Networks New Australia Vol13 No.1 2006 Patch-by-Exception Data Centre Delivers Instant ROI In this issue I The New Era in Wireless LAN I Standards Update - 10G Ethernet Cabling I RiserGuide Fibre Cable Management System A NOTE FROM BOB FITZGERALD elcome to the new look ADC KRONE magazine You may have noticed the new name for this publication - New Networks We will continue to bring you all the great content you regularly received including the latest news and information on networks and cabling, along with technical articles, case studies and industry updates I hope you enjoy the new format I’d like to introduce John Dulin, our recently appointed Vice President of Sales for Asia Pacific John joins us from ADC headquarters in America, where he most recently lead the Latin America sales team He has spent time with ADC in Australia in recent years, in fact, John was part of the team which initiated the Optus build 15 years ago John’s article on page explains some of the changes we have recently made to our sales team, enabling us to better serve you, our customers The progress of FTTX trials and developments has been of great interest within the industry lately We recognise the importance of this and are actively participating in the Asia Pacific FTTH Council, with a recently commenced trial in Brisbane using an OmniReach™ FTTH cabinet We will update you on this once we have the results W We are pleased to announce ADC KRONE's involvement in the Ethernet Alliance, formed in January this year to promote IEEE 802 Ethernet Technologies See page ten for more information on this Our customers can expect a great amount of support in 2006, with our newly structured sales team now set up to best meet your needs In addition to that, you will continue to see the introduction of ADC KRONE products to the Australian market, expanding your solutions through a larger product range Sincerely Bob Fitzgerald VP Regional Director Asia Pacific Region CONTENTS ADC KRONE News Customer Stories Serving Our Customers Better Innovative Leadframe Jack Design Wins ATUG Award RiserGuide Fibre Cable Management System Ethernet’s Future Is Bright 10 Datacom NZ Enjoys Instant ROI With ADC KRONE’s PBE Solution Editor: Sarah Bishop Art Direction: Nora Collins Website: adckrone.com/au Technical Articles 11 13 Standards Update - 10 Gigabit Ethernet Cabling A New Era In Wireless LAN Copyright © 2006 ADC Communications (Australia) Pty Limited S NEW NETWORKS SERVING OUR CUSTOMERS BETTER John Dulin introduces the new sales structure for Australia and New Zealand along with recent appointments in his Asia Pacific team ate last year, we announced a new organisational structure for the Asia Pacific Sales Team The purpose of the restructure was to align our sales team with key customer groups in order to provide specialised support to each L We now have two distinct areas within the sales team - Enterprise Sales and Carrier Sales This alignment gives a higher level of expertise and an improved communication link for customers in each group Damien Rodgers has been appointed Sales Director, Enterprise Australia and New Zealand Damien brings a breadth of experience from his years with the company, being responsible for the New Zealand operation of ADC KRONE Within Australia, Damien will be supported by the existing Enterprise Sales Team, lead by both Ian McCully, National Sales Manager, Enterprise Channel Partners and Jon Vause, National Sales Manager, Corporate Accounts John Dulin, VP Sales, Asia Pacific Adelle Ward has been appointed Sales Director, Carrier Australia and New Zealand Having spent time working with the company in America, Adelle brings a great deal of product knowledge and experience in the Carrier market Adelle will be supported by the existing Carrier Sales Team and Engineers Tim Takala has been appointed Technical Director, Enterprise, Asia Pacific Tim has worked with the company both here and in the USA, bringing a wealth of technical knowledge across the full range of enterprise products for ADC KRONE Tim is developing a technical team whose prime focus will be supporting our customers across the region Dave Anderson has been appointed Sales Operations Director, Asia Pacific Dave will be primarily responsible for partner programs and sales support systems within the region These changes are designed to provide the best possible level of service to you, our customers It’s going to be an exciting year with the introduction of ADC KRONE’s fibre and wireless product ranges into the Australian market NEW NETWORKS S DATACOM NZ ENJOYS INSTANT ROI FRO PATCH-BY-EXCEPTION SOLUTION Datacom NZ’s installation of ADC KRONE’s Patch-by-Exception (PBE) solution generated an instant return on investment cknowledged as a leader in the NZ systems and outsourcing market, Datacom NZ (DNZ) is the largest information and communications technologies services firm in the country DNZ’s clients are high profile multinational companies and Government Departments, who utilise its five robust data centres located in Australia and New Zealand Uptime is key to DNZ’s business and that of its clients When the company’s Datacom Systems Limited Division decided to build a new data centre at its Auckland headquarters from scratch, it was imperative customers were provided with an improved infrastructure which continued to deliver security, reliability and, above all, the agility to deploy systems DNZ wanted to move away from its current system of patch panels sourced from a variety of vendors and alleviate the time-consuming difficulty of underfloor access to cables A project team consisting of Datacom personnel and Mark Leonard, Structured Cabling Solutions Limited (SCS), set the criteria of cost effectiveness, manageability, ease of maintenance and performance After reviewing tenders from three vendors, ADC KRONE’s Patch-ByException Solution was selected ADC KRONE NZ Northern Regional Manager, Peter Kaad worked closely with the DNZ project team A Peter Kaad, Northern Regional Manager, Auckland sales office Category Cross-connect Frame S to design an optimised data centre, which more than delivered the set criteria Since the data centre went live, DNZ has seen an immediate return on its investment It enjoys: I greater efficiency for the installer resulting in time saved in service visits; I increased staff productivity because moves, adds and changes to the network take moments instead of hours; I secured uptime for data centre customer network; I opportunity for more sales in data centre; I easy, cost-effective upgradeability to Gigabit Ethernet in the future; I a 20-year guarantee of the PBE solution components DNZ outsources the management of its cabling system to Mark Leonard and the team at SCS Mark is certified as both a Master Installer and a Network Designer RETURN ON INVESTMENT/TIME SAVED In Mark’s estimation, the PBE solution at this data centre has boosted his team’s efficiency by 250 per cent A visit that would have taken two hours, now only takes half an hour; a relocation move, add or change that would also have taken two hours can now be done in minutes In maintenance time alone, it has saved DNZ approximately $45,000 per year since the facility was completed As the data centre is a live facility, permission has to be sought to work on the system The window for entry for the maintenance team is set between 7pm and 7am to minimise any possible disruptions to service for DNZ’s customers The reason is that when an installer has to remove multiple rows of tiles to access a myriad of cables belonging to different customers housed under the floor of the data centre, there is always a chance infrastructure can be damaged and service disrupted It’s obviously better to conduct any work after business hours NEW NETWORKS FROM ADC KRONE’s ENSURED CONTINUITY OF SERVICE The new Auckland data centre can be accessed at any time of day with security of service ensured With the PBE solution, the whole data centre was hard wired and is pre-terminated on the Ultim8® disconnection modules on the data centre wall The installer then simply removes one floor tile outside the customer cabinet and terminates a series of Category cables to the appropriate rack and then connects the necessary jumper cable at the cross-connect frame to link the rack outlet to the correct switch port As each customer is allocated an individual cabinet, there is no chance of interrupting another client’s service So, new work does not impact existing customers and the time saved in maintenance is significant OPPORTUNITY FOR MORE SALES IN DATA CENTRE Data centre real estate is precious The compact PBE solution delivered the opportunity for the DNZ project team to design a data centre to maximise the number of customer cabinets able to be accommodated The Ultim8 disconnect modules are mounted on the wall rather than Rear view Category Cross-connect Frame taking valuable floor space; cables are contained within racks and cabinets for neat, vertical and horizontal cable management DNZ also has increased the environmental safety and security of the data centre Anti-static tiles are usually installed in these facilities to Continued next page Patch-by-Exception Ultim8® solution NEW NETWORKS S FL2000 FIBRE PANELS Continued from previous page The FL2000 range is ADC KRONE’s advanced fibre patching system It is available in multiple configurations and ideally suited to all enterprise and data centre applications The fibre panels are a flexible, modular and economical, designed for both 19 inch and 23 inch rack systems The panels are wall mountable and available with accessories to ensure compatibility with existing equipment FEATURES I Provides termination, splicing and storage capabilities for in-building cables, outside plant cables I Rack mount panels are hinged on one side, allowing full access to the rear of the front plate and the interior of the panel I The new FL2000 splice wheel allows easy roll-up of pigtail and buffer tube lengths and superior bend radius protection Under-floor cabling I ADC KRONE’s patented removable angled retainers allow easy access for single fibre maintenance I All FL2000 panels accommodate the modular FL2000 6-pak plug-ins 6-paks are available in all connector styles and can be ordered as needed I FL2000 systems accommodate the value-added plug-in modules, adding flexibility and functionality to the optical transport systems Splitters and wavelength division multiplexers reduce the electrical charges that can occur when working with live equipment DNZ has gone one step further and installed an anti-static, flame-retardant linoleum tile floor to minimise the chance of a workplace accident Another advantage is the PBE solution makes the data centre aesthetically more pleasing As the flagship of the DNZ facilities, existing and prospective customers often visit the site and are reassured by its neat and efficient appearance SUCCESS OF THE PROJECT Mark Leonard said: “I believe the success of this project was due to the fact that the client, the installer and the supplier were involved from day one This ensured the correct solution was delivered on time and within budget.” Datacom agreed with this observation and added: “Datacom New Zealand’s customers are impressed with the speed at which we can deliver their requirements We have never missed a deadline installing a network for our customers and this PBE solution ensures we never will We are extremely satisfied with the result” THE SOLUTION The estimated value of the project is $150,000, encompassing 960 outlets and 30 kilometres of cable It consists of a TrueNet® Patch-by-Exception solution comprising: I HighBand® Ultim8® disconnect modules I TrueNet Category cable I KM8 Category RJ45 outlets I S NEW NETWORKS INNOVATIVE LEADFRAME JACK DESIGN WINS ATUG AWARD ADC KRONE recently won the 2006 Australian Telecommunications Users Group (ATUG) Award for Innovation in Telecommunications his award recognises the innovation in development of ADC KRONE’s High Speed Category Leadframe Jack The ADC KRONE Leadframe Jack is an industry first, generating great interest within the cabling industry The connection system uses stamped metal wires instead of the traditional printed circuit board Due to be released in February 2006, the product will suit the vast array of cablers who are demanding more bandwidth in order to deliver new services to their customers The award was presented to Jason Hogue, ADC KRONE product engineer, who was instrumental in the development of the new technology The award was presented at the Newcastle awards night held on Thursday 24th November T “The design of the Leadframe jack is unique and very complex” “The design of the Leadframe Jack is unique and very complex,” said Hogue “The technology is difficult to manufacture, which is one reason why other companies have not attempted this particular design ADC KRONE’s regional product manager, Glen Johnston explained this further “Domestic and commercial users are demanding more bandwidth on their data networks to cope with the high-speed transfer of large amounts of data To achieve this, network components such as connector modules and wall outlets must be capable of handling this throughput at high frequencies without corrupting the data being transferred To achieve this in Leadframe design is a technological breakthrough that will shape our industry.” While some of the technology in the new jack was based on previous KRONE leadframe technology, there were numerous hurdles in redesigning not only the contacts, but also the plastic housings and the automation to assemble these complex components in high volumes To achieve Category compliance required an enormous increase in performance above any existing designs I “To achieve this in Leadframe design is a technological breakthrough that will shape our industry.” Category Leadframe Jacks NEW NETWORKS S RISERGUIDE FIBRE CABLE MANAGEMENT SY Solutions to Benefit Service Providers, Fortune 1000 Companies, and Cable and Wireless Operators DC KRONE’s FiberGuide® fibre management systems incorporate some of the most innovative optical raceway products available in the telecommunications industry today In response to customer requirements, ADC KRONE continues to innovate and improve FiberGuide systems, adding greater flexibility and driving down installation time to ensure a smooth deployment Because cable management requirements change with network requirements, the ADC KRONE FiberGuide product family now includes the riser guidance system, designed to both complement and extend the capability of the existing FiberGuide product range or use as a stand alone management solution providing horizontal and vertical cable management where you need it, when you need it In the past, active equipment had far less fibre to be managed Now, as technology advances forward the vast majority of network builds are deploying small form factor connector technology This can provide double the available port density A Alan Crawford, Product Manager Carrier Connectivity, Wireless & Wireline Horizontal to vertical transition part S to traditional connector types With the increase in port density comes an increase in patch cord density and greater potential for network failure Now more than ever, customers are beginning to realise cable management is becoming a makeor-break issue that must be addressed to maintain robust and secure networks, any network downtime can result in reduced production time and revenue streams RiserGuide safely and efficiently routes fibres for optimum network performance The system is designed to assure that the correct bend radius is maintained regardless of which components and sections are assembled The ADC KRONE RiserGuide is a modular, easy to both install and remove system, allowing for flexible cable management and full network optimisation It is comprised of a variety of components, built upon ADC KRONE’s unique Snap-Fit™ platform, providing flexible, optimised cable management and tool-free installation for both horizontal and vertical rack riser applications Storage of excess length patch cords NEW NETWORKS NT SYSTEM SIMPLE PLUG & PLAY INSTALLATION AND REMOVAL Installation Removal Specifically, the RiserGuide system can be installed between active equipment racks or cabinets for a vertical application as well as directly in the rack or cabinet for horizontal applications The RiserGuide system has been designed so cable management can be easily adapted with future network configuration changes This system is for customers who require cable management solutions that go beyond the out-of-the-box solution that may already be in place I FiberGuide® Fibre Management System FEATURES I I I I I NEW Multiple standard width riser Various components that can be installed anywhere on the riser including storage spools, radius limiters and cable guides Mountable within and between racks and in cabinets Half and full slack storage spools available Breakout cable slack storage NETWORKS BENEFITS I I I I I I I Provides flexible, “on demand” cable management Manages patch cords off active equipment up to FiberGuide Protects proper bend radius Easy to configure with simple snap-fit tool free installation Designed to meet GR-63 requirements Supported by ADC KRONE’s cable management expertise Provides a cable management solution that extends beyond the “out of box”solutions currently available S ETHERNET’S FUTURE IS BRIGHT Announcing ADC KRONE’s participation in the Ethernet Alliance, supporting the advancement of IEEE 802 Ethernet Standards thernet has become increasingly important to Australian technology users Up until just a few years ago, the typical Ethernet user was an IT professional supporting an enterprise network Nowadays, Ethernet is part of many Australian’s lives, including home users who often don’t even realize they are using Ethernet Today’s IP-friendly content and applications are passed seamlessly through a complex Ethernet network consisting of service providers, enterprise networks, and consumers Thus, Ethernet has become the unifying platform that enables communication of multiple forms of content voice, video and data - via the Internet and other networks using Internet Protocol (IP) For Service Providers, the writing is on the wall - deploy Ethernet Services or lose business and miss out on an expanding market Ethernet is the least expensive way to offer bandwidth and it allows carriers to easily scale bandwidth to the exact amount requested by their customers The Ethernet Alliance was created to further facilitate the advancement of technology and products based on IEEE 802 Ethernet standards The organisation will accelerate industry adoption and remove barriers to market entry by providing a coordinated, market responsive industry voice E Carsten Quiram, Marketing Director, Asia Pacific As a founding member of the Ethernet Alliance, ADC KRONE will play a key role in helping the Ethernet Alliance fulfil its mission of increasing market acceptance and reducing time-to-market of Ethernet products As a founding member of the Ethernet Alliance, ADC KRONE will play a key role in helping the Ethernet Alliance fulfil its mission of increasing market acceptance and reducing timeto-market of Ethernet products We look forward to helping the organisation advance Ethernet technologies and products within the Enterprise and beyond 10 S In addition to ADC KRONE, founding members of the Ethernet Alliance include 3Com, Agere Systems, AMCC, Aquantia, Broadcom, Force10 Networks, Foundry Networks, Intel, Lawrence Berkeley Labs, Pioneer Corporation, Quake Technologies, Samsung, Sun Microsystems, Tehuti Networks, Tyco Electronics, The University of New Hampshire InterOperability Laboratory (UNH-IOL), and Xilinx Brad Booth, President of the Ethernet Alliance welcomed ADC KRONE as a member, “The Ethernet Alliance is pleased to have ADC as a founding member ADC has been actively involved in IEEE 802 Ethernet specifications requiring the use of copper cabling, and we look forward to their input on the future of Ethernet.” Unlike past alliances that support single IEEE 802 Ethernet projects, the Ethernet Alliance will exist for as long as it remains relevant to IEEE 802 Ethernet technology It will support IEEE 802 Ethernet projects by: I Educating Ethernet users on their choices and implementations for various applications; I Cultivating efforts to define and develop new Ethernet technologies; I Speeding up acceptance and time-to-market for new Ethernet markets and technologies Activities for 2006 will focus on three key areas: Ethernet technology research, interoperability demonstrations and education To promote these, the Ethernet Alliance has started the research process for 100 Gigabit Ethernet, has initiated efforts to demonstrate 10GBASE-T, 10GBASE-LRM and backplane Ethernet interoperability, and is planning to show Consumer Electronic applications I For more information, visit www.ethernetalliance.org or contact Peter Meijer at peter.meijer@adckrone.com NEW NETWORKS STANDARDS UPDATE 10 GIGABIT ETHERNET CABLING To run 10 GBE applications, the physical cabling needs to meet either Category or Augmented Category requirements depending on the length and cable being used uns up to ‘55 metres’ on Category cabling will have to meet one of the following; ISO/IEC TR 24750 (a draft Technical Report from Europe), or TIA/EIA TSB-155 (a draft Technical Service Bulletin from America) R Runs up to 100 metres will have to be on Augmented Category cabling and will have to meet one of the following; I ISO/IEC 11801 Ed Amendment (a draft for Augmented Cat Cabling), or I TIA/EIA 568-B.2 Addendum 10 (a draft for Augmented Cat Cabling) I Augmented Cat in the ISO and therefore in Australia, will be called Cat 6A I Augmented Cat in America is often written as Cat 6A, but this may change to Cat 6A as standards harmonise ISO/IEC STANDARDS TR 24750 TR 24750 applies to existing and new installations of Cat cabling that are intended for 10GBE applications This is the ISO/IEC version of the TIA/EIA TSB-155 document (see later in this article) Power Sum Alien NEXT loss (PSANEXT) and Power Sum Alien ELFEXT (PSAELFEXT) are the parameters used to describe Alien Crosstalk (AXT) performance Several mitigation techniques are mentioned in TR 24750 to improve AXT performance for Cat installations Nearly all the recommendations follow the ADC KRONE mantra of “Random lay in the bundle and tray for Cat cable and Cat 6A.” TR 24750 also states that unbundling the Cat cables in the cabinets and racks in the Telecommunications Room will be extremely helpful (The ADC KRONE MasterMinder for rear cable management behind patch panels comes to mind for exactly this purpose) The most difficult task will be convincing building owners and their advisors that neat-looking straight parallel lines of cables are now a bad thing from a performance point of view Peter Meijer, JP BE MSc., RCDD, Technical Manager Industry Support ISO/IEC 11801 Edition Amendment Over 500 comments were received from the worldwide committee members on the 1st working draft of ISO/IEC 11801 Ed2.1 It was agreed to call the performance levels for 10GBE and beyond as Class EA and Class FA (what a sweet decision) using cabling components Cat 6A to 500MHz and Cat 7A to 1000 MHz respectively Existing Class E to 250MHz and Class F to 600 MHz will remain The ISO decided to proceed with the issuing of Channel specifications only at this stage to meet the IEEE 802.3an publishing timeline of June 2006 Permanent Link and component specifications will follow at a much later date This decision has angered some in the standards community because it makes ‘mixing and matching’ to achieve interoperability a difficult task ADC KRONE’s stance is that the Channel is most A summary of some 10GBE parameters for draft Class E and draft Class EA Channel Parameter Class E (TR24750) Class EA (ISO/IEC 11801 Ed2.1) IL Class E IL extrapolated to 500 MHz Class F IL extrapolated to 500 MHz RL Class E RL extrapolated to 500 MHz with 6dB plateau Class E RL extrapolated to 500 MHz with dB plateau at 251.2 MHz NEXT Class E NEXT extrapolated to 330 MHz, then to 500MHz at 31-50log(f/330) Class E NEXT extrapolated to 500 MHz PSANEXT 47-10log(f/100) 47-15log(f/100) 1-100 MHz 100-500 MHz 80-10log(f) 90-15log(f) 1-100 MHz 100-500 MHz PSAELFEXT 33.7-20log(f/100) 1-500 MHz 77-20log(f) 1-500 MHz NEW NETWORKS S 11 ADC KRONE CopperTen™ 4-connector channel tested to ISO and TIA 10GBE PSELFEXT draft requirements showing excellent headroom results ADC KRONE CopperTen™ 4-connector channel tested to ISO and TIA 10GBE PSNEXT draft requirements showing excellent headroom results important for 10GBE transmission and optimum performance is always achieved without ‘mixing and matching’ The ISO Channel specifications for Class EA are by now well understood and are unlikely to change significantly Even Alien Crosstalk requirements are well defined for Class EA, but there is still debate over the Class FA figures This standard will contain the “extrapolated” NEXT passmark even though this was not an initial requirement of the IEEE 802.3an specification The rationale from the ISO subcommittee is that a “a new technology will come along that needs the small increase in performance” This is despite history showing us that new technologies require significant performance increases; so the extra development costs to achieve “extrapolated” NEXT performance may be an unnecessary impost on the cabling industry However, this technical argument was fought and lost, so we move on It is likely that at least one or more tester manufacturers will soon have the capability to measure PSANEXT and PSAELFEXT in the field These tests will now be done on a sample of possibly the longest and the shortest runs representing approximately 10% of the installed cabling PSANEXT must be met at both ends of the channel introduced to handle a wider diameter cable that is needed by some other vendors to handle 10GBE TIA/EIA STANDARDS TSB 155 is for existing and new Cat cabling The Augmented Cat Addendum 10 document is for new Cat 6A cabling, and Addendum 11 is being 12 S TSB 155 Standards Technical Committees investigated the suitability of installed Category cables tightly bundled together in a 6-around-1 configuration, with fastening intervals of 100-300 mm, to check if the Power Sum Alien NEXT loss (PSANEXT) and Power Sum Alien ELFEXT (PSAELFEXT) exceeds the specifications of IEEE 802.3an Draft Results showed that unbundling these Cat cables significantly improves the alien crosstalk and can result in performance consistent with IEEE 802.3an Draft requirements for short cable runs Upcoming meetings of TIA’s copper cabling systems committee will put a priority on recommending mitigation methods, including unbundling cables and replacing equipment cords They expect more mitigation methods will be develop to comply with 10GBASE-T Alien Crosstalk requirements for installed Cat cabling TIA/EIA 568-B.2-10 Newly installed Cat 6A cabling should not require Alien Crosstalk mitigation techniques to the same extent as Cat cable because Cat 6A is designed to meet the requirements of the IEEE 10GBE link segment up to 100 metres The TIA 568-B.2-10 draft standard has over 300 outstanding comments that may take until March to finally resolve I NEW NETWORKS THE NEW ERA IN WIRELESS LAN Tim Takala explains the unique benefits of a sectorised wireless architecture, paving the way for the next stage of wireless LAN e at ADC KRONE would like to introduce you to the future of wireless LAN connectivity Herein you will gain a good understanding of how sectorised wireless architecture will deliver advanced wireless networking functionality W transmit power of the wireless station (client) Second, the client’s transmit power and receiver settings aren’t under the control of the access point and don’t change By decreasing the transmit power of the access point, the overall cell size shrinks only slightly OMNI-DIRECTIONAL ACCESS POINT PROBLEMS Tim Takala, Technical Director, Asia Pacific The vast majority of access point deployments today consist of the use of omni-directional antennas For the most part, this type of deployment has served the market well for home and light use in Enterprise networks As the number of wireless users has dramatically increased and the number of access points deployed to meet the needs of users increases, the omni-directional antenna becomes its own worst enemy CELL SIZE AND CO-CHANNEL INTERFERENCE In early wireless LAN deployments, convergence was king and little attention was paid to capacity What was soon realised is that the larger the “cell”, the more users you had connected to the same access point Providing acceptable levels of performance is important and with data rates of 54Mbps per access point (real-world throughput 22Mbps), only 10-12 active users can be handled per access point One common approach to increasing capacity is to simply add more access points on different channels and to make sure that any two that are on the same channel cannot hear each other The next most widely used approach to increase capacity is to try to use smaller cell sizes to increase the number of cells (access points) where one re-uses the limited set of non-overlapping channels While these approaches are commonly used, they create a number of major issues First, shrinking the cell size of an access point by lowering the transmit power doesn’t lower the NEW NETWORKS This concept of “extended cell” is very important because it sets a limit on how small cells can really be This is why some recent solutions prescribe the placement of an access point in every cubicle and turning the transmit power down Because of the collision avoidance scheme that governs data transmissions, clients and access points will wait until the medium is free before attempting to transmit their own packets Additional access points that are deployed within range of other access points on the same channel won’t add any additional capacity Access points or clients that can “hear” each other will result in waiting for the other transmitter to cease before attempting to transmit S 13 ADDING CAPACITY AND BANDWIDTH As the previous section pointed out, using omnidirectional access points requires careful planning to have at least one cell between other cells on the same channel This gets tricky with the limited number of non-overlapping channels Having cells laid out on separate channels like those in Part below, allows for seven cells to be on a unique channel This pattern can be repeated without interference between client stations or access points (Part below) If needed, the number of access points in each cell can be doubled by assigning them a completely different set of channels This requires fourteen unique channels (Part below) The issue of adding more bandwidth (capacity) becomes clear because there are only 12 802.11a and 3802.11b/g non-overlapping channels that can be used Therefore, you can only double the number of channels in each cell to add capacity (12 + = 15 channels; 15 channels/7 channels per reuse = access points per cell) OMNI-DIRECTIONAL ACCESS POINTS AND MULTI-PATH Omni-directional access points and multi-path omni-directional access points are not only bad neighbours for adjacent cells, but also generate a vast amount of performance-reducing multi-path Multi-path occurs when signals bounce off multiple objects in the environment and are reflected back to the receiver The effect is that weaker “copies” of the original signal arrive slightly later THE BENEFITS OF A SECTORISED ARCHITECTURE A better approach is using a sectored antenna system to focus RF energy into a single direction This next generation architecture provides multiple sectors and multiple radios together in a single platform for 360° coverage HIDDEN NODE PROBLEMS Omni-directional access points have another inherent problem A wireless station on one edge of a cell may not hear a station on the other side of the cell As a result, wireless stations won’t be able to hear when the other is transmitting This will cause two transmissions to collide requiring both stations to retransmit 14 S SECTORED ANTENNA SYSTEM AND CHANNEL RE-USE A sectored approach is vastly superior to omnidirectional As the following diagrams indicate, a NEW NETWORKS sectored approach creates sectors or “slices” of cell coverage Each sector uses a unique channel and by its very design, clusters clients together on the same channel under the area of the sectorised antenna pattern SECTORED SYSTEMS; MULTI-PATH AND PERFORMANCE As previously discussed, omni-directional access points inherently create large amounts of performance-robbing multi-path With a sectorised approach, this problem is greatly reduced because RF energy is not blindly transmitted RF signals are transmitted in the direction of the wireless client within a given sector only WLAN ARRAY: A SECTORISED APPROACH Cellular network operators have long understood this benefit and make use of sectored base stations Each WLAN Array can provide up to 810Mbps per cell if all twelve 802.11a channels and three 802.11bg channels are used This pattern can be used over and over With this the WLAN Array provides eight times the capacity than omni-directional solutions SECTORED ANTENNA SYSTEMS AND HIDDEN NODES A sectorised approach is vastly superior to that of omni-directional in eliminating Hidden Node issues, because all wireless stations (clients) in a given RF sector are associated to the same radio; so they are geometrically on the same side of the WLAN Array Since the clients exist in the same sector, the hidden node problem is eliminated NEW NETWORKS ADC KRONE has delivered the most efficient use of Wi-Fi spectrum with its family of WLAN Arrays By using a sectored antenna system and solving the fundamental problem of allowing multiple Integrated Access Points to function in a single platform, ADC KRONE has introduced a new paradigm for enterprise Wi-Fi deployments POWERFUL WI-FI DEPLOYMENTS The WLAN Array can create a sectorised wireless cell of up to 864Mbps (16 x 54Mbps), by integrating up to sixteen separate Integrated Access Points in a single platform, taking the place of sixteen traditional WAP’s The sectorised approach of the WLAN Array provides a superior level of automatic channel planning, load balancing, and station roaming Because the WLAN Array makes use of every available non-overlapping Wi-Fi channel, the best possible channel plan can automatically be used The WLAN Array allows for high density radio service at a fraction the management pains and cost of deployment Instead of installing large numbers of access points, a single WLAN Array can be installed The WLAN Array architecture is completely Wi-Fi interoperable The products support all three Wi-Fi modes: 802.11a, 802.11b,and 802.11g Lastly, the ADC KRONE approach frees IT administrators from the hassles of managing a sea of legacy omni-directional access points The fewer devices to manage, maintain, troubleshoot and upgrade the better I This material was supplied through ADC WHQ S 15 I need TrueNet ® TrueNet is the high-performance structured cabling solution that meets your unique network needs Your one true network infrastructure solution, TrueNet is the integrated portfolio of industry-leading products from ADC KRONE I NEED ONE TRUE NETWORK INFRASTRUCTURE SOLUTION True End-to-End Solution Now your complete network infrastructure needs are met by a single global manufacturer The TrueNet system delivers proven cable, connectivity, and cable management solutions for fibre, 10G Ethernet over UTP, and Category 6/5e from the data centre to the desktop True Performance With TrueNet, you can push networks to the performance edge Innovative products that exceed industry standards support advanced applications today and tomorrow True Reliability Mission-critical networks rely upon trusted TrueNet infrastructure Built and tested in ADC KRONE's world-class facilities, TrueNet guarantees signal integrity and network throughput AUSTRALIA Hereford Street, BERKELEY VALE NSW 2261 Ph: (02) 4389 5000 Fax: (02) 4388 4499 TECH SUPPORT: 1800 801 298 WEBSITE: adckrone.com/au NEW ZEALAND Cnr The Esplanade & Nevis St, PETONE NZ Ph: +64 576 9213 Fax: +64 576 9243 SALES: 0800 657 663 WEBSITE: adckrone.com/nz ... 3 1-5 0log(f/330) Class E NEXT extrapolated to 500 MHz PSANEXT 4 7-1 0log(f/100) 4 7-1 5log(f/100) 1-1 00 MHz 10 0-5 00 MHz 8 0-1 0log(f) 9 0-1 5log(f) 1-1 00 MHz 10 0-5 00 MHz PSAELFEXT 33. 7-2 0log(f/100) 1-5 00... 1-5 00 MHz 7 7-2 0log(f) 1-5 00 MHz NEW NETWORKS S 11 ADC KRONE CopperTen™ 4-connector channel tested to ISO and TIA 10GBE PSELFEXT draft requirements showing excellent headroom results ADC KRONE CopperTen™... introduction of ADC KRONE? ??s fibre and wireless product ranges into the Australian market NEW NETWORKS S DATACOM NZ ENJOYS INSTANT ROI FRO PATCH-BY-EXCEPTION SOLUTION Datacom NZ’s installation of ADC KRONE? ??s