Tài liệu Education pdf

23 VERTICAL MARKET APPLICATION PAPER: EDUCATIONAL SERVICES EDUVMAP2.doc © KRONE Asia June 2000 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 3 TABLE OF CONTENTS EDUCATION SECTOR DESIGN CONSIDERATIONS .4 INTRODUCTION .4 CHARACTERISTICS 4 COMMUNICATION AND ELECTRONIC SYSTEMS 5 CHOICE OF MODULAR PATCH PANEL DISTRIBUTOR .5 TELEPHONE AND DATA INTEGRATION .6 PRIMARY CAMPUS LAYOUT ISSUES 6 SECONDARY CAMPUS LAYOUT ISSUES 6 TERTIARY CAMPUS LAYOUT ISSUES .7 STANDARD EDUCATION NETWORKS 8 SCOPE 8 STANDARD CABLING ARCHITECTURE 8 STANDARD DATA NETWORK ARCHITECTURE 9 TYPICAL PRIMARY AND HIGH SCHOOL NETWORKS 10 TYPICAL TERTIARY CAMPUS NETWORKS 12 KRONE EDUCATION SOLUTIONS .14 INTRODUCTION .14 OVERVIEW 14 Primary and Secondary Schools 15 Tertiary Campuses .16 BUILDING BLOCKS 18 Figure BB-01 Integrated Voice/Data Floor/Zone Distributor 18 Figure BB-02 Small Distributor With Hard Wired Phone Support 19 Figure BB-03 Small Building Distributor With Keyphone Support 21 Figure BB-04 Small Floor/Building Distributor With Fibre Support .22 Figure BB-05 Small Building or Campus Voice and Data Distributor .23 Figure BB-06 Small Campus or Medium Sized Building Distributor .25 Figure BB-07 Medium Size Campus or Medium Height Building Distributor .27 Figure BB-08 Large Floor Distributor 30 PUBLIC ADDRESS DISTRIBUTION .32 Introduction 32 Technical Considerations .32 The KRONE School PA Solution .33 REFERENCE DOCUMENTS .36 GLOSSARY OF TERMS 36 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 4 Education Sector Design Considerations Introduction This paper considers communications and data networking solutions for educational institutions ranging from small primary schools to tertiary universities and colleges. The use of KRONE products to offer complete solutions for the basic phone, data and public address networks is illustrated and the connection of CCTV, security, access control and MATV to use the basic networks is shown. Characteristics Education differs from many other markets due to the typical layout of sites and the purpose and history of the buildings on the campus. Typical characteristics of educational establishments include: • Campus comprising multiple buildings, usually three storeys or less except for the largest institutions • Substantial communications cabling is added to existing buildings which may not contain purpose built spaces for distributors • Computers typically outnumber telephones by a factor of four or more • Computer applications used tend to be more data intensive than commercial office environments, with significant graphic/image and multimedia network traffic • Premises can contain rooms with unusually high computer densities, notably computer laboratories, computer resource rooms and libraries • Video conferencing is increasingly being used to link campuses or to enrich the choice of subjects • The campus may include residential buildings for boarding students and/or selected staff VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 5 Communication and Electronic Systems The table below indicates the frequency with which various communications and electronic systems are typically found on educational campuses. System è Institution ê Phone Data Video- conf. Public Address CCTV Security Access Control MATV / SatTV Primary Always Always Some - times Usually Rarely Usually Rarely Usually Secondary Always Always Some - times Usually Some- times Usually Rarely Some - times Tertiary Always Always Often Rarely Often Usually Often Minimal Degree of infrastructure integration Work- station outlets sometimes integrated with data. Outlets sometimes integrated with phone. Shares phone backbone if ISDN based. Outlets sometimes integrated with data. Shares cable pathways sometimes. May use spare data backbone fibres. Could use UTP outlets with baluns but no economic incentive Shares cable pathways sometimes. May use spare data backbone fibres. May use spare data backbone fibres. May use spare data backbone single mode fibres, may use UTP data outlets with baluns. Systems not considered further in this paper which may use the same cable routes or have gateways to a computer network include: • Fire detection • Emergency Warning Intercommunication System • Building Automation and / or Energy Management System • Heating / Ventilation / Air conditioning control • Emergency Lighting Monitoring System The scope for integrating services on a common infrastructure is greatest where a new building or campus is being constructed. The use of a "Premises Distribution System" comprising a common cabling infrastructure for all these services is possible within specific equipment, cabling methodology and segregation/security constraints. The techniques used are common to all cabling markets and the standard KRONE solution is detailed in “KRONE PremisNETC³ Solution for the Structured Cabling of Intelligent Buildings” (see references at the end of this document). Choice of Modular Patch Panel Distributor In Educational premises support is often provided by teachers, parents, students and trainees who find it difficult to understand pair managed frame distributors, especially when used with mixed voice and data. The use of modular patch panels is thus recommended at all user accessible distributors. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 6 Telephone lines may be wired to appear as patch panel sockets labelled with the respective line or extension number, with labels shaded in different colours to wall outlets to help fast recognition of phone services. The use of modular patch panels also facilitates the use of the one type of cord at both workstations and outlets in turn simplifying testing of phone lines and phone handsets, data lines and data repeater or switch ports through the use of a common physical interface. Telephone and Data Integration Where a data network is being established on a campus with substantial existing phone distribution it is usually most economic to leave the telephone distribution separate and to create links to existing phone distribution points where phone connectivity is required in the data network. The establishment of a campus wide data network and the widespread use of computers may drive the more widespread use of telephone handsets to facilitate access to help desk services. The opportunity to provide extra telephone cabling at lower incremental cost than separate cabling at a later date by extending the scope of a nominally data cabling contract may also be taken to increase phone penetration allowing teachers to contact administration staff for assistance without leaving the classroom or sending students on errands. Increasing telephone handsets or extensions may require upgrades to telephone system extension capacity and possibly the upgrading or provision of telephone backbone cabling. The maximum flexibility is achieved if the horizontal distribution cabling from Floor Distributors (often known as "hubs" or "patch panels") to telephone handsets uses the same structured UTP cabling and outlets as networked computers. Telephones do NOT share the same outlet as a computer by splitting horizontal cable pairs between two sockets. Primary Campus Layout Issues Primary Schools often use quite small building modules, typically four to five classrooms, connected by covered ways to other similar sized buildings. In such cases the average building size may be 500 m² and contain under 30 voice and data outlets. Underground routes are usually provided or required to link each building to the building containing the "Campus Distributor" which is the network master node which serves other buildings. In recently established suburbs schools may be built in multiple stages. Where a future building will be near or adjacent to an existing building, it may be most practical to provide spare backbone capacity to the first building and then extend these backbones to one or more adjacent buildings as they are constructed. On larger campuses this avoids having to pull new building cables all the way through the campus and more effectively utilises any existing ducts and conduits. Due to small building size it may be possible to link building distributors using Cat5e underground UTP cable and avoiding the expense of fibre optic cables in areas of low lightning exposure (less than 10 thunder days per year). Secondary Campus Layout Issues Secondary campuses usually comprise much larger buildings, often two storeys but rarely more than three storeys. To reduce backbone costs and increase hub utilisation, it is often most practical to wire all outlets on a multi-storey building to a single distributor on the middle or upper floor. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 7 The upper floor is the preferred distributor location due to better availability of cable pathways above in gable roof or suspended ceiling construction. Upper floors are also preferred for greater numbers of computers such as computer labs because smash and grab theft and vandalism is unlikely through upper floor windows. The widely variable use of secondary campus buildings leads to a wide range of outlet counts per building. Buildings containing trades workshops and arts areas will have fewer outlets and smaller distributors than administration, library and information technology areas. The larger spread of secondary schools usually makes fibre optic backbone cable essential for data networks for distance reasons. Where cable lengths exceed 285 metres single mode fibre is likely to be a more economic long term solution than the multi-mode fibre more commonly used in building applications. Tertiary Campus Layout Issues Tertiary campuses usually comprise a number of large floor area multi-storey buildings. Where data or phone density is relatively low it is common practice to use a distributor on one floor to serve the floors above and below. Tertiary Campuses differ from other commercial premises in that each faculty may have its own semi-autonomous IT infrastructure and servers. As a result building data distributors may be located in computer equipment rooms. Tertiary campuses usually have large PABX's with thousands of extensions and in some cases multiple switching nodes. These require large wall mount distributors for cable terminations. The size of a tertiary campus is usually large enough to warrant the provision of some single mode fibre capacity to all buildings. Some computing infrastructure will be mission critical and justify the provision of backbone cables run over diverse routes to prevent disruption in the event of cable damage. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 8 Standard Education Networks Scope This document provides detailed solutions for voice, data and PA cabling. The approach recommended for these systems may in part be extended to other "premises" services such as CCTV, MATV, security and access control, predominantly at the backbone level (refer also to “KRONE PremisNETC³ Solution for the Structured Cabling of Intelligent Buildings”). Standard Cabling Architecture The standard cabling architecture recommended is the "hierarchical star distribution" method detailed in International Standard ISO 11801 and incorporated into AS 3080. Figure ED-01 below illustrates this generic strategy. Voice and data services each radiate out from their own campus node over backbone cables to "building distributors" usually located on the ground level of each campus building. Often on educational premises there will not be any further distributors within the same building. In tertiary campuses larger buildings are more common and each building distributor may serve one or more floor distributors on each floor. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 9 Data backbones will generally be multiple core multimode or single mode fibre optic cables. Cat5e UTP cables may be used for backbone runs where all the following apply: • under 90 m cable length • sites has low lightning exposure • links speed of 1 Gbps maximum • budget is restricted Voice backbones usually comprise multi-pair telephone cables, underground rated with moisture barrier when run between buildings. Standard Data Network Architecture The standard approach to educational data networking is illustrated in Figure ED-02 below. This approach is often termed the "collapsed backbone" method and suits the IEEE 802.3 suite of standards for data networking otherwise known as "Ethernet" predominant in the educational environment. The approach is broadly to use higher powered Ethernet switches at the main campus node to balance traffic from servers amongst backbones to building distributors. Within each building a further switch is used to subdivide backbone traffic to switches and repeaters serving workstations located in the same distributor or at other floor distributors, or connected directly to the switch. In campuses with under 300 students the main campus switch may be the only switch, with other building distributors containing one or more repeaters uplinked directly to campus switch ports. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 10 Typical Primary and High School Networks Figure ED-03 below shows typical systems found in a school campus and how they are interconnected by distribution cabling. The dash-dot lines indicate data distributors which would typically comprise KRONE Highway modular patch panels for workstation outlet lines and KRONE Highlight SC (or on legacy sites ST) fibre patch panels for backbone connections. The dash-hyphen lines indicate voice distributors which would usually be co-located with data distributors, comprising KRONE Highway modular patch panels for workstation outlet lines and a mixture of KRONE Highway modular patch panels or Profil or FT pair managed frames for backbone services. The Public Address cabling can follow the same routes but will terminate on pair managed frames throughout with cabling and boxes kept sufficiently distant from telephone cabling to prevent crosstalk from PA into phone. The Public Address Main Distribution Frame is usually located inside or adjacent to the PA amplifier and line key selector console which is usually in a general office area. [...]... respective master node or monitoring point Education June 2000 Page 12 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 13 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 KRONE Education Solutions Introduction The wide range of KRONE products available offers a flexible and reliable solution to communications distribution for every size of educational premises and every building... frame systems Typical applications • • Education University campus distributors Campus distributors for schools and colleges with over 1500 students June 2000 Page 27 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 28 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 29 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Advantages of the... buildings separated by large distances (say up to 400 m) • Education Combines all the advantages of Fig BB-01 to BB-04 above Comprehensive interconnection and integration capabilities for all voice and data systems June 2000 Page 23 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 24 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Figure BB-06 Small Campus or Medium... when the cabinet is fully occupied with equipment • Education Protection of fibre patch cords on the patch panel through angled mountings to maintain bending radius and cover over patches Ample patch cord slack management June 2000 Page 30 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 31 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Public Address Distribution... dramatically reduced June 2000 Page 34 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 35 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Reference Documents The following documents provide further detail on the products recommended and their installation and application practices: • Future Proofing Your Campus: Educational Services, February 2000 • KRONE On-Line Catalogue...VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 11 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Typical Tertiary Campus Networks Figure ED-04 shows typical systems found on a tertiary campus In addition to the systems found in Primary... Overview Education campus distribution systems comprise a number of distributors linked together by backbone cables The size and layout of the distributors depends on the number of workstations being served As many schools have an adequate existing voice distribution system, examples of distributors with and without voice services are given Education June 2000 Page 14 VERTICAL MARKET APPLICATIONS: EDUCATIONAL... each floor distributor All floor distributors in the largest building wire back to the campus distributor directly June 2000 Page 16 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 Page 17 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Building Blocks Figure BB-01 Integrated Voice/Data Floor/Zone Distributor Target applications: • Distributor serving a limited area • Building... speakers Education June 2000 Page 32 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 The KRONE School PA Solution The KRONE solution employs typical hard wired telephone distribution techniques including telephone cable (underground rated where underground) and pair managed termination system (Profil frames and Final Connection Boxes) This solution is illustrated below in figure ED-07 Education. .. phone troubleshooting • Education Easy conversion for users from pair management to sockets labelled with phone numbers Good termination options for old phone wiring, support for mode 3 security connections and hard wired connections which cannot be patchable such as fire alarm, lift phone or leased data services June 2000 Page 19 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES Education June 2000 23 . APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 13 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 14 KRONE Education. VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page 11 VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23 Education June 2000 Page