mm high level mounted GI cable tray interlink to be provided in between. 2.2 Horizontal Building Telecommunications Containment System (HBTCS): Based on the fact that HBTCS will be more difficult to access than the BBTCS after building is constructed, a special care during designing is required. Consequently the time required, cost, and risk of changing horizontal cable can be relatively high. The HBTCS are not limited to the containments of the cables; it should also include other related spaces like the junction box, access points. Whenever containment goes through a barrier; proper fire stopping materials to be used to close opening. HBTCS must locate away from any wet or dampness sources to maintain laid cables performance. HBTCS must be properly bonded and connected to ground connection. Mainly the design of HBTCS and how to size it depend on:

The quantity and size of cables that HBTCS will contain. Considering extra space for Future expansion, practically the HBTCS fulfillment should not

exceed 60% the balance space can be used for the future expansion purposes. The HBTCS has to have level of flexibility and accessibility to accommodate future maintenance or possible changes.



The HBTCS has to have a clear mark and location indication so it can be located easily by Smartworld staff. The HBTCS has to be designed in a way that maintains max 90m distance between the work area telecommunication outlet and TR. 90 degree bends to be avoided and whenever there is route diversion; a junction box must be provided. The size of the junction box will be based on the size and number of the containment system linking to it, and it has to be approved by Smartworld during NOC design stage. Under HBRCS there are two main sections:

Telecommunications Containment system within the work area. Telecommunications Containment system linking work areas with TRs.

2.2.1Telecommunications Containment system within the work area Based on type of the building below types of telecommunication horizontal containment can be use:

Conduit (normally in residential scenario). Cable Tray. Raised flooring. Flush Floor trucking.

Note: In shell and core design, the work area containment system will be tenant scope. Developer scope will be limited to extend the horizontal containment system up to proposed tenant space. Star topology must be considered when designing Telecommunications containment system, when using conduit system looping between work areas is not an option. When design work area horizontal containment consider space for minimum three CAT6 UTP cables to each telecom outlet, although only two CAT6 UTP cables are required for each work area. In case of special requirements for a particular type of horizontal cabling media; then design should be based on data sheet provided. Normally work area horizontal conducting system will have lots of bends and diversions; it is highly recommended to use 40% and not exceed 60% fulfillment method when designing. Table below shows max number of CAT6 cables that can be fitted in one conduit section.

Conduit Size Inside diameter (mm) No of 6.3 mm UTP cables

/ 21mm 19.30 4 1 / 27mm 25.40 6 1 / 35mm 34.03 10 1 /41mm 39.88 15

Table 04 (Conduit Size) Provide a physical separation between Telecommunication horizontal containment and power cables or any source of EMI. Pull box should be provided when:

Conduits section contains more than two 90-degree bends. Having more than 30.5m continuous section. Having a reverse bend.



Pull boxes shall be safely accessible. Pull boxes shall be straight through and shall not be used for direct bends. Conduits shall have continuous pull strings end-to-end. For apartment, to consider an intermediate flush mounted junction box between all horizontal conduits and TR links. Flush mounted junction box must be 30cmX 20cm X15cm near apartment entry at the highest possible level (minimum 1200mm) or above false ceiling with removable cover, which should have a 32mm opening covered for future use. Fig.05 (Apartment junction box)

Fig.05 (Apartment junction box) 2.2.2 Telecommunications Containment system linking work areas with TRs.

This type of telecommunications containment has to be designed carefully since it will run in common areas like internal aisles and in parallel with lots of other containment services. Regardless of type of building; when size containment system consider max 60% fulfillment, to allow any future requirements. A proper safely access 60cmX60cm to the containment mounted in the high level above false ceiling has to be provided specially in route diversion areas and every 15m for straight sections. Provide a physical separation between Telecommunications horizontal containment and power cables or any source of EMI. Some cases containment system will run directly from telecom outlet in the work areas up to TR, in such cases run should not exceed 50m if using conduit system. High level GI cable tray is highly recommended to be used in this section of Telecommunications containment system. Telecommunications containment system should enter from one of TR corners to allow for proper rack positioning and easy linking with TR inner containment system.


Structured Cabling System Page 16 of 29 23-Jun-08

3. Structured Cabling System (SCS) This section will cover the internal telecommunications cabling system within buildings, based on best practices and industry standards to provide SCS which will sustain future technology development. SCS is the developer responsibility to design and build as per Smartworld requirements and hand it over to Smartworld. Smartworld will be the only authority to control the SCS after handing over. Smartworld initial approval is must prior of any modifications by adding, changing or moving any portion of SCS. One approved brand to be used within the same building for all SCS sections. Handing over documents has to include but not limited to:

Detailed SCS testing results. Detailed As built drawings. SCS manufacture warranty certificate. Installer 2 years warranty certificate.

The structure Cabling System shall Support:

Analog and digital voice applications, data, video, and local area networks (LAN). Building automation systems. Other building signaling system.

Flexibility, future changes, simplicity, and easy maintenance are the main factors which should be considered when designing the SCS. Each part of the structure cabling system has to be properly labeled; refer to section 4. Within any building, SCS contains two basic parts:

Horizontal Cabling System. Backbone distribution system.

Telecommunications spaces are to facilitate SCS termination, cross connection and interlinking between horizontal cabling system and backbone distribution system in addition to house active equipments. To register and add to the approved list a SCS manufacture or installer, an application has to be filled and provide all required information and samples. Please refer to NOC process documents.



3.1 Horizontal Cabling System The Horizontal cabling system is part of building SCS to extend the connectivity from telecommunications outlet at work area till patch panel located in the TRs directly or via intermediate connections. When designing horizontal cabling system; distance between the farthest Work Area outlets and TR via containment system should not exceed 90m. The horizontal cabling system includes:

Work Area Telecommunications outlets 4-pair RJ45 connector and faceplates. Horizontal cables. Patch panels at TP, TE, TR, and MTR. Patch Cords. Racks to house SCS Patch Panels.

3.1.1 Work Area: Work Area is a space dedicated to work and interacting with telecommunications equipment, and it has to be designed in a way facilitating accessibility to all telecommunications services available within building. Two 4-pair RJ45 CAT6 or beyond to be considered for each work area, it can be fixed in floor box or mounted in the wall near electrical outlets (300mm) at the same height. When designing; consider 10sqm for each work area at commercial scenario. In case of shell and core; same calculations should be applied when designing the TP. It is highly recommended to consider two dual 4-pair RJ45 CAT6 or beyond placed in two different walls in each room for residential and villas scenarios. All terminations for the horizontal cables have to follow 568B assignment, following the EIA/TIA 568-B standard.

Fig.06 (UTP CAT6 T568B termination method)



3.1.2 Horizontal Cables

Unshielded Twisted Pair (UTP) 4-pair CAT6 or beyond cables is highly recommended to be used. Horizontal cables must be installed in star topology. Looping, splices and joints are not acceptable. Horizontal cable must be installed applying best practices to avoid cable damage during cable laying. Fiber and multi pair cables will be required only in rare cases such as:

o Retail Areas When distance between retail area TP and TR more than 90m. 6-core OM3 MM fiber indoor cable and 10-pair CAT3 UTP multi pair copper

indoor cable to be provided. o Telecommunications rooms

When two or more telecommunication rooms located in the same floor. 12-core OM3 fiber and 12-core SM fiber indoor cables to be provided.

In order to accommodate future cable changes a 3m slack is recommended from the TRs side, slack to be stored in an extended loop. In residential scenario; a 600mm slack for each horizontal cable is required at the apartment entry box. Each cable to be labeled from both ends and inside the apartment junction box (J.B). Fig.07 (SCS Residential Scenario)

Fig.07 (SCS Residential Scenario) 3.1.2.1 Special requirements for Commercial buildings: For commercial scenario; horizontal cables will be divided to two portions:

Permanently horizontal cable from TR up to TP. Work Area horizontal cable from TP up to Work Area outlets.



When designing commercial building Horizontal cables consider: One UTP 4-pair CAT6 cable or beyond for each work Area for permanently horizontal

cable. Two UTP 4-pair CAT6 or beyond for each outlet within the work area.

Note: For Shell and core scenario the work Area horizontal cables will be part of tenant scope of work. Fig.08 (Horizontal SCS for shell and core buildings)

Fig.08 (Horizontal SCS for shell and core buildings)



3.1.3 Patch Panel Patch panel is the only acceptable hardware where horizontal cable can be terminated at the TP, TE, TR and MTR. Patch panel connectors should match CAT6 or beyond ANSI/TIA/EIA standards, to maintain the CAT6 or beyond channel performance. Modular RJ45 CAT6 or beyond patch panel is recommended when number of UTP cable terminations less than 48. Insertion Displacement Connector (IDC) CAT6 or beyond patch panel is recommended in the TR and MTR especially when total number of UTP cable terminations is more than 48. Fiber wall mount patch panel to be considered for fiber termination with LC interface. Never use the same Fiber patch panel to terminate SM and MM fiber optic cables. Patch Panel has to be fixed in proper way inside the SCS cabinet with vertical and horizontal cable organizer. Designer to consider:

One 3m RJ45-RJ45 CAT6 or beyond equipment patch cord for each work area in commercial scenario and for each room in residential and villas scenario.

One 1m CAT6 or beyond 4-pair patch cord for each work area, interface to be decided based on TP patch panel interface in commercial scenario.

One 2m CAT6 or beyond 4-pair patch cord for each terminated port in the patch panel within MTR, TR and TE.

One 3m fiber patch cord LC-LC SM for each terminated port in the SM patch panel. One 3m fiber patch cord LC-LC OM3 MM for each terminated port in the MM patch panel.

Note: in the Commercial shell and core design only TP patch cords to be considered, work area patch cords will be tenant scope.

3.2 Backbone distribution system Backbone distribution system is part of SCS that provides cable connectivity between MTR, TR, TE in several floors and TEF. The backbone distribution system includes:

Smartworld outside cable connection. Vertical backbone cables. Patch panels at TTP, TE, TR, and MTR. Patch Cords. Racks to house SCS Patch Panels.

3.2.1 Smartworld outside cable connection: In order to extend Telecommunications services to any buildings within DWC city, building has to be connected with Smartworld telecommunications network. Prior to building completion, and when TEF ready from Smartworld perspective, Smartworld team will extend and terminate the outside cables within reserved space inside rack. Supply and install of the outside cables with all required termination accessories will be Smartworld responsibility.



3.2.2 Vertical backbone cables When designing SCS; consider a 12-core SM and 12-core OM3 MM fiber from MTR to each TR and TE. Vertical cables have to be laid in proper way in the riser with one layer of cables, and to be dressed carefully with one cable tie minimum every 300mm. Each cable has to be labeled properly from both sides. Refer to section 4 label system 3m slack is highly recommended at MTR side, TRs side and TEs side. Slack to be stored in an extended loop minimum bend radius of 10 times the cables outside diameter. Never loop cables between TRs or TEs, each TR or TE to link directly with MTR. Splice, joint or intermediate termination are not acceptable, all backbone cable links have to be straight. Each TR to have one link, although in some critical buildings a stand by or redundant link might be required, this to be decided at the design NOC stage Termination rack layout and location with MTRs, TRs, and TEs to be decided at the design NOC stage. 3.2.3 Patch panels and Patch Cord High density patch panel with LC SM and MM connectors to be considered at MTR for vertical backbone cables terminations at high level of the rack with proper cable organizer. Exact location of each fiber patch panel to be decided at SCS design NOC stage. Proper label to be used to identify patch panel/ports. Refer to section 4 label system. Designer to consider:

3 number of 3m SM duplex LC-SC patch cords for each TRs and TEs. 3 number of 2m SM duplex LC-SC patch cords for each TRs and TEs. 3 number of 3m MM duplex LC-SC patch cords for each TRs and TEs. 3 number of 2m MM duplex LC-SC patch cords for each TRs and TEs.

For SCS overall design principle figure 09 shows Commercial and residential building structured cabling system



Fig.09A (SCS for Commercial Building)



Fig.09B (SCS for Residential Building)


Telecommunications Environments Page 24 of 29 23-Jun-08

4. Telecommunications supporting and environmental systems 4.1 Raised Flooring System

Raised flooring system to be provided in all MTR regardless of the building type. Raised flooring system might be required in TR and to be decided at design NOC stage. Refer to section 1 TR.

Fig.10 (Raised Floor System) Height of Raised Flooring System has to be minimum 300mm from ground finished level,

and to maintain 3m room height clearance from raised flooring finish.

Tile size must be 60cm X 60cm. The tile surface must be anti-static with a conductivity resistance from the slab surface to be in the range of 1.5x105 to 2.0x1010 Ohms.

The tile must be fire resistant, with calcium sulphate type coating.

Raised Flooring System minimum uniform load must be at least 4.8 kPa and concentrated

load bearing capacity must be at least 8.8 kN.

Raised flooring Pedestals have to be fixed properly and each pedestal must be grounded.

Raised flooring stingers to be provided for Pedestals stability and support. Never consider stringer as bonding between pedestals and earthling bar.

Based on the telecommunications room total number of racks; cut tiles to be provided

considering two extra cut tiles per room.

30cm X 30cm cut to be from the middle of one tile sides, tile cut to be casketed with proper rubber materials to avoid sharp edges. Fig.11 (tile cut details)



Fig.11 (Tile cut details)

To provide one tile lifter per telecommunications room. Tile lifter to be hanged near room entrance.

4.2 HVAC System

Main Telecommunications Room MTR and Telecommunications Rooms TR must have continuous and dedicated HVAC system to maintain the room temperature range 21 Celsius 3 Celsius and Humidity range 30% to 50% relative humidity.

For MRT; the air conditioning system should have a redundant system which will startup

automatically if the main system is down or the room temperature is more than 24 Celsius. If building has redundant air conditioning system, then it is highly recommended to extend it

to TR. For AC sizing 1KW per square meter to be considered for MTR and 0.5KW per square

meter to be considered for TR.

Maintain the positive pressure with minimum one air change per hour.

Air conditioning controller with digital temperature display screen must be provided in each MTR and TR.

4.3 Firefighting System

Main telecommunications Room should have a fire protection system. A ceiling mounted fire dry powder extinguisher with another portable fire dry powder extinguisher mounted near the room entrance should be considered in the design.

Firefighting system must integrate with the building management system. Any opening within the room space has to be sealed and closed with a proper fire stopping

material voiding rodent entry to the room and preventing fire from extending in or out.



4.4 Power System

A 6.3mm thick X 100mm wide X minimum 400mm length clean earth bar to be installed

300mm above the raised floor in accessible area with good impedance less than 5. Fig.12 (Earth bar sample)

Fig.12 (Earth Bar sample)

At Telecommunications Room earth bar length can be 300mm. All equipment and containment within MTR, TR must be properly bonded and connected to

ground connection. Each rack within the MTR to have a one twin AC 1-phase 220V 13A and two AC single

phase 220V 16A industrial power 4 pin each from different circuit breaker. All power sockets to be fed from UPS panel. Two twin power socket AC 1-phase 220V 13A to be installed in two different walls in

1400mm height for operational functions (e.g. drilling machine, fiber splice machine). 4.5 Lighting System

Lighting layout to be coordinated with room layout to insure light fixture is not obstructed. To consider a minimum equivalent of 500 lux per m2 within MTR. At least 25% of the lights

to be linked with building emergency power (if available). Power feeding the lighting system should not come from the Telecommunications DB. To provide an emergency exit light within MTR and TR that works automatically in case of

power failure with minimum 30 minutes backup time.



4.6 Uninterruptible power system (UPS)

Supply and Install UPS is developer scope of work.

It is the developer responsibility to provide an UPS panel within MTR and TR room. Size and other details to be agreed in the design NOC stage.

Each rack power socket must feed from UPS Panel located within MTR and TRs.

Electrical load to be calculated for all telecommunications rooms, considering the power

consumption as 3KW per rack.

Design should consider whenever possible a central UPS in separate location to feed MTR and all TRs.

UPS to be dual fed by building emergency generator and DEWA, incase building has an

emergency generator.

Central Telecommunications UPS is highly recommended to serve MTR and TRs in all floors. Any concerns regarding UPS design must be discussed and agreed during NOC designing stage.

UPS to be fed from DEWA power supply and building generator if available.

4.7 Labeling System

Each and every telecommunications infrastructure element must be labeled properly. Telecommunications system labeling must be:

o Unique, to avoid any confusion. o Permanent and to be strong enough to be sustained within building life time. o Reflected on the As Built drawings.

The following infrastructure and equipment components should be labeled:

o Telecommunications spaces o Telecommunications pathways o Telecommunications cabinets. o Telecommunications cables o Power and Grounding system

Indication sign must be provided for telecommunication systems or equipments hidden by

false ceiling or any other systems. Identification of cabling pathways and cabling at both ends and whenever accessible.

Locate the markings so that they are: o Clearly visible after installation. o Easily distinguishable from any markings that appear on individual components.

Label scheme should indicate both ends locations at patch panels and faceplates. Label scheme must be the same from both ends.

Final liable scheme to be approved at NOC designing stage.


Bulk Services Page 28 of 29 23-Jun-08

5. Bulk Services

In some cases; when owner decides to mange his telecommunications services within his premises, Smartworld will provide customer with required telecommunications package.

Bulk services must be limited to customer internal telecommunications connectivity and bulk

services can not be shared between different companies even if they are sharing space. Only hospitals, hotels, furnished apartments, schools, education campus and buildings with

one single company user are eligible for the bulk services. The demarcation point in the bulk services scenario will be Smartworld MTR. It is developer

responsibility to extend the telecommunications containment system and cabling to link between Smartworld MTR and building telecommunications room.

Based on the type of the required services Smartworld MTR can be a TE. Details and

requirements to be finalized on the design NOC stage.

It will be the developer responsibility for the internal infrastructure within the building; however it is highly recommended to follow the international infrastructure design guidelines for better telecommunications services.


GSM Introduction Page 29 of 29 23-Jun-08

GSM Infrastructure Guideline GSM carriers to provide the final updated and TRA approved documents, which will be inserted to next version of Smartworld Telecommunications Infrastructure Guideline.

Documents

Smartworld TelecommunicationsInfrastructure Guideline 062008