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642-104 | Unified Communication for System Engineers

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642-104 - Unified Communication for System Engineers - braindump

Vendor Cisco
Exam Number 642-104
Exam Name Unified Communication for System Engineers
Questions 218 Q & A
Recent Update February 14, 2019
Free PDF Download 642-104 Brain Dump
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642-104 exam Dumps Source : Unified Communication for System Engineers

Test Code : 642-104
Test Name : Unified Communication for System Engineers
Vendor Name : Cisco
Q&A : 218 Real Questions

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Cisco Unified Communication for System

Architecting Cisco Unified Communications supervisor 12.5 – An Evolutionary story | killexams.com Real Questions and Pass4sure dumps

closing week i was with lots of our purchasers attending Cisco live Barcelona. Barcelona is a fantastic illustration of a brilliant, contemporary metropolis, the host of the annual wise metropolis Expo. across the metropolis, up to date structures like Frank Gehry’s Golden Fish (El Paix) and the Museu Blau (Herzog and de Meuron) blend with typical Catalan gothic architecture and Antoni Gaudi’s brightly coloured designs, impressed by way of nature.

in all probability probably the most famous of Gaudi’s works is the Basilica de la Sagrada Familia. Work on the basilica started over 135 years ago. construction has been continuous ever considering, and today is about 70% comprehensive. Work will proceed until at least 2026. unfortunately, Gaudi handiest lived to peer the completion of 1 of the superb towers. however following his dying, the assignment became no longer abandoned. Successive architects, sculptors and different tradesmen have collaborated to proceed in opposition t his imaginative and prescient. along the style, they have embraced contemporary development strategies and substances. The addition of each new facade and tower, delighting friends with new experiences and reworking the city skyline. i will’t wait to come back back and notice the way it has changed on my subsequent consult with.

As an engineer, this obtained me brooding about parallels with the items I care for. i am fortunate to be the newest engineering leader to have accountability for Cisco Unified Communications supervisor.

over the past twenty years UC manager has developed. It has built on its commercial enterprise IP telephony and voicemail heritage, to accommodate new expertise and new techniques of working. fast messaging and presence, mobility, telepresence, virtualization and cloud collaboration, and lots extra have all been embraced. in consequence, UC supervisor is trusted with the aid of over 200,000 organizations to deliver cozy conversation and collaboration capabilities for his or her individuals and groups.

And this week, Unified Communications supervisor acquired even enhanced. liberate 12.5 is generally available now.

A key goal for us in this unencumber was to simplify administration and reduce your complete can charge of ownership. it's full of facets to make administrator’s lives more convenient. listed below are just a few:

  • All Cisco Jabber and video endpoint* configuration can now be executed directly from Unified CM’s administrator’s interface (no more XML data!).
  • that you can manage Cisco Headsets* from Unified CM too, simplifying configuration management, stock tracking, utility upgrades, and extra.
  • We reduced the time it takes to upgrade your Unified Communications manager equipment by way of up to 50% with primary “one-contact” cluster-wide upgrades.
  • Provisioning new phones has never been more convenient with secure on-boarding, the usage of fundamental sixteen-digit or QR codes.
  • (*be aware: Video endpoint and Headset management want Unified CM liberate 12.5 SU1, obtainable April/may additionally 2019)

    Of path, we didn’t ignore conclusion-clients. We created a more consistent event for extension mobility clients. And we made Jabber cellular deployments extra strong and feature prosperous. We additionally enabled interworking between on-premises Jabber IM&P and Webex groups messaging. by the way – do you know that Jabber 12.5 also supports a brand new “team Messaging Mode”? It potential that you would be able to use Unified Communications manager for business calling, and attach to the Webex crew messaging provider for next technology company messaging.

    As in every liberate, we fortify our security capabilities. We delivered elliptic curve cryptography help, granular controls for cipher administration, encrypted quick messaging archiving, and a few different enhancements.

    There are dozens of things we might talk about, but you probably get the aspect. Our strategy is to proceed to give astounding on-premises options, at the same time as we aggressively boost our cloud portfolio. We recognize hundreds of hundreds of you, our shoppers, depend upon it!

    Cisco Unified Communications supervisor 12.5 has had essentially the most rigorous testing. it is the very best quality unencumber for decades. I’m certain you will definitely love it. however, just like the planners, architects and engineers who're using the city of Barcelona and the Sagrada Familia forward, we aren't accomplished yet! truly, we are already planning our subsequent release. we're going to leap straight to “liberate 14” (any guesses why?).

    while we are still early on in the process, we're thinking about tremendously enhancing our consumer interfaces, greater seamlessly integrating to our cloud services portfolio, and increasing scale. I should still likely not share a whole lot greater, as roadmaps are at all times in flux. besides the fact that children, i might love to hear what you may want to see us doing next. depart me your comments beneath.

    Share:


    pro Unified Communications expert Tom Puorro Joins Plantronics | killexams.com Real Questions and Pass4sure dumps

    December 18, 2018 08:00 ET | supply: Plantronics, Inc.

    photograph-unencumber

    Tom Puorro

    Tom Puorro joins Plantronics, Inc. as govt vice president, GM, neighborhood systems.

    Plantronics, Inc.

    SANTA CRUZ, Calif., Dec. 18, 2018 (GLOBE NEWSWIRE) -- Plantronics (NYSE: PLT), an audio pioneer and unified communications (UC) expertise chief, today announced Tom Puorro is joining the business as government vice chairman, standard supervisor, neighborhood programs. during this function, Puorro will lead the crew accountable for audio and video collaboration solutions for the up to date workplace.

    “Tom’s deep advantage and keenness for the UC enterprise make him an immense addition to our management and product teams,” talked about Joe Burton, Plantronics President and Chief government Officer. “His journey will support us execute our imaginative and prescient and develop our position because the communications and collaboration associate of choice.”

    “The UC industry is exploding and using demand for simpler and greater consistent experiences throughout assembly rooms of all shapes and sizes,” referred to Puorro. “Plantronics is uniquely located to fulfill the market wants of our world valued clientele with a large and growing to be portfolio.”

    Puorro joins the Plantronics leadership team as the company is focusing greater closely on simplifying the conferencing event, despite the underlying UC platforms. A contemporary analyze conducted by way of Forrester Consulting on behalf of Plantronics discovered that video conferencing is growing in utilization, within the number of solutions, and in ordinary complexity for conclusion clients. actually, 74 p.c of IT determination makers and authorities say video conference calls have accelerated over the last two years, signaling a necessity for basic endpoints.

    Puorro brings with him 25 years of UC event, most currently at Cisco in the function of VP, Engineering and VP & GM of the Cisco Unified Communications technology community. because the VP, Engineering at Cisco, Puorro oversaw the business’s video and voice endpoints, including all video telephones, telepresence, and Tandberg, and led Cisco’s acquisition of BroadSoft.

    Puorro assumes his function as executive vice chairman, GM, neighborhood systems valuable nowadays.

    About Plantronics

    Plantronics is an audio pioneer and a pacesetter in the communications business. Plantronics expertise creates wealthy, herbal, individuals-first audio and collaboration experiences so decent ideas may also be shared and heard—anywhere, on every occasion and besides the fact that children they occur. The business’s portfolio of built-in communications and collaboration solutions spans headsets, utility, desk phones, audio and video conferencing, analytics and features. Our options are used worldwide via patrons and organizations alike and are a number one alternative for all types of workspace. For extra tips seek advice from plantronics.com.

    All logos are the property of their respective house owners.

    Plantronics Media Contact:

    Shannon ShamoonManager, corporate Communications+1 (831) 201-9142

    a photo accompanying this announcement is purchasable at http://www.globenewswire.com/NewsRoom/AttachmentNg/6d73dcf3-f3b0-457e-82d6-126d8e4f9628

     

    Santa Cruz, California, u.s.

    Tom Puorro_Headshot_Dec2018

    Tom Puorro joins Plantronics, Inc. as executive vice chairman, GM, community techniques.

    Plantronics, Inc.

    formats accessible:

    Plantronics.jpg

    codecs obtainable:


    the place We’re Going With Unified Communications | killexams.com Real Questions and Pass4sure dumps

  • post
  • A enterprise isn't an island. organizations have to be in consistent communication with valued clientele, purchasers, providers, contractors, employees, companions, and extra — which potential agencies want complete communications techniques. at the beginning of the decade, communications providers all started providing unified communications solutions, which brought together voice, video, rapid messaging, e-mail, and other strategies right into a single, synchronous provider. It become a tons-obligatory revolution in business verbal exchange.

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    Yet, seeing that then, conversation behavior has shifted. know-how is dramatically extra superior, and workforces are overwhelmingly mobile; normal unified features without problems now not cover modern enterprise communique wants.

    fortunately, this isn’t the conclusion of unified communications options. The trade is shifting alongside company and consumer behavior. read on to learn extra in regards to the future of unified communications.

    mobile capacity

    considering that their introduction, cellular instruments have taken over the place of work. Many employers offer business cell devices to high-ranking leaders, for you to stay linked at any place they go. different personnel have taken the initiative to accumulate their personal mobile tech. at last count, more than 42 % of agencies are executing a BYOD coverage, however 87 p.c of groups accept as true with their personnel use personal contraptions for work while away from the office.

    find it irresistible or not, the place of work is going mobile — and communications must sustain. The unified communications solutions of the long run should combine the gamut of cellular gadgets to be effective at uniting a personnel’s communications systems. Cisco Unified Communications systems already allows for cellular devices to access the corporate network, so organizations that vicinity a high priority on cell integration should still consider transitioning to this revolutionary unified communications company.

    Cloud Compatibility

    The cloud is spreading into every nook of business, so it is going to be no surprise that unified communications has caught a whiff. Most unified communications providers present a bevy of cloud solutions — however now not all of them are advantageous to all organizations.

    for instance, startups could improvement from wholly cloud-based mostly communications, wherein case it is crucial that unified communications remain appropriate with different company purposes, like customer relationship management options. meanwhile, higher businesses with based unified communications may decide on cloud communications features that officer more suitable agility.

    For corporations that have yet to connect with the cloud, unified conversation programs present an attainable entry aspect. so long as company leaders find trustworthy communications suppliers with amazing, cozy clouds, there is little risk in trusting the cloud for communications options. in fact, the cloud can be the most effective communications device of the longer term.

    Collaboration tools

    because the body of workers is more cell than ever earlier than and since the cloud makes digital solutions fundamental, collaboration tools have become vital for bringing teams together to achieve initiatives. applications like Google doctors and Slack make it more convenient to arrange projects, brainstorm, and perform tasks in organizations, however with out broader, extra bendy communications solutions, collaboration can nonetheless be a chore.

    consequently, unified communications solutions should deliver collaboration alternatives — or else be suitable with a firm’s present collaboration methods. Already, some communications providers present UCC, or unified communications and collaboration, which is software designed to coordinate collaborative efforts and communique tech. however, it's vital that business leaders remember the resources required by UCC solutions earlier than trying to add them to their communications infrastructure. UCC can region excessive stress on getting older networks, inflicting latency, lag, and infrequently community failure. UCC might be the future, however to reach that future, some companies could need to replace other features of their tech architecture.

    Scalability

    Scalability has long been a crucial situation linked to unified communications. although, now that the economic system is booming and corporations are growing, it's mainly critical that corporations equip themselves with communications options for you to proceed to serve them as they extend.

    unluckily, many business leaders harbor misconceptions involving scalability and unified communications. for instance, a whole lot of leaders assume that all communications options are infinitely scalable. here's most effective proper in theory; in apply, most techniques have higher limits on the number of devices they could service. corporations that put money into an answer with out realizing these limits will either suffer downtime or waste funds upgrading to a new device within the close future.

    Any time a company considers a new solution, it should steadiness its present needs with its future projections. within the case of unified communications, here is very true. The future of unified communications is upon us, and businesses should still be able to construct bridges to these integral technologies — or perish, on my own, on their deserted islands.

    Jackie is a content coordinator and contributor that creates exceptional articles for themes like expertise, enterprise, domestic existence, and education. She studied business management and is constantly constructing superb relationships with other publishers and the cyber web neighborhood .


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    Architecting Cisco Unified Communications Manager 12.5 – An Evolutionary Tale | killexams.com real questions and Pass4sure dumps

    Last week I was with many of our customers attending Cisco Live Barcelona. Barcelona is a wonderful example of a vibrant, contemporary city, the host of the annual Smart City Expo. Around the city, modern structures like Frank Gehry’s Golden Fish (El Paix) and the Museu Blau (Herzog and de Meuron) blend with traditional Catalan gothic architecture and Antoni Gaudi’s brightly colored designs, inspired by nature.

    Perhaps the most famous of Gaudi’s works is the Basilica de la Sagrada Familia. Work on the basilica started over 135 years ago. Construction has been continuous ever since, and today is approximately 70% complete. Work will continue until at least 2026. Unfortunately, Gaudi only lived to see the completion of one of the impressive towers. But following his death, the project was not abandoned. Successive architects, sculptors and other tradesmen have collaborated to continue towards his vision. Along the way, they have embraced modern construction techniques and materials. The addition of each new facade and tower, delighting visitors with new experiences and transforming the city skyline. I can’t wait to come back and see how it has changed on my next visit.

    As an engineer, this got me thinking about parallels with the products I look after. I am fortunate to be the latest engineering leader to have responsibility for Cisco Unified Communications Manager.

    Over the past 20 years UC Manager has evolved. It has built on its enterprise IP telephony and voicemail heritage, to accommodate new technology and new ways of working. Instant messaging and presence, mobility, telepresence, virtualization and cloud collaboration, and much more have all been embraced. As a result, UC Manager is trusted by over 200,000 organizations to deliver secure communication and collaboration capabilities for their people and teams.

    And this week, Unified Communications Manager got even better. Release 12.5 is generally available now.

    A key objective for us in this release was to simplify administration and reduce your total cost of ownership. It is packed with features to make administrator’s lives easier. Here are a few:

  • All Cisco Jabber and video endpoint* configuration can now be done directly from Unified CM’s administrator’s interface (no more XML files!).
  • You can manage Cisco Headsets* from Unified CM too, simplifying configuration management, inventory tracking, software upgrades, and more.
  • We reduced the time it takes to upgrade your Unified Communications Manager system by up to 50% with simple “one-touch” cluster-wide upgrades.
  • Provisioning new phones has never been easier with secure on-boarding, using simple 16-digit or QR codes.
  • (*NOTE: Video endpoint and Headset management need Unified CM release 12.5 SU1, available April/May 2019)

    Of course, we didn’t forget about end-users. We created a more consistent experience for extension mobility users. And we made Jabber mobile deployments more robust and feature rich. We also enabled interworking between on-premises Jabber IM&P and Webex Teams messaging. By the way – did you know that Jabber 12.5 also supports a new “Team Messaging Mode”? It means you can use Unified Communications Manager for enterprise calling, and connect to the Webex team messaging service for next generation business messaging.

    As in every release, we strengthen our security capabilities. We added elliptic curve cryptography support, granular controls for cipher management, encrypted instant messaging archiving, and several other enhancements.

    There are dozens of things we could talk about, but you probably get the point. Our strategy is to continue to provide outstanding on-premises solutions, at the same time as we aggressively develop our cloud portfolio. We know hundreds of thousands of you, our customers, depend on it!

    Cisco Unified Communications Manager 12.5 has had the most rigorous testing. It is the highest quality release for many years. I’m sure you are going to love it. But, like the planners, architects and engineers who are driving the City of Barcelona and the Sagrada Familia forward, we are not done yet! In fact, we are already planning our next release. We are going to jump straight to “release 14” (any guesses why?).

    While we are still early on in the process, we are thinking about greatly improving our user interfaces, more seamlessly integrating to our cloud services portfolio, and increasing scale. I should probably not share much more, as roadmaps are constantly in flux. However, I would love to hear what YOU would like to see us doing next. Leave me your comments below.

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    LED lighting and control system design considerations | killexams.com real questions and Pass4sure dumps

    Designers need to explore various approaches and requirements to lighting design as codes and standards are becoming more energy-conscious.

    Figure 3: A rendered example of parking lot lighting, with a brick walkway and large statues near a water tower for the City of New Orleans. Courtesy: Stanley Consultants

    Learning Objectives

  • Review lighting control design requirements.
  • Explore the IES Handbook and ASHRAE Standard 90.1.
  • Evaluate the modeling methods for lighting design.
  • As much as the previous generation of electrical engineers and lighting designers may hate to admit, the days of multilamp T8 or T12 fluorescent fixtures—with 6- to 8-ft on-center spacings, accent wall sconces, multilamp chandeliers, and wiring line voltage switches—are no longer the norm.

    The energy-conscious standards, such as ASHRAE 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings, International Energy Conservation Code (IECC), and California’s Title 24, have made it more difficult to consider specifying incandescent, most fluorescent, and high-intensity discharge (HID) fixtures in modern designs. The LED revolution also brings smart, plug-and-play-style lighting devices and control systems that minimize installation and commission time, resulting in a cleaner and smarter product for the client.

    The trade-off for this revolution is increased design times due to lighting-power density (LPD) restrictions per space, becoming more familiar with the various lighting control and networked systems offered by major manufacturers, and reviewing and designing to the applicable standards that many state and federal projects are now requiring.

    It can be a delicate balancing act between meeting the required foot-candle levels, staying under the watts-per-square-foot LPD limits using an appropriate fixture, using the appropriate driver size, incorporating the required controls, and finally showing this in a clear and concise manner on construction drawings so a contractor can decipher what it is you’ve tried to design. It is also an educational effort for installation contractors to verify that the fixture has the correct driver installed, as the fixture from the outside looks the same. It is no longer two, three, or four lamps that are easy to distinguish.

    Figure 1: Example of a schematic diagram and sequence of operation for lighting control in a private office that meets ASHRAE 90.1-2016. This figure was modified from an original Acuity Brands light system diagram. All graphics courtesy: Stanley Consultants

    Here are some general principles to follow when reviewing requirements for a new construction or renovation lighting design project:

  • Most spaces now require more lighting controls than a simple on/off toggle switch. There are many control systems available that make design and installation easier.
  • To meet the LPD limits of the new ASHRAE 90.1 edition, IECC, or California Title 24, you’ll most likely want to use LED fixtures instead of more energy-intensive lighting options.
  • Overlighting a space can be as undesirable as underlighting a space. Aim to be within +/-10% of the target foot-candles typically found in the Illuminating Engineering Society (IES) Lighting Handbook.
  • With so many options for LED lighting fixtures, even obscure architectural fixtures can be used and still meet codes.
  • Minimize glare from intensive computer screen areas by looking at indirect and direct fixtures with shielding on the downlight side of the fixture.
  • Clients appreciate rendered 3-D images of their new facilities showing the lighting within. With minimal effort, adding some small details and color can look impressive. Three-dimensional-rendered models are not an option for all consultants.
  • Standards driving design

    Two main standards driving the design of lighting and lighting control systems are the IES Illuminating Handbook (2011) and ASHRAE 90.1, Chapters 8 and 9 (2007, 2010, 2013, 2016). For military projects, the Unified Facilities Criteria (UFC) documents, such as UFC 3-530-01: Interior and exterior lighting systems and controls, with Change 3, also show requirements for what is expected in facilities. Various state, city, campus or client-provided standards also must be considered.

    The 2011 version of the IES Handbook provides recommended foot-candle levels for various indoor and outdoor spaces. It’s a great source for everything from a dormitory bedroom to an outdoor mechanical yard at a manufacturing plant. Unless the client has their own required foot-candle levels spelled out, they typically reference this as a source for lighting levels.

    ASHRAE 90.1, Chapters 6, 8, and 9, were developed to drastically reduce overall building energy usage by imposing strict controls to HVAC, lighting, and power.

    For lighting, ASHRAE 90.1 provides required LPD limits and control schemes for several common space types. Note that ASHRAE 90.1 has four versions listed above because state adoption of the standard varies and may reference one of those versions that are referenced. Each version becomes more strict, lowering LPD limits on spaces and increasing control requirements all in the name of energy savings.

    If a building is pursuing LEED certification, the energy-model credit specifies a percentage lower than what is allowed in ASHRAE 90.1. To help cut building-wide energy usage, lighting designers can attempt to limit their LPD as much as possible by using more efficient fixtures to contribute to overall energy savings. As the LEED certification level goes up, so does the energy savings required in the building-wide energy model. For example, when ASHRAE 90.1-2007 applies, one could comfortably use typical multilamp 28-W fluorescent tube fixtures, line voltage switching, and other basic controls and still meet code. The 2010 version introduced automatic receptacle controls, drastically cut down the LPD limits, added occupancy- and daylight-sensor requirements, and added bilevel switching requirements, effectively expelling line voltage systems. These added control measures force the designer to completely reimagine how to control lighting.

    Figure 2: A rendered example of a locker room in a U.S. military gym facility. Adding lockers gives a more accurate calculation and visualization of the space.

    Lighting control design requirements

    The following is an overview of the basic lighting control requirements and devices to consider during design and is by no means an exhaustive code review. There are many exceptions to certain control requirements including 24-hour operation and security or safety concerns, among others. Exceptions should be cleared with the client prior to removing them from the design. Reference Chapters 6, 8, and 9 of ASHRAE 90.1 for more information, exceptions, and sequences of operation for specific space types. The control requirements and devices are:

  • Occupancy sensors are mounted in the ceiling or on a wall switch, available in passive infrared (PIR) or “dual-technology,” which incorporates PIR plus either a microphonics or ultrasonic sensor. PIR is limited to line-of-sight movement only, so it is not a good choice in areas with lots of obstructions like tall cubicle walls, large equipment, or restroom stall doors. Microphonics uses a tiny microphone to detect sound, while ultrasonic sensors emit high-frequency sound waves to detect motion. The sensors operate by turning on the lights in the space upon occupancy to a level determined in ASHRAE 90.1 and turning them off automatically after 20 to 30 minutes when unoccupied. Most space types in a commercial application, aside from mechanical/electrical rooms, require occupancy sensors.
  • Daylight sensors are mounted in the ceiling, ideally with lights between the sensor and a window. They operate by taking a reading of total available light in the space. Throughout the day, sensors dim the artificial lights to where the artificial light level plus the sunlight level in the space meets the programmed foot-candle either at the work surface (generally 30 in. above the floor) or on the floor, depending on space usage. Per the 2016 version of ASHRAE 90.1, any space with windows or skylights and total lighting wattage in the sunlit area greater or equal than 150 W requires daylight-sensor control.
  • Automatic receptacle control was introduced in ASHRAE 90.1-2010 and consists of a relay pack that controls 50% of the electrical receptacles in the space. Let’s consider two different ways how a private office with four duplex receptacles is controlled:
  • Two full duplex receptacles will be controlled.
  • The bottom (or top) receptacle on each of four duplex receptacles is controlled.
  • Controlled receptacles shall be marked with the International Power Symbol per NFPA 70: National Electric Code (NEC), Article 406.3 (E). The receptacles can be tied to the operation of the occupancy sensor in the space or they can be incorporated into a scheduled time-of-day shutdown. In the case of occupancy sensor-controlled receptacles, they turn on upon occupancy and turn off after 20 to 30 minutes of being unoccupied. These receptacles are a good choice to plug in noncritical loads, such as a desk lamp that may inadvertently be left on. (per ASHRAE 90.1-2016). A best practice is to bring this up early in the design process so clients are not blindsided.
  • Bilevel lighting control is a method of having at least two separate lighting-output levels for a space, one of which may be automatic upon entry while the second is manual. A smart switch with full dimming capabilities also meets this requirement, provided the automatic operation is no higher than 50%. When an occupant enters the space, the lights come on to 50% output automatically. If the occupant wants full light output, they manually hit the second-level button (or dimmer buttons) on the wall switch. This requirement is in place to prevent wasted energy on someone stopping in briefly and leaving immediately. For example, a janitor closet, where the janitor would open the door, grab a broom and leave, triggering the occupancy sensor. This requirement can be programmed into the system or be a pre-installed option on a relay pack.
  • Automatic HVAC shutdown is another requirement of ASHRAE 90.1 in Chapter 6. Typically provided on a building management system (BMS) time-of-day schedule, another option is to integrate HVAC operation in spaces with lighting control occupancy sensors. Many lighting control systems offer options for this integration. If the lighting control system sensor is used, the lighting controls notify the HVAC/BMS to turn on in the space. When the occupancy sensor times out after 20 to 30 minutes, the signal is sent to the HVAC/BMS to turn off or lower HVAC to the space, saving energy from running HVAC in an empty room for extended periods. There are various interface protocol options, and the choice will depend on how the mechanical BMS is set up. A simple contact closure hard-wired to the BMS can be used from a per-room relay basis, or the preferred method is to use a BACnet (or other) interface module that resides on the lighting control system network that converts the signal to the correct protocol for the particular BMS. Then logic is used for input into the spaces for HVAC control. Always confer with your mechanical engineer on the project to confirm his or her preferred protocol. This strategy is typically used in most occupied spaces like offices, conference rooms, control rooms, and break rooms.
  • Figure 3: A rendered example of parking lot lighting, with a brick walkway and large statues near a water tower for the City of New Orleans. Courtesy: Stanley Consultants

    Once most states upgraded from the ASHRAE 90.1-2007 energy standard to the 2010 edition, the lighting industry produced more intelligent lighting control systems that met the new standard. Several manufacturers offer a base control system with 0 to 10 V-enabled dimming drivers for the fixtures and daisy-chained Power over Ethernet (PoE) Category-5e (CAT-5e)-enabled control devices including occupancy sensors, daylight sensors, and wall switches; all controlled by a small dimming relay pack mounted above the ceiling. These connected devices can all operate with minimal or no preprogramming.

    Various so-called smart-switch options replace 3- and 4-way line voltage switching, as multiple zones can be controlled within the same switch instead of having to wire multiple line voltage switches. These switches can include occupancy sensors, dimming buttons, and programmable scene buttons or they can even be a small graphic touch screen, which allows multiple scenes with added control options available. The smart switches are typically powered from the room controller through the category cabling, with devices containing 2-RJ45 ports. The touch-screen option may require an additional small power supply, depending on the manufacturer.

    With these system devices, we can easily incorporate HVAC and automatic receptacle control all within the same system. Need emergency lighting fixtures via an NFPA 110: Standard for Emergency and Standby Power Systems generator or UL 924: Standard for Emergency Lighting and Power Equipment–listed lighting inverter system? There’s an emergency relay pack for that, too. Each space can operate alone on its own network or be tied together with several rooms. With just a few additional networking devices available from the lighting control manufacturer, the entire building’s lighting control can be connected on a single network and feed back to a central control computer. Depending on the system options chosen, even a smartphone with protected credentials can control each individual light in an entire building.

    Some manufacturers are replacing 0 to 10 V dimming cables with CAT-5e or CAT-6 cables and powering the lights and dimming with the same CAT cable. The possibilities are virtually unlimited and can be client-driven, resulting in a totally customizable system that meets client needs. Since most installations will not require overly complicated controls, these plug-and-play-style systems minimize contractor wiring and commission time.

    Figure 1, for example, shows a schematic of how a private office could be interconnected to all the smart devices with CAT-5e cable and using 0 to 10 V dimming controls.

    Lighting–power density and foot–candles

    LPD, watts per square foot limits are provided by ASHRAE 90.1 and provide a framework of how many watts per square foot a fixture can use to light a space of a certain size and type. The LPD ranges vary from very low for a janitor closet or storage room to much higher for a classroom or workshop. The limits are generally met easily with LED fixtures.

    Although ASHRAE 90.1 offers limits on specific space types, compliance operates on the entire building. The designer has the option to use the building method, a single LPD for the whole building based on the type of building, or the space-by-space method using different LPD limits for each space type to calculate the total LPD.

    The designer can use the ASHRAE 90.1 Interactive Compliance Form to incorporate the LPD limits to a total of allowed lighting watts for the building. Despite which method is used, if the entire building’s actual lighting LPD level is lower than the allowed LPD, the designer is compliant. If using the space-by-space method, there’s no reason to worry if one or two rooms are slightly over the limit. It is common to be 25% to 40% or more under the allowed watts for a large project with many different space types. This percentage savings below ASHRAE 90.1 becomes much more important when designing for LEED projects, as previously discussed.

    Foot-candles are a measure of illuminance at a chosen horizontal plane in a space. Three main calculation plane heights we see are at the floor surface for corridors and lobbies, at 30 in. for the desk level in office space, and 42 in. for mechanical space. Many different calculation planes are required for different space types and are described in the IES Handbook.

    Figure 4: A rendered example of a classroom in Texas, complete with desks, a podium, and an instructor. Lighting was direct/indirect fixtures with recessed can lights around the outside. This room had multiple control options and scenes for different teaching applications. Courtesy: Stanley Consultants

    Choosing the right lighting fixture

    There are many types of lighting fixtures and options to choose from to meet the needs of a space. Consider these factors when choosing fixtures:

    Communication: It’s important to communicate with the mechanical engineer regarding the design temperature of an industrial space, especially at the ceiling, as heat rises. Some industrial fixtures have different temperature ratings based on the distance they’re suspended from the ceiling. It’s also important to consider how the space will be used to avoid any possible damage to the fixtures.

    Also consider wire guard covers for the industrial areas and vandal-resistant lens covers or housings for the more public options. Typically, an industrial-style or outdoor fixture will have these options available as an add-on.

    Location type: If the space is considered a hazardous location, it may be necessary to have an appropriately sealed and UL-listed fixture for the classification of these types of spaces. Many manufacturers offer these rated fixtures, but they may be more expensive.

    Ceiling type: Is it a drop-in acoustic tile ceiling or gypsum board? The fixture you choose should be not only appropriate for the space but should minimize installation costs for a contractor. Installing recessed fixtures in gypsum board ceilings can increase construction costs considerably for a larger project. Try to choose a surface-mounted or suspended fixture if you have gypsum board ceilings and the space doesn’t need recessed fixtures. An exception to this rule might be in restrooms, where you want a clean design. Recessed linear strip fixtures are a good idea in restrooms for this reason.

    Consider the LED Kelvin temperature rating (K-temp): This is a measure of the light’s color output, from a warmer orange to cooler blue with daylight at the end of the spectrum. Some examples of temperatures in lighting design are warmer high-pressure sodium fixtures (typically 2000 to 2200 K), typical office setting (3500 to 5000 K), and a cooler blue/white 6000+ K. Most LED fixtures have several K-Temp packages for the same fixture.

    Avoid mixing K-Temps and color rendering index (CRI) ratings, since both can cause different effects regarding how items appear in color in a building unless the application calls for it. It can be disorienting to walk from a 4000-K office into a hallway that’s 2700 K and then into the kitchen where it’s 5500 K. If the project is a partial renovation, consider matching the K-Temp to what is already installed to be consistent.

    Because of all the current lighting options, it’s more difficult to consider a contractor’s substitutions or other lighting options from another manufacturer. Previously, a two-lamp fluorescent was standard regardless of the manufacturer. Now it becomes more essential to list minimum lumen output and maximum wattage input in a fixture schedule. With strict LPD limits, it is imperative for manufacturer representatives providing substitutions to use due diligence and light modeling software to prove their proposed fixtures meet or outperform the basis-of-design fixtures.

    Three-dimensional modeling design

    Three-dimensional modeling of the building and spaces is crucial to confirming a design is accurate and code-compliant.

    There are a lot of options for light modeling software. Most major manufacturers have photometric files for each of their fixtures, which can be downloaded and imported into your chosen software. These files represent how a fixture looks and performs in a real-world installation.

    The key to making a great 3-D design is adding in representations of actual objects in the space:

  • Large equipment like tanks, generators, switchgear, pumps
  • Stairwells
  • Equipment racks in communications rooms
  • Lockers and large shelving
  • Restroom stall doors and shower curtains.
  • This is important because, while the design of an empty room may meet code, there could be dark areas once the space is populated with actual equipment and obstructions. Maybe the initial design failed to account for where the rows of motor control center sections were going to be placed, and now lights are installed directly above the equipment, rendering the design ineffective for the light placements. These problem areas are avoided by modeling planned obstructions if budget allows (Figure 2).

    Consider the fixture light-loss factor (LLF) when modeling. All lighting fixtures have a drop-off of applicable light output over time due to dirty lenses, reflectors, ballast or LED driver depreciation, and actual lamp-source failure. LED drivers and lamps tend to have better performance toward their end of life than their predecessors. For a long time, a recommended LLF was 0.7 (70% of rated light output), but this was based around less-efficient fixtures and lamp/ballast sources with shorter life spans. When we model lighting designs, we want to model for the worst-case scenario. The worst case for light fixtures is at their end of life. The designer can adjust the LLF of the fixtures in modeling software so the output is reduced.

    By adding color and predesigned objects to specific areas of the modeled environment, the model can impress clients with actual reflectivity values. Adding something as minimal as green grass color to an outdoor lighting project can make a big, gray, blocky model more realistic. For example, add yellow-colored generators, safety-yellow equipment pads, school-colored lockers, desks in a classroom, a wood floor on a basketball court, or people standing around to show scale. These make a difference and clients appreciate the presentation.

    Figure 5: A rendered example of a secure campus with outer perimeter security lighting. Objects include a guard house at the lower left with barricades and floodlights, support facilities, and large storage tanks. Green grass and blue dumpsters were added for color and a car was added to show scale. Courtesy: Stanley Consultants

    Approaches to control systems and construction drawings 

    The easiest way to convey how a lighting system is designed to a contractor or a cost estimator is to standardize how to show these systems.

    As different clients and projects require different levels of detail, there are a couple methods that seem to work well.

    One approach is to provide a table with different sequences of operations (SO) and assigning room numbers to the proper SO section. For the plans, only show the lights, smart switch locations, and occupancy/daylight-sensor locations. This approach holds the contractor responsible for providing the appropriate relays and networking devices to achieve the assigned SO per room based on the selected template.

    A challenge with this approach is that it makes it difficult to provide an accurate cost estimate. If specifications aren’t tight enough, this may invoke several information requests from the contractor, or a change order. As a result, the engineer may be forced to count all the devices, prolonging the process, which also adds to the budget.

    Another approach uses the same plan-drawing approach, showing only the major devices per room. However, this design is based on an actual lighting control system available from a major manufacturer. All the devices necessary for the design could be accounted for in a table broken down by room on one axis and by device on the other axis. Provide modified typical wiring-schematic template plans in details for the various rooms in the project and assign the applicable room numbers to each schematic. Reference Figure 1 for an example.

    These schematic plans show an example room and its associated SO with the required relays, cabling types, and connections to the control devices and appropriate switches. This information is helpful for cost estimators and contractors to visualize the parts and labor that will be required for the project. Depending on the client, the designer can provide part numbers of the basis-of-design manufacturers or provide function name only (for example, dimming relay, wall switch with PIR, etc.). To avoid sole-sourced products, provide acceptable product options from different manufacturers that would be considered equal in performance and include notes allowing substitutions with prior approval to bid, providing the alternative system meets the SO for the spaces shown.

    Designers want to avoid mistakes and try to think of everything that could go wrong, but it’s hard to learn without experiencing the process a few times.

    For example, a common design approach in restrooms is to put wall-wash lights in the ceiling along the walls above sinks and toilets. In a recent project, 4-in.-wide LED strip fixtures were recessed in the acoustic tile ceiling along the walls. The owner was not happy with the lighting in the restroom because he could see the wobbly, uneven tile work on the walls. The solution was to move the lights away from the walls to the next T-bar. In this case, it wasn’t technically the lighting that was the problem, but the tile contractor’s work. It’s something to consider if there is intricate tile work in restrooms or on other walls.

    LED lighting and control systems are evolving and becoming smarter each year. Designers need to stay current on lighting design options and methods while being code-compliant. Codes are becoming more stringent and software design is offering more options for deliverables. Coordinating with mechanical engineers is important because the systems can now be interconnected. Tighten up fixture schedules and specifications to avoid headaches entertaining substitutions. This all costs designers time, but the product is a long-lasting system that can look great and make clients happy.

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    Choosing the right unified communications system for you | killexams.com real questions and Pass4sure dumps

    The unified communications (UC) market offers a variety of products and services that target organizations of all sizes, from small businesses to large enterprises. Thanks to the continuously growing and demanding telecommunications market, the unified communications adoption rate has increased dramatically over the last five years, opening new opportunities for existing and new unified communications vendors.

    With so many vendors, options and features, choosing the right unified communications system for your enterprise can be difficult. This article will compare the top vendors in the UC market based on four important purchasing criteria.

    Evaluating end-to-end services

    Only a few vendors actually offer end-to-end unified communications services, and yet those vendors who don't offer end-to-end services should still be considered in your buying decision. An end-to-end solution usually consists of the following elements:

  • IP phones
  • Network infrastructure, including switches, routers and firewalls
  • UC server or hardware platform, including rack server and hardware appliances
  • Applications or services, such as a softphone, call manager server, instant messaging (IM), presence server and contact centers
  • End-to-end services can offer organizations significant savings in upfront costs since they are able to negotiate greater discounts for hardware, software and support services. On the other hand, many organizations feel an end-to-end vendor will lead to vendor lock-in, leaving little or no space for alternative services and upgrade paths in the future.

    Choosing the right unified communications system is becoming more complex as vendors are continuously enhancing their solutions and introducing new features.

    These concerns, to an extent, might be valid. However, an end-to-end vendor solution does not always stop the organization from seeking alternative vendor solutions for future upgrades or expandability needs. If your organization is considering an end-to-end solution, vendors such as Cisco Systems, ShoreTel and Alcatel-Lucent offer end-to-end UC and infrastructure services.

    Cisco's enterprise UC service includes its flagship call-control platform, Cisco CallManager accompanied by Unity Connection for messaging and voicemail, an IM and presence service, and Expressway server. Cisco also offers a range of IP phones, switches, routers and VPN firewall devices to cover all UC services for the intranet and extranet or mobile users.

    ShoreTel's end-to-end UC service includes its newly updated Connect ONSITE, the main call-control software, along with a desktop app for Web conferencing, IM and presence services; a mobility app for desktop-to-mobile extension; Connect Director, a complete configuration and management of the ShoreTel infrastructure; and Connect Edge Gateway for remote access for mobility clients and IP phone devices. ShoreTel's key ingredient for the platform is simplicity, making it easy to configure and maintain the whole UC infrastructure.

    Alcatel-Lucent's unified communications system consists of the OmniPCX Enterprise Communication Server, the main call-control server that offers numerous features. Additional services include OpenTouch Multimedia Services -- which include presence, IM and video conferencing -- and OpenTouch Session Border Controller, used to connect remote clients and terminate session initiation protocol (SIP) trunks.

    Alcatel-Lucent also offers OpenTouch Business Edition, a UC solution targeting small to medium enterprises with up to 1,500 users.

    Organization size a key consideration

    Your organization's size is a key factor to selecting the right UC service. Each vendor's UC platform offers support for a specific amount of users and is usually designed around these limitations, which makes it very important to decide on a UC service that offers the right capacity for your organization.

    Small to medium-sized businesses (SMBs) can be considered the luckiest, as they have the flexibility to select pretty much any UC solution. Here are some unified communications systems targeted toward small to medium-sized organizations:

    Unify's OpenScape Enterprise Express is designed for organizations with up to 200 users, while  OpenScape Business bumps the user support up to 1,500. Both products are highly capable of providing full UC services, including voicemail, IM, presence and mobility.

    Alcatel-Lucent offers OpenTouch Business Edition -- a multimedia collaboration solution for organizations with up to 1,500 users. Alcatel-Lucent is also one of the few vendors with end-to-end solution coverage that includes the network infrastructure.

    ShoreTel's Connect ONSITE is a unified communications system that offers simple deployment and ongoing administration. Connect ONSITE supports up to 20,000 users, but also targets SMBs.

    NEC's UNIVERGE 3C can easily cover SMBs, thanks to its 30,000-user support. UNIVERGE 3C is a complete UC solution suitable for organizations that are experiencing continuous growth. UC services such as voicemail, IM, presence, video conferencing and mobility are tightly integrated into UNIVERGE 3C and its UNIVERGE 3C UC Client. The UC Client interface and functions are almost identical across all platforms, making it easy for users to work on laptops and mobile devices.

    UC services for big businesses

    Larger organizations are a bit more restricted in their choices, but still can select between vendors such as Cisco, Avaya and Microsoft.

    Cisco's Unified CallManager (CUCM) can support more than 100,000 users, while its Unity Connection messaging platform supports up to 20,000 users. Cisco's IM and presence service can scale up to 45,000 users in a CUCM deployment or 75,000 users in a non-CUCM design.

    Avaya's Aura Communication Manager can initially support 36,000 SIP endpoints, but depending on the deployment design, this figure can jump to 250,000 users or 350,000 SIP endpoints, making it an interesting solution for large multinational organizations seeking a single UC solution. Similarly, Avaya's Aura Presence server begins its support with 16,000 users and is expandable to 250,000 SIP users; however, the Avaya Aura Messaging server can support up to 20,000 users.

    Microsoft is another big player capable of delivering UC services to organizations with more than 100,000 users, thanks to its Skype for Business Server -- a highly scalable solution comprised of Microsoft servers and third-party, Microsoft-certified peripherals, such as voice gateways and SIP phones.

    Alcatel-Lucent's OmniPCX Enterprise Communication Server can support up to 250,000 users. Unify's OpenScape Enterprise Voice platform scales to support up to 500,000 users, making it one of the largest deployments.

    On par with Unify's OpenScape, Mitel's MiVoice MX-ONE UC solution can also support up to 500,000 users. Mitel's UC suite includes MiCollab, responsible for presence, messaging and mobility; the MX-ONE Media Server, a software media gateway; and hardware media gateway units.

    Virtualization platforms and high availability

    Unlike VoIP PBXs, which mostly rely on proprietary hardware devices, UC solutions primarily run on server-based hardware, which means redundancy and high availability are key factors for minimizing service downtime.

    Thankfully, vendors also understand this importance, which is why most vendors offer support for virtualization environments, such as Hyper-V and VMware, but also multi-server deployment models that provide load balancing and an increase of capacity. While all vendors support multi-server deployment models, when it comes to virtualization it's a different story.

    If your organization works with both Hyper-V and VMware virtualization platforms, then selecting the right UC solution might be easier. On the other hand, some enterprises have strict policies that force the use of a specific virtualization platform.

    ShoreTel's Connect ONSITE runs under the Windows Server operating system supporting both Windows 2008 R2 and Windows 2012 R2 editions, and both Hyper-V and VMware virtualization platforms. 

    NEC seems to follow a similar philosophy, as its UNIVERGE 3C system runs under the Windows server operating system, supporting Hyper-V and VMware virtualization platforms.

    Alcatel-Lucent's OmniPCX enterprise service is based on the Linux operating system and delivered on the VMware ESXi virtualization platform. Unify's OpenScape Enterprise and Cisco's CallManager also run under the Linux operating system and support the VMware virtualization platform.

    Mitel's MX-ONE UC solution uses standard hardware servers running the Linux SUSE operating system, but also supports VMware virtualization. Avaya's Aura Communication Manager runs on Red Hat Enterprise Linux and supports the VMware virtualization platform.

    Finally, Microsoft's Skype for Business is offered under the Windows 2012 R2 operating system and is best run in a standalone environment rather than a virtualized one.

    Vertical market software offerings and applications

    A UC platform is much more than just a smart VoIP telephony system. It's a system that enables organizations of any size to enhance their communications by allowing multiple forms of collaboration methods, such as phone, video and IM, no matter where they are around the world.

    At the same time, the UC platform helps organizations save time and resources, thanks to advanced services such as integration with enterprise resource planning (ERP) systems, customer relationship management (CRM) software, and other critical systems.

    Vendors recognize the value that customers want out of a unified communications system, which is why many vendors offer application program interfaces (APIs) that allow organizations to build custom software to interface with their UC solution. Other vendors even develop software for specific vertical markets.

    ShoreTel is a prime example, as it offers several applications that enhance its Connect ONSITE platform by introducing extended functionality for many different industries. Here are some examples of the offerings:

  • ShoreTel Hospitality Connector, recommended for hotel customers, allows external systems to initiate username and call-handling changes to ShoreTel phones.
  • ShoreTel Outbound Campaign IVR creates automated calling campaigns for different purposes.
  • ShoreTel Emergency Notification is for organizations that want to coordinate in-house response during emergency situations.
  • ShoreTel Call Recorder is for any organization requiring call recording, storage and management.
  • Avaya's Engagement Development Platform provides organizations with the ability to integrate their applications with the Aura Communication Manager platform, extending their value and functionality. More information on Avaya's Engagement Development Platform can be found on Avaya's website.

    Alcatel-Lucent has a number of applications that many organizations will find necessary for their OmniPCX Enterprise Communication Server or OpenTouch Business Edition server:

  • OmniPCX Record Suite is relevant for financial services, healthcare, hospitality, public safety organizations and more. It provides a complete tracking solution for customer interactions via call recording, screen capture and coaching capabilities.
  • OpenTouch Notification Service is targeted for healthcare, education and high-risk industries. It aggregates alarms from various systems, such as nurse calls and fire alerts, and notifies the most appropriate person or group.
  • Soft Panel Manager is designed to help supervisors identify problems and optimize contact centers and customer service by displaying data and call statistics.
  • Mitel offers a limited amount of applications, but their functionality extends to cover many industries:

  • Mitel CMG BluStar Web is a presence and activity platform that allows users to perform smart-search directory services, click-and-dial, manage call routing preferences based on their calendar and more.
  • Mitel InAttend provides a multi-featured attendant solution built on open standards to allow integration with various communications servers.
  • NEC offers a healthy number of applications that aim to extend the UNIVERGE 3C UC platform and are worth taking a look at:

  • UNIVERGE 3C for Hospitality provides hotels with numerous advanced services and features.
  • Call Accounting for UNIVERGE 3C helps eliminate phone abuse, toll fraud, provides detailed reporting, allocates call charges to departments, plus much more.
  • UNIVERGE Appointment Reminder helps reduce missed customer appointments by automatically reminding them, helps market new products and services, plus more.
  • More information on all these vendors' applications is available on their respective websites.

    Finding the right unified communications system for you

    Choosing the right unified communications system is becoming more complex as vendors are continuously enhancing their solutions and introducing new features. Be sure to make the right decision based on which criteria are important for your organization.

    Enterprises prioritizing end-to-end solutions will most likely prefer larger vendors such as Cisco, Alcatel-Lucent, ShoreTel, Avaya or Microsoft. Smaller enterprises would most likely benefit from products like Unify OpenScape, NEC UNIVERGE or ShoreTel Connect ONSITE. 

     



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