Tài liệu Education pdf

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 Keyph

23

VERTICAL MARKET APPLICATION PAPER:

EDUCATIONAL SERVICES

EDUVMAP2.doc © KRONE Asia June 2000

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

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

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

Communication and Electronic Systems

The table below indicates the frequency with which various communications and electronic systems are typically found on educational campuses

CCTV Security Access

Control

MATV / SatTV

Primary Always Always Some

-times

Usually Rarely Usually Rarely Usually

Secondary Always Always Some

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

• 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

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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 worksta tions 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 conta in 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 23The 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 23Data 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

• 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 Ethe rnet 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 camp us 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

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VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Education June 2000 Page 12

Typical Tertiary Campus Networks

Figure ED-04 shows typical systems found on a tertiary campus

In addition to the systems found in Primary and Secondary Schools, the following systems are also found:

• Video-conferencing suites for distance learning or campus lecturer sharing programmes, usually ISDN based These suites usually have fax, phone and data network facilities

• Computer resource rooms and computer laboratories These usually have video

surveillance cameras wired back to time lapse recorders and/or security alarm

monitoring stations

• Surveillance cameras and sometimes emergency telephones in public and bag

rack/locker areas and lobbies, usually monitored at a security guard station

• Access control systems restricting entry by time of day or at all times to authorised persons only, sometimes also to activate door automation for disabled students

• Building automation and/or energy management systems

The automation, surveillance and access control systems will often require specific cabling such as figure 8 flex for 12V or 24V power feeds and screened or coaxial cables to the field points Often UTP structured cabling can be substituted for custom cabling to these field points (see KRONE

PremisNETC³ Solution literature) All these systems usually make use of the "data" fibre backbone

infrastructure to link systems in individual buildings together to the respective master node or

monitoring point

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Education June 2000 Page 14

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 layout

• The bridging and isolation facilities offered by the standard Series 2 10 pair

disconnection modules offe r significant testing, troubleshooting and maintenance

advantages over most competing products

• The LSA Plus system's silver plated angled insulation displacement terminations offer superior conductivity, reliability and the ability to terminate the widest range of conductor and insulation sizes and both solid and stranded types, including double terminations of solid conductors

standards when used in conjunction with cables from a variety of vendors and when used in conjunction with the HighWire cables in a TrueNet solution yield guaranteed error free performance at the highest available networking speeds

• KRONE Highlight fibre optic panels offer a wide range of density and connector types and feature superior protection from mechanical damage for fibre patch cords

and generous cable management for open frame rack and enclosed rack distributors

• The flexibility of the KRONE solution allows the performance and mechanical features

of most competing vendor products to be matched or exceeded

• Extended warranty programs are available in conjunction with a range of cabling vendor products allowing the most stringent warranty requirements to be met

This section details how specific KRONE products may be assembled into building blocks to offer a total solution for Educational premises

Educational customers may build total KRONE solutions to meet their particular needs simply by specifying which building blocks to use at each distributor, the workstation outlet locations and the required backbone capacity

All building block diagrams show the KRONE part numbers for each element for ordering purposes and to allow more detailed product specifications to be verified in the KRONE Product Catalogue

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

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Primary and Secondary Schools

Figure ED-05 shows a typical distribution arrangement for a medium sized Primary School

Some of the key features are:

• Campus distributor is located roughly at the physical centre of the network, but is also within easy reach of administrative office staff for the purposes of doing server

administration and managing server backups Office workstations may also be

connected to the campus switch ports directly to offer best performance on bandwidth

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Education June 2000 Page 16

Library, which was constructed later than the initial network, it was more economic to establish a small new distributor to serve this one area Extra workstations can be cabled easily without accessing other building areas

• A six classroom block towards the top of the campus was built as a stage of a master plan calling for further buildings surrounding this block A higher capacity telephone backbone cable and fibre data backbone with four spare cores were run to this

building's distributor When another building further away was added, the voice cable was extended at the distributor frame and the four spare fibre cores spliced inside the fibre box

• Public address backbone cabling was run in standard (underground) telephone pair cable to each building At the six classroom block extra pairs were run and an IDF installed allowing the later 4-classroom block to be connected at the IDF All internal and externa l speakers wire as an individual circuit back to the PA MDF in the admin office

The methodology for a high school would be similar except that the buildings would be larger with many non-classroom spaces yielding fewer outlets per m² Alternatively high schools may also be comparable to one or more buildings of a campus as detailed in Figure ED-06

Tertiary Campuses

Figure ED-06 shows a campus which could be a small university or TAFE college Features include:

• Due to the large number of voice services in each building, pair managed wall frames are used at each building distributor to feed lines to modular patch panels at each floor distributor

• Some of the multimode backbone fibre lines are used for video surveillance cameras, building automation and security/access control links

• Single mode fibre inter-building backbones are used for Gigabit Ethernet with long wavelength single mode transceivers for distance reasons in some cases These links are all upgradeable to 10 Gbps Ethernet and beyond in the future and can also be linked directly to carrier services appearing on single mode fibre

• One fibre to each building could also be used for broadband TV distribution of free to air, in-house and educational satellite channels using a six way active optical splitter at the campus node and broadband optical receiver amplifier at each building distributor feeding a hybrid arrangement of coax and UTP+balun lines to TV receivers

• All floor distributors in the largest building wire back to the campus distributor directly

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Education June 2000 Page 18

Building Blocks

Figure BB-01 Integrated Voice/Data Floor/Zone Distributor

Target applications:

• Distributor serving a limited area

• Building extensions comprising several classrooms

• Flexible distribution for limited area or space (library, computer lab)

In cases where a school comprises one large building the size of building may be too large to cable all workstations from the campus distributor

The most economic distribution is to establish several cabling zones in the one building and establish

a local wall mount patch field distributor in each zone Spare ports may be used to easily add further outlets in the future Two UTP Cat5e backbone lines to the campus distributor provide the uplink path from local repeaters to the campus switch

The use of wall frames is only practical where security is not an issue and equipment is unlikely to be damaged by equipment, boxes or books being stacked or stored against the hub equipment

The repeater shelf should have rounded corners to avoid injury and both wall frame and shelf may

be mounted above head level (say 2000 AFFL to base) to conserve floor space

Typical location is a staff office or library workroom wall

VERTICAL MARKET APPLICATIONS: EDUCATIONAL SERVICES 23

Figure BB-02 Small Distributor With Hard Wired Phone Support

Target applications:

• Single building schools comprising four to five classrooms and one or two offices

• Integration of telephone MDF, security dialler wiring, legacy phone wiring and new data wiring in a small administration building

• Classroom blocks with existing secure shallow closets or cupboards which can be used for hubs

• Voice data integration where low pair count voice tie cable exists and integration of legacy phone wiring is required without rewiring old phone points (replace/expand old

"FDP")

Location and installation considerations as for BB-01 apply

Advantages of using this KRONE solution include:

• Easy conversion for users from pair management to sockets labelled with phone

numbers

• Optimal utilisation of pairs on tie cables

• Easy paralleling of phone lines to allow same line to appear on two or more sockets for patching to new workstation outlet lines

• Break in and bridging test access, pair isolation for phone troubleshooting

• 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