Telecom infrastructure standards for buildings
Telecom infrastructure standards for buildings
A // Building Infrastructure Guideline v.5 Copyright du Issue December 2013 Building Infrastructure Guideline v.5 Telecom infrastructure standards for buildings
1 B // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Content Introduction 02 Telecommunication spaces 0٦ General specifications 08 Safety and other considerations 09 Temperature and humidity 09 Main telecom room 09 Clustered buildings 10 Mobile Service Room 10 Floor telecom closets 11 Rooftop mobile service room 11 Home consolidation cabinets 11 Office consolidation cabinets 12 Electro-mechanical 12 Mobile service room and rooftop 13 Pathway 14 General specifications 16 Vertical containment 16 Horizontal containment 17 Cables 18 General specifications 19 Fibre optic cables 19 CAT 6 copper cables 20 Administration and Labelling scheme 21 Bulk service application 22 Other special requirements 24 Entry ducts 24 Appendices 26 Layout & labellings 28 Tables 69 Location Map 75
3 2 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Introduction We are pleased to issue the updated Telecommunications Infrastructure Standards for Buildings v.5. The new design guidelines in this document are based on our prior experience of offering quality telecommunications services to our consumer and enterprise customers across UAE. The purpose of this document is to: • Introduce the new design guidelines for fibre infrastructure to enable property developers, consultants, and contractor to deliver high-quality, future- proof telecommunications and multimedia services to their tenants.
• Provide a guide for consultants, contractors, and engineers related to the ‘No Objection Certificate’ (Building NOC) process that includes design and construction drawing review and Structure Cabling Material data sheets review, with samples checking and site inspections required during implementation. • Meet the growing demand for improved communications at work, at home, in business, and in public services. We advise our clients to use qualified and certified professionals in all aspects of the application and implementation of these design guidelines during building construction stages.
Developers are encouraged to engage with us in the early stages so that any process and/or design issues may be resolved.
If property developers or tenants have special requirements that may not be covered by these guidelines, it’s necessary to involve our design teams at an early stage of development planning, to enable seamless delivery of premium telecommunications services at launch. We look forward to feedback from developers as it helps us understand your issues and incorporate valid suggestions in future designs. For more information on obtaining building NOCs or any design-related queries, please contact us at any of the below channels: • Dubai and Northern Emirates NOC help desk: +971 4 391 5018 • Abu Dhabi, Al Ain and Western regions NOC help desk: +971 2 234 4401 • General inquiries and technical support: 800-dunoc • Email: firstname.lastname@example.org • Website: www.du.ae Thank you, du
5 4 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 This document covers the following properties types: • Single villa and villa complexes • Residential towers and groups of residential towers • Commercial towers and groups of commercial towers • Government buildings • Mosque • Shopping malls • Groups of shops and retail outlets • Hospitals, hotels, schools, universities and other bulk service applications • Warehouses, sheds, etc. The document is structured to cover all aspects of infrastructure for: • Telecommunication spaces • Electro-mechanical • Pathways • Cables and its related accessories • Bulk services • Duct entry • Labelling scheme All telecom spaces, pathways, ducts and cabling system specified in this document are designed to meet the requirements of du to provide high-quality, future-proof services to the Customers and should be used for telecommunication services.
The contents of this document are the minimum requirements of du for the new buildings and subject to revision without notice due to continued progress in methodology, design and manufacturing and for the purpose of regulatory compliance.
7 6 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Telecommunication spaces
9 8 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Safety and other considerations All telecom rooms must comply with municipality and national authority standards and regulations, such as those issued by civil defence and utility companies. Notwithstanding this, it is expected that the following will be provided: • All telecom spaces should be fitted with smoke detectors connected to the building management system.
• All telecom spaces should be fitted with emergency lighting.
• All containment openings to telecom spaces must be sealed with a regulation fire retardant material. • All doors to telecom rooms must be of solid wood core or steel construction, fire retardant with a minimum rating of 2 hours. • All doors to telecom rooms must be outward opening with an automatic door closer system fitted on the hinged edge. • All doors to telecom rooms must be labelled. • The room must be free from contaminants and pollutants. • All telecom rooms should have basic firefighting provision of handheld CO2 cylinder type extinguishers. • If the building developer has any concerns over safety, especially fire protection and suppression systems, this should be raised with du at the NOC stage.
Temperature and humidity All telecom rooms must be maintained at 20°C ± 3°C and the relative humidity at 50% ± 10%. However, floor telecom closets can be maintained within 20°C to 30°C temperature range. The Main Telecom Room (MTR) A main telecom room must be provided on the ground floor for all multi-storey buildings. This room will be used for the termination of telecom fibre optic cables and to house telecom equipment, if needed, now or in the future. Generally, the MTR can be shared by both du Fixed and Mobile services. If a mobile service room is required in the building (more than G+10) the first mobile service landing room can be shared with the MTR.
The minimum combined room dimension should be 4m x 4m x 3m (WxDxH) and maybe increased depending on the functions and features of the building. The room specifications are detailed in Appendix_1_Figure 5 to 9. If the architectural design limits the room sharing, then two dedicated rooms with minimum sizes of 3m x 3m x 3m (WXDXH) each must be provided.
The room specifications are detailed in Table-1, Table-2, and Appendix_1_Figure-1 to 3 and 18. Refer to Appendix_1_Figure-14 to 16 for Rack elevation layouts details. General specifications A number of telecom rooms will be required in a building depending on its characteristics. The following room types are required and the details of these rooms shown below: • Main telecom room • Mobile service room • Rooftop mobile service room • Floor telecom closet In multi-storey buildings the telecom rooms should be vertically aligned and linked by a shared containment system. This containment system must not reduce the minimum requested space.
All telecom rooms must be dedicated for the use of du. The rooms must be easily accessible to du personnel 24 hours a day and secured from unauthorised entry.
Telecom rooms must not be in close proximity to any sources of the following: • Heat • Moisture • Corrosive atmospheric or environmental conditions • High voltages • Radio frequency interference (RFI) • Electro-magnetic interference (EMI) The rooms must not be directly beneath or next to wet areas such as: • Showers • Washrooms • Swimming pools • Garbage area The rooms should be clean and free from any items not directly related to the specifications in this document such as: • Non-du equipment • Utility pipes • Sprinkler systems • Windows All telecom spaces and pathways must be pest controlled using best available practices.
It should be noted that rodents often gnaw cables resulting in damage and the potential for service disruption. Hence, special attention should be given to preventing rodents from entering telecom spaces and pathways. This could involve the installation of covers to cable trays; if this is the case these covers must be removable to allow for the installation of additional cables.
The walls, floor and ceiling should be painted and treated with anti-dust and anti- static coating to minimise dust and static electricity. Walls and ceilings shall receive primer and finish coat of light colour paint. In order to move equipment into and out of telecom rooms, all entrances must not be smaller than 900mm x 2100mm (WxH).
11 10 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Floor Telecom Closet (FTC) A floor telecom closet must be provided on each floor of all multi-storey buildings. The floor telecom closet is required to provide a flexible point for the installation, pulling and maintenance of telecom cables.
FTC must have a minimum dimension of 2m x 1m x 3m (WXDXH). The floor telecom closet should be provided with two outward opening doors with a minimum total opening of 1500mm x 2100mm (WxH). The door should be labelled (Floor Telecom Closet خدمات حجرة الطابقية االتصاالت ) In the case of a multi-storey villas, townhouses, G+1 warehouses or small retail shops, floor distribution boxes will be required with a minimum size of 300mm x 300mm x 150 mm (WxHxD), as an alternative to replace FTC. In high rise buildings which usually exceed 30 floors, proper planning and consideration must be given to the FTC space and dimension, which might be increased.
It is highly advisable to seek du advice and pay close attention during NOC stage to understand the concept of high rise building infrastructure design. Refer to Table 3 and 4 and Appendix_1_Figure-4 for the complete detailed layouts of FTC. Rooftop mobile service room (up to G+10) Rooftop mobile service rooms must be provided on the roof of all multi-tenant buildings up to G+10 and access must be provided to the building riser system. The door dimension must be 900mm x 2100mm (WxH) and opening outwards and should be labelled ‘Roof Telecom Room’ السطح على المتحرك الهاتف خدمات غرفة.
The rooftop mobile room must have a minimum distributed floor load rating of 10 kN/m2.
An opening must be provided with a dimension of 600mm x 400mm (WxH), 500mm below the room ceiling in walls facing the building’s rooftop area. Space must be reserved on the rooftop of the building for the installation of mobile service antennas. This will vary from building to building, but will typically be at the corners of the building or on any raised structure on the rooftop. The exact details will be defined during the NOC stage. Refer to Appendix _1_Figure-10 for the complete detailed room layouts for mobile service rooms.
Home consolidation cabinets The home consolidation cabinet is a space to house du’s network termination equipment.
It also serves as the distribution point for all local wiring. A consolidation cabinet should be provided in each home. This should be a telecom cabinet with the following specifications: • Minimum internal dimensions 600mm x 600mm x 15٠mm (HxWxD) for 24 or less CAT6 cables termination per unit • Minimum internal dimensions 600mm x 600mm x 300mm (HxWxD) for more than 24 CAT6 cables termination per unit • Wall mount or flushed mount installation at 1.2m high measured from the finished floor level up to the edge of the cabinet.
• Fitted with RJ45 UTP patch panel and cable management. • Fitted with 2-core fibre terminal box. • 2 nos. 13A twin sockets fed from the essential power supply with dedicated 20A circuit breaker. The 3m clearance height specified is the minimum finished clearance after taking into account allowances for raised floors (if used), overhead cable trays and any other obstructions such as lighting fixtures and beams. In areas where overhead trays are used, a minimum headroom access of 300mm is required above the tray. Depending on the telecom room usage, a ‘raised floor’ might be required inside the MTR having active equipment, particularly commercial or mixed use buildings.
A minimum of 300mm height above the base floor of the room should be provided. Tile cutting details are specified in Appendix_1_Figure-25. In other cases involving residential buildings, raised floor is not mandatory, and will be further advised during the NOC stage.
The floor level of the room must be constructed at the same level as the outside access or corridor. If this cannot be met, then a suitable ramped entry with an anti-slip surface must be provided. A threshold step of 100mm must also be provided inside the room under the raised floor to prevent any ingress of water from outside the room. The door of the main telecom room must have outward opening with size not smaller than 900mm x 2100mm (WxH). The door should be labelled ‘Main Telecom Room’ “لالتصاالت الرئيسية الغرفة All cables in the main telecom room must be properly routed to the desired destinations.
For this purpose, an adequately sized cable tray system must be installed to maintain the connectivity as described in Appendix_1_Figure-20 to 21. Clustered buildings Group of towers If a project consists of a cluster of multi- tenant buildings, then all the requirements of a single tower still applies. One of the buildings will be selected as the location for the main telecom room, which usually stands in the centre of the cluster or often times closest to the main telecom duct entry points. This would require the cluster of buildings to be linked to the designated main telecom room via multicore single mode fibre cables.
The details of this arrangement should be discussed with du during the NOC stage. Cabling concept is described in the clustered building schematic diagram in Appendix_1_ Figure-22.
The Mobile Service Room (more than G+10) As mentioned in the MTR section, du Fixed and Mobile Services can be combined in one room. The first mobile service room can be shared with the MTR to serve the first 10 floors of the building. If sharing is not feasible, a dedicated 3m x3m x 3m (WXDXH) mobile service room can also be provided. Accordingly, the mobile service rooms must be provided for every 10 floors thereafter. The locations of the mobile service rooms must be close to the floor telecom closet (FTC). The mobile service rooms must have a minimum distributed floor load rating of 10 kN/m2.
The door dimension must be 900mm x 2100mm (WxH) and opening outwards.
The doors should be labelled ‘Mobile Service Room’ المتحرك الهاتف خدمات غرفة. Refer to the Table-2 and Appendix_1_ Figure-10.
13 12 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 • Adequate ventilation with ambient temperature maintained at 20°C – 30°C. • Adequate safe working space around the location with ambient lighting. • Not close to sources of water or heat and any electrical distribution or bus bars. • Labelled with villa or flat number. A layout of a typical home consolidation cabinet is provided in Appendix_1_Figure-11 to 13 Office consolidation cabinets Commercial predefined offices, warehouses, sheds, shops.
The office consolidation cabinet is a space to house du’s network termination equipment. It also serves as the distribution point for all the local wiring. A consolidation cabinet must be provided in each business area. This should be a telecom cabinet with the following minimum specifications: • Minimum internal dimensions 600mm x 600mm x 300mm (HxWxD) • Wall mount or flushed mount installation at 1.2m high measured from the finished floor level up to the bottom edge of the cabinet.
• Fitted with RJ45 UTP patch panel and cable management. • Fitted with 2-core fibre terminal box. • Fitted with dual 13A switched socket power outlet fed from a dedicated circuit breaker on the domestic supply. • Sufficient cable entries to accommodate the incoming fibre optic and UTP cables. • Located in an accessible area close to the entrance; avoiding areas such as kitchen, laundry room or bedroom. • Adequate ventilation with ambient temperature maintained at 20°C – 30°C. • Adequate safe working space around the location with ambient lighting. • Not close to sources of water or heat and any electrical distribution or bus bars.
• Labelled with office/retail/building unit number.
A layout of a typical office consolidation cabinet is provided in Appendix_1_ Figure-12 to 13 Commercial shell and core In case of shell and core development (open space office floor with no pre- defined offices), the building’s contractor should install one indoor wall mount mini ODF inside the FTC. The size of the mini ODF will depend on the number of fibre cores required based on the floor area served. In addition, free wall space inside the floor telecom closet must be reserved for future offices terminations. Refer to the FTC layout as shown in Appendix_1_ Figure-4 Mini ODF specifications are as follows: • Lockable side panels.
• Lockable front door. • Sufficient cable entries to accommodate the incoming fibre optic cables.
• Labelled with floor number. • Labelled ports. Electro-Mechanical Main Telecom Room (MTR) For commercial and mixed used buildings, the following requirements need to be provided: • SMDB inside the room fed from power supply (with generator backup) for fixed equipment. Refer to the single line diagram in Appendix_1_Figure_27 • 2x32A TP isolators to be provided in the Main Telecom Room - Refer to the SLD in Appendix_1_Figure_27 • 2 nos. 13A twin sockets fed from the essential power supply with dedicated 20A circuit breaker.
• AC and DC earth bars connected to the dedicated earth pits with resistance less than 1ohm.
• Dedicated A/C system (ducted split FCU) with duty and standby units with proper interlocking, to maintain the room temp. at 20+/-3°C. • Heat dissipation can be considered at 300 Watts/sq.mtr.+3kW per rack. • Room should be provided with adequate lighting and comply with the fire and safety requirements like smoke detector, fire alarm, emergency light etc. as per local authority standards. Any water sprinklers to be avoided. • 2 nos. handheld CO2 cylinder extinguishers to be provided inside the room.
• Add 1x63A TP isolator fed with dedicated feeder from essential power supply (with generator backup) for GSM equipment – if MTR is shared between du Fixed and Mobile services. • Heat dissipation to be Increased by 8kW for GSM equipment- if MTR is shared between du Fixed and Mobile services. For residential buildings, the following requirements need to be provided: • 2 nos. 13A twin sockets fed from the essential power supply with dedicated 20A circuit breaker. • One earth bar connected to the telecom earth pit with resistance less than 1ohm. • Room must be provided with adequate lighting.
• Room should be provided with air conditioning system to maintain the room temp. at 20+/-3٠ C • Room should comply with the fire and safety requirements like smoke detector, fire alarm, emergency light etc. as per local authority standards. Any water sprinklers to be avoided. • 2 nos. handheld CO2 cylinder extinguishers to be provided inside the room. • Add 1x63A TP isolator fed with dedicated feeder from essential power supply (with generator back up) for GSM equipment – if MTR is shared between du fixed and Mobile services. • Heat dissipation of 8kW for GSM equipment- if MTR is shared between du Fixed and mobile services.
Mobile Service Room and Rooftop Mobile Service Rooms For all mobile service rooms and rooftop mobile service room, all requirements mentioned in Passive MTR must be followed including the 1x63A TP isolator and the heat dissipation requirement. Further advice will be given during the NOC stage for the rooftop mobile service room design. Floor Telecom Closet (FTC) • Adequate lighting and 1x13A twin socket fed from the normal building supply with dedicated 20A circuit breaker. • Room should comply with the fire and safety requirements like smoke detector, fire alarm, emergency light etc. as per local authority standards.
Any water sprinklers to be avoided. • 1x handheld CO2 cylinder extinguisher. Refer to Appendix_1_Figure-10 for the complete detailed room layouts.
17 16 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 General specifications The following requirements must be applied to all containment systems: • The containment system must be designed so that installed cables do not exceed the minimum specified bend radius. • All metal containment parts must be free from sharp edges and earth bonded. • Telecom riser openings must be sealed with a suitable fire retardant material. • Cable trays must be easily accessible in common areas to facilitate any future provision of additional cables.
• Any cable trays that are in areas accessible to the public and less than 4.8m above the floor must be covered. • Containment systems must not run through areas exposed to excessive heat, moisture, corrosive atmospheric or environmental conditions, high voltages, radio frequency interference (RFI) or electro-magnetic interference (EMI).
• For all containment systems a minimum separation must be maintained from sources of electromagnetic interference. • The building developer may want to consider redundant containment systems, particularly in commercial or prestigious developments. du must be contacted at the design stage to discuss any such requirements. Vertical Containment Multi-storey/multi-tenant buildings Risers must be provided in multi-storey/ multi-tenant buildings to allow the installation of telecom cables from the main telecom room to the floor telecom closets, mobile service rooms and rooftop mobile service rooms.
Hot-Dip Galvanized (HDG) slotted steel cable trays must be provided in the risers to carry the telecom cables between all the telecom rooms. It is recommended that the main telecom room and floor telecom closets should be designed so that they are vertically aligned within the building.
Two cable trays, with the following minimum dimensions are recommended: • One of 500mm x 100mm (WxH) with Heavy Duty Return Flange (HDRF) for fibre optic cables. • One of 300mm x 50mm (WxH) with Heavy Duty Return Flange (HDRF) for GSM cables (covering all floors from last basement till roof). If it is not possible to provide all of the cable trays running vertically then horizontal trays of the same size should be provided. Note: above cable trays requirements to be finalised during NOC stage. Within homes In case of multi-floor apartments/villas, the UTP cables between the floors must run through 50mm diameter PVC conduits via junction/pull boxes located on each floor.
The junction/pull boxes must have a minimum dimension of 300mm x 300mm x 150mm (WxHxD). The slab opening for these conduits must be in a suitable and accessible location in every floor. It is recommended that all vertical conduit runs be aligned to ease the installation of cables.
Horizontal Containment Multi-storey/multi-tenant buildings The horizontal containment for routing cables from the floor telecom closets to consolidation points on the served floor can use a number of systems (cable trays, conduits, etc.). The solution will depend on the characteristics of the building. Conduits must only be used when the consolidation point locations are permanent, the cable density is low and the flexibility to modify the routing is not required. Specification for the size of this containment is given in Appendix_1_Figure-20 to 21 Note: Intermediate PVC junction/pull boxes with minimum size of 300mm x 300mm x 150mm (HxWxD) must be provided on individual runs that exceed 30m.
PVC junction/pull boxes must also be provided where an individual conduit run has a sharp change in direction. The cable tray minimum dimensions are described below: • One 200mm x 50mm (WxH) cable tray with Heavy Duty Return Flange (HDRF) as a main route from floor telecom closet to main corridors and then branches to each consolidation cabinet through cable trays of 50mm x 50mm (WxH).
Mobile service antennas Cable trays must be provided to route mobile service antenna cables from the floor telecom closets to all common corridors including all lift lobbies in all floors including podium and basement. One cable tray following minimum dimensions must be provided: • 150mm x 50mm (WxH) with Heavy Duty Return Flange (HDRF) For office/commercial buildings, the horizontal containments should be extended till inside the entrance of each office units. Within homes All UTP cables inside the home must run through PVC conduit with a minimum 25mm diameter from the home consolidation point to each dual outlet.
If more than one dual outlet is fed by a conduit then the size and quantity of the conduit may need to be increased. Intermediate PVC junction/pull boxes must be provided on individual runs that exceed 30m. PVC junction /pull boxes must also be provided where an individual conduit run has a sharp change in direction. Cluster of buildings – groups of towers Where a building consists of a group of towers (on a common shared podium) all of the requirements of a single tower still apply. In addition, cable trays must be provided linking the main telecom rooms of all towers, exact requirement to be finalised during NOC stage.
One cable tray with the following dimension must be provided: • 300 x 100 (WxH) with Heavy Duty Return Flanged (HDRF) These trays should be readily accessible in common areas to facilitate any future provision of additional cables. However, if these trays are in an area accessible to the public and are less than 4.8m above the floor then the trays should be covered. For more details, refer to Appendix_1_ Figure-22
19 18 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 General specifications Specifications of all the cables to be used must be submitted to du for approval during the NOC stage.
This must also include test reports showing that the performance of the cabling system meets defined requirements. Cable test must be performed using power metre and OTDR tests, whichever is applicable. Details for cable labelling are included in Appendix_2 Fibre Optic Cables The quantity of fibre optic cables that must be provided and installed from the main telecom room to the consolidation points or FTC depends on the characteristics of the building. Drop Fibre Cable • Indoor rated drop fibre • Individual pairs (2-core) • Single mode • Suitable for LC/APC connectors • Bend insensitive, ITU-T, G.657A1, and compliant with G.652D • Jacket made from halogen free and flame retardant material • Low Smoke Zero Halogen (LSZH) or Flame Retardant Polythene Sheath (FRP) Multicore Fibre Cable • Indoor rated • Single mode • Compliant with ITU-T, G.657A1 and G.652D • Jacket made from halogen free and flame retardant material • Low Smoke Zero Halogen (LSZH) or Flame Retardant Polythene Sheath (FRP) • Fibre optic colouring code shall be in accordance to EIA/TIA-598 For fibre cables that need to be installed or routed outside the building to serve guard houses or security rooms, or any other similar facilities, outdoor rated fibre cables must be used, with the specifications as mentioned below: OSP Fibre Cable • Outdoor rated • Single mode • Compliant with ITU-T G.652D • Loose tube inner construction or Ribbon type for high density cables • Fibre optic colouring code shall be in accordance to EIA/TIA-598 Fibre optic cable requirements – from main telecom room to consolidation points (direct fibre) 2 core (individual pair) fibre optic cables will be required from MTR up to each apartment, retail shop, and pre-defined office.
It is recommended to apply direct fibre installation up to G+30 only to maintain cable management inside the FTC and MTR.
The fibre cables must be provided from the main telecom room to each consolidation point and should be of continuous lengths free from joints, branches or patching. By default, all the fibre cables should pass through the FTC. The fibre cables should be labelled at both ends with a unique reference for the consolidation point served and the room or area of origin. Labelling details are included in Appendix_2 All fibre optic cables should be terminated inside the MTR and inside the unit CP cabinet. Refer to Appendix_1_figure-19 Cables
21 20 // Building Infrastructure Guideline v.5 // Building Infrastructure Guideline v.5 Fibre optic cable requirements – from MTR to FTC (multicore fibre) For high rise buildings exceeding G+30, a FTC must be selected for every 10 floors.
Multicore fibre cable must be installed in a mini ODF inside the FTC, where the number of fibre core will depend on the number of units in each served floor. 2 fibre cores per unit should be considered as the basic foundation of multicore fibre calculation. If there are unused fibre cores, these must be left un-terminated and coiled properly inside the mini ODF and the MTR ODF. Refer to Appendix_1_figure-26 Fibre optic cable requirements – from MTR to FTC (shell and core) For shell and core office development, one pair of fibre optic cable per 200sq m of leasable commercial area should be provided up to FTC of the same floor.
Depending on the building design and built up area, multicore fibre cables from 12 cores up to 288 cores may be required to be installed between the MTR and FTC to meet the cable quantity requirement. The fibre cables should be labelled at both ends with a unique reference for the floor served and the MTR. Labelling details are included in Appendix_2 All fibre optic cables should be terminated inside the MTR and in the FTC mini ODF cabinet. Refer to the FTC layout as shown in Appendix_1_Figure-4 Fibre optic cables – from MTR to all mobile service rooms 12 single mode fibre pair cables must be provided from the main telecom room cascaded to all mobile service rooms ending at the last mobile service room.
10m of spare fibre must be left neatly coiled.
Fibre optic cables – from MTR to rooftop mobile service room 12 single mode fibre pair cables must be provided from the main telecom room to the rooftop mobile service rooms. 10m of spare fibre must be left neatly coiled. CAT6 Copper Cables CAT 6 Copper cables – from consolidation points to tenant outlets To deliver services from the consolidation points to the building outlets, unshielded twisted pair (UTP) copper cables must be provided. The complete design of this service is the responsibility of the building developer. However, the following minimum requirements must be followed for the efficient and effective provision of services: • The cables must conform to a minimum of CAT 6 specification (Category 6, 100 Ohm, 4 pair 23 AWG as specified in ANSI/TIA/EIA 568-B.2 Addendum 1).
• The wiring must be in a‘star’topology fanning out from the consolidation point.
• Dual RJ45 outlets with spring load sliding shutters must be provided wherever service is required (all outlets should comply with the performance specifications as detailed in ANSI/TIA EIA 568-B.2 Addendum 6). • Each socket in the dual RJ45 outlet must be wired back to the consolidation point. • Outlets must not be cascaded or looped & there must be no splitting of cable pairs. • The maximum cable length from consolidation point to outlet must not exceed 90m. • At the consolidation point the cables should be terminated on an RJ45 patch panel and labelled with the socket and outlet served.
• In each outlet the cable must be terminated to maintain the twists in each pair up to within 5mm of the termination. • Proper strain relief should be provided at the terminated ends of the cable. • The components of the CAT 6 system must be from the same supplier or at least compatible to insure maximum performance. • Design should incorporate built-in flexibility to meet the growing needs of the occupants. • The CAT 6 cabling system must be tested using an appropriate field test instrument for compliance with ANSI TIA/EIA 568-B.2 Category 6 (or equivalent if a higher specification has been used) • Numbering and colouring of the pairs should be as defined in EIA/TIA 568B, SO 11801/EN50173 using the T568B option.
Administration and labelling scheme All the infrastructure components described in this document must be clearly and uniquely labelled. The label information must correspond with the description on the as-built drawings. The type of label must be suitable for the object being labelled and its environment. This is particularly important for cables and consolidation cabinets where a high quality printed self-laminating type must be used. For detail of the Labelling scheme refer to the Appendix_2