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Extending Real-Time Business Communications with VoIP Over ...

  1. 1. Brochure VoIP Over Wireless Networks Extending Real-Time Business Communications with VoIP Over Wireless Networks
  2. 2. The Future of Mobility is particularly important. The integration of data and voice keeps workers more connected and informed as they perform their Happening Now core tasks, and helps them avoid unproductive, back-and- We are entering a new era of business communications—one forth trips to traditional telephones, computer terminals, in which employees can work and collaborate efficiently no record rooms, storage facilities, etc. Similar benefits can be matter where they happen to be. realized in standard office environments by technical support staff and other mobile employees who depend on information Two key trends are driving this evolution. The first is the and collaboration in performing their primary functions. broad migration to Voice over IP, a technology that has moved beyond the early adopter phase and is now being deployed In planning deployments, it is important to realize that wireless extensively by mainstream users. The second is the transition technologies and standards are evolving rapidly. Implementers to wireless mobile computing. Notebook sales are increasing must understand both the strengths and limitations of current more than three times faster than desktop sales, and technologies so they can deploy wVoIP selectively and businesses worldwide are deploying wireless local area intelligently to maximize return on investment and lay a networks (WLANs) to support their mobile employees. scalable foundation for future growth. Not surprisingly, companies want to extend the value of these investments by delivering voice communications over their The Challenges of wVoIP wireless IP networks (wVoIP). This technology represents the Voice is a demanding application. It requires near-continuous ultimate convergence of voice and data for mobile users, and network transmission and very low packet loss to avoid laten- opens the door to breakthrough advances in collaboration cies (gaps in communication) and “jitter” which can impact and productivity, including: clarity. Today’s wired network technologies have evolved to • Complete employee mobility with office anywhere capabilities, meet these needs. They offer plenty of bandwidth, along with quality of service (QoS) protocols that allow voice transmissions • Unified management of all communications (voice, email, to be scheduled and prioritized, so quality is not impaired by IM, etc.) across all devices (notebooks, PDAs, cell phones), less sensitive network traffic. With today’s wideband voice • Dramatic reductions in cellular and conferencing costs codecs and a well-designed network, voice quality can be within the enterprise, and eventually beyond. significantly better than that of traditional desktop phones. Today’s wVoIP solutions are already delivering substantial Voice transmission over wireless networks is more challenging. value in many environments, and wide adoption is being seen Current standards-based WLANs have less bandwidth in industries such as healthcare, manufacturing, retail and than wired technologies and solutions for prioritizing and other sectors in which mobility and information flow are scheduling traffic are less evolved. Mobile usage introduces additional challenges. As users move out of their offices into 2
  3. 3. hallways and conference rooms, they may need to interface 1. Begin with small pilot deployments to define your with the network through several different wireless access solutions and measure value in your particular points. Quick network handoffs are required to allow environment. Many businesses start by delivering continuous communications and avoid dropped calls. VoIP services to desktop PCs over their wired network. Deployment is simpler, quality is more predictable, and These challenges are not insurmountable and well-designed wired VoIP establishes a foundation for wVoIP. wVoIP solutions targeting appropriate usage models can deliver excellent value today. Meanwhile, Intel is working 2. Consider usage models carefully, as they can extensively with industry leaders and standards bodies to dramatically impact network requirements. improve bandwidth, QoS and roaming over standards-based • Notebook users typically need WLAN connections only wireless networks. A key focus of these efforts is to maintain in discrete and well-defined areas: offices, conference backwards compatibility with existing standards so businesses rooms, etc. can deploy now and extend their solution cost-effectively as standards and technologies continue to evolve. • Handset users are likely to roam during use, so you may want to extend WLAN coverage to hallways, stairwells, Building Successful wVoIP elevators, etc. (For extensive roaming, such as between subnets in a campus environment, you may need to Solutions consider proprietary technologies for near-term deploy- A typical VoIP solution is shown in Figure 1. The PBX, router, ments.) Despite the increased requirements, handsets directory and authentication elements are basically the same, can deliver substantial value, especially for workers who regardless of whether voice services are delivered over a rely on short conversations within contained areas. wired or wireless network. The challenge of wVoIP is in Handsets are also ideal for push-to-talk applications, designing the wireless network to support consistent and which enable instant connections, and are proving their acceptable voice quality. To accomplish this, wireless access worth in a variety of fast-paced work environments. points must be deployed with sufficient density and range— and with appropriate feature sets—to meet user expectations. • Voice-activated badges offer a third alternative that keeps Priorities will vary widely among businesses. The following both hands free for other activities. Service technicians, high-level suggestions can be useful in understanding basic medical personnel and others can make calls without challenges and solutions. losing focus or interrupting their work. net er Sub Serv us ter mp Ro u Ca or y ect Dir rver S e r X rve ture 2.1 Se ruc 80 tion ast net ca Infr nti t ne ss rele int ce Sub the ub Wi s Po Voi Au NS es LA A cc n e m pus PP ho Ca X lili ties I PB pab ss top Ca PC rele int Lap oIP Wi s Po s t hV Ac ce Wi e on rt Ph S ma ss rele int on e Wi s Po Ph es Fi A cc Wi A PD Figure 1. An affordable, standards-based wVoIP solution based on Intel products and technologies can be scaled flexibly to support a wide range of users and business processes. It can also be integrated seamlessly with wired VoIP and traditional circuit-switched voice solutions. 3
  4. 4. Better Value Through Standards- 3. Explore the advantages of dual-mode client Based Solutions devices. Handheld devices that support both wVoIP and cellular communications are available now and vendor Standards are evolving rapidly. Consider the following stan- support is increasing rapidly. Employees can carry a dards for current deployments, and monitor developments single device and take advantage of the best and most carefully so you can optimize your wVoIP investments as technologies and standards change. affordable coverage available, both within and beyond the enterprise. Wireless-enabled laptops can also be equipped with cellular network adapters for dual-mode operation. Current Although seamless cellular-to-wVoIP roaming is several • IEEE 802.11a/b/g defines three transmission protocols. years off, a number of service providers are looking at 802.11a offers higher bandwidth and more channels (but alternatives such as one-touch call forwarding, which a shorter range) than 802.11b, which is supported in most will help users reconnect very quickly when moving currently deployed networks. Devices that support all between networks. three protocols provide more total bandwidth and greater flexibility in network design. 4. Look for devices that support the latest wireless • IEEE 802.11i supports enterprise-class security solutions, standards. If you choose to take advantage of non- using standards-based authentication and encryption standard protocols for advanced QoS and roaming, protocols. make sure your vendor offers a cost-effective migration path to next-generation, standards-based solutions. • WME is a pre-release of the future IEEE 802.11e Quality of (For more information on standards, see the sidebar, Service specification (see below). Look for devices that are Better Value Through Standards-Based Solutions.) software upgradeable to the future specification. 5. Test thoroughly under real-world conditions. • Session Initiation Protocol (SIP) relates to the VoIP applica- Quality and roaming expectations may vary widely tion rather than the network, but is important to optimize interoperability among current and future VoIP devices. among users, so make sure your test populations reflect your deployment targets. User densities may also vary • IP Multimedia Subsystems (IMS) provides greatly enhanced dramatically, and can have a substantial impact on service access and mobility across diverse networks, network requirements. A design approach that delivers including wired, broadband wireless and cellular. Though excellent results in a small conference room, for example, unlikely to impact your current wVoIP deployments, the may be inadequate for a larger conference room, a move to IMS is already beginning for many major carriers cafeteria or a convention hall. and service providers, and can be expected to continue throughout this decade. Future • IEEE 802.11e will support quality of service via prioritized traffic and transmission scheduling. • IEEE 802.11r will support enhanced roaming by enabling faster tradeoffs among wireless access points. • IEEE 802.11n will deliver increased bandwidth (targeting up to 100Mbps). • IEEE 802.16d/e (WiMAX) will enable manageable, high-bandwidth wireless communications across longer distances (up to 30 miles). Fixed 802.16d networks are beginning to be deployed now by service providers world- wide to provide last-mile broadband access. WiMAX is likely to become a pivotal technology for delivering data and voice services in undeveloped regions. It may also become a popular alternative for metro area voice and data networks and for campus-to-campus links. 4
  5. 5. Figure 2. Intel is working with leading communications vendors to deliver Converged Application Platforms that deliver a broad array of networking functions in a single device. This can dramatically simplify integration and management of wVoIP solutions for small and medium size businesses. ss cce Na e WAdevic e er vic erv S de n S ed all Qo a tio anag m) Fir ew plic M for ter PN Ap rrier Plat ou PT V R A (Cavices r N Se et er n Eth itch w S ATA vice n De n ctio -Fu Multi gle, a Sin s in –Fi AP ea ture Wi of F on g rati Inte nts Clie End-to-End Solutions Using Intel Intel® building blocks also support traditional circuit-switched communications, so businesses have considerable flexibility Products and Technologies for integrating VoIP into their existing environments. The mod- VoIP and wVoIP are truly transformative technologies, and Intel ularity of these systems is key to enterprise value, enabling is combining its compute and communications expertise to businesses to scale performance, capacity and functionality enable comprehensive solutions targeting businesses of all as needs and technologies evolve through cost-effective and sizes. These efforts include integrating optimized VoIP support non-disruptive board and software upgrades. pervasively across all product lines, and working extensively with hardware and software vendors and service providers to Optimized VoIP Solutions for deliver unified solutions at every level, from back-end enter- Smaller Businesses prise communications platforms to notebooks and handsets. To simplify implementation and reduce costs for smaller busi- nesses, Intel works with a number of leading communications Modular Communications Platforms for the Enterprise vendors to deliver Converged Application Platforms that can dramatically simplify integration and management (Figure 2). Enterprise VoIP solutions include an IP PBX or Centrex Based on Intel building blocks and reference designs, these System along with application, call control and media servers affordable, standards-based systems include a broad set of for supporting and extending functionality. Intel provides features, such as VoIP, wired and wireless network access, communications and compute building blocks for these routing, firewall protection, virtual private networking (VPN) needs, and works with an extensive community of vendors and QoS. They may also include call applications, such as to deliver comprehensive business solutions on cost-effective, voicemail, conference calling and automated voice response. modular platforms. A wide variety of advanced applications are available including presence detection, conferencing, unified messaging, push-to-talk and more. 5
  6. 6. A Broad Range of Optimized Client Devices • Performance versus power consumption is highly optimized to enable excellent application responsiveness Client devices are as important as the wireless network in with extended battery life. Intel® MMX™ Technology provides delivering a high return on wVoIP investments. They must be a much richer experience with multimedia applications such reliable, manageable, securable and affordable to optimize as voice and video. Intel SpeedStep® Technology can adjust end-user productivity and reduce the total cost and risk of processor power and performance based on application deploying and managing the client infrastructure. They must requirements to reduce average power consumption while also be powerful, since wVoIP requires substantial processing delivering top performance as needed. power, not only for call setup and voice transmissions, but for associated security tasks such as authentication, encryption, • Voice quality is enhanced via Intel® High Definition and virus protection. Audio, which enables mainstream computing and communications devices to deliver CD quality sound. Platforms must be able to meet these requirements while delivering sufficient battery life for uninterrupted productivity. • Integration is simplified by delivering broad support They must also provide a rich end-user experience in a variety for leading standards such as SIP. of form factors (notebooks, handhelds, etc.). If the experience • Mobility is improved by providing silicon-level support is poor, users may quickly revert to old habits, such as cell for multiple network connectivity options such as Ethernet, phone usage and traditional conferencing services, which can Wi-Fi (802.11a/b/g), 2.5/3G, Bluetooth, etc. (Figure 3). reduce ROI for the wVoIP implementation and increase overall business communication costs. • Manageability is enhanced via Intel® Active Management Technology, which is being integrated across all platform Intel delivers optimized building blocks for the full range of types and will provide new capabilities for remote trouble- client form factors, from notebooks and tablet PCs, to PDAs shooting, recovery and inventory management. This will and smart phones. make it easier for businesses to manage and secure all their client devices using consistent tools and methods. Wireless Technologies WAN MAN LAN PAN Subscriber Stations Laptop 3G WiMAX* UWB Smart Phone WCDMA Wi-Fi* RFID/ 802.16 and GPRS 802.11 TAG Broadband Bluetooth EDGE WiFi Phone PDA Figure 3. Intel is working with the industry to enable integrated client access via multiple network technologies. The goal is to enable ubiquitous and unified access to voice and data applications wherever users happen to be. 6
  7. 7. Driving Next-Generation Solutions wVoIP in Action: An Intel for Better Business Value Proof-of-Concept Intel is working with industry leaders and key standards To increase productivity and lower costs, as well as learn organizations to drive rapid improvements in standards-based more directly about the challenges and benefits of a wVoIP technologies, and is committed to providing broad leading-edge VoIP implementation, Intel has deployed a support for these standards across its full range of wireless- converged IP PBX solution at its Parsippany, New Jersey enabled products (refer to the sidebar, Better Value Through site. This end-to-end solution is based on Intel products Standards-Based Solutions). This focus on standards is an and technologies, including an enterprise-class IP PBX essential component of total value, enabling businesses to and IP Media Gateway running on Intel® Xeon™ proces- migrate cost-effectively as new VoIP and wVoIP sor-based servers with Intel NetStructure® Host Media capabilities emerge. Processing Software. A variety of clients are deployed, including dedicated IP phones and softphones running Intel also works with a broad community of hardware and on Intel® Centrino™ mobile technology-based notebooks. software vendors to deliver leading quality and functionality Supported applications include unified messaging, on affordable platforms. Since business demand for wVoIP is presence detection, click-to-call, ad-hoc click-to- exceptionally high, Intel is exploring the potential for interim conference and “follow-me” call routing. QoS and roaming solutions that go beyond current standards to simplify and improve implementations. As standards evolve This deployment addresses some of today’s most critical to address these requirements, Intel is committed to maintain- wVoIP challenges, such as QoS, roaming, security and ing backwards compatibility. This will help businesses achieve location detection. While the new systems have been optimal implementations today, while providing a cost- in place a relatively short time, Intel is already seeing effective migration path to future, standards-based solutions. benefits under real-world working conditions, including lower network maintenance costs. Employees have also Intel’s vision for business communications includes enabling readily adapted to the new client interfaces and have end-to-end wireless solutions capable of addressing the full been enthusiastic about the application benefits. As our range of client connectivity and infrastructure requirements. evaluation continues, the results will help Intel make In an early analysis based on Intel’s own environment (office more informed product development decisions and worker density and LAN usage characteristics), the Intel IT standards recommendations, so future solutions are organization estimated the following potential benefits of increasingly aligned with the real requirements of using wireless as the primary enterprise network: business users. • 40-50 Percent Lower Capital Costs: Equipment and cabling costs are reduced, and infrastructure capacity can be utilized more effectively. • 20-30 Percent Lower Operational Costs: Less equipment means a smaller infrastructure to support the same user population. • Lower End-User Support Costs and Better Agility: Wireless networking simplifies the task of moving, adding and changing workers, since both client systems and network connections are designed for portability. Intel is committed to this vision, both internally and for its customers. Therefore, it is moving aggressively to unwire entire campuses and prove out these ROI targets. The benefits of mobility have already been experienced in a wide range of business environments. By collaborating across the industry to deliver wireless VoIP capabilities using standards- based products and technologies, Intel is helping to enable a new era of business productivity and efficiency. 7
  8. 8. wVoIP in Action: The Hyatt Regency With this solution, staff members are always connected and can work more efficiently as a team to anticipate and address With the hotel industry becoming more the diverse needs of HRO’s guests. Specific benefits realized competitive every year, delivering from the project include increasing the amount of time superior personal service that improves available for interacting with guests; being able to access customer satisfaction and loyalty is a continuing goal of the information— including guest information—anywhere in the Hyatt Regency Osaka (HRO). The hotel is an urban resort hotel hotel and then tailor services accordingly on-the-spot; of the Hyatt International Corporation and has approximately increased staff motivation through an improved work environ- 500 guest rooms and 19 function rooms spread across 28 ment; and creation of new value-added guest services. floors. HRO sought an innovative IT solution that could help improve customer relationships and impact business sales— Overall, the hotel expects to save 4,800 hours of staff time and turned to Nomura Research Institute (NRI) and Intel to per year (60 hours per person per year) that will be invested develop and implement the solution. in providing improved customer service, and also expects to generate significant additional revenues from more personal- The project entailed the definition and deployment of a ized services. In addition, the hotel is better equipped to high-speed voice and data network that utilizes: attract guests, seminars and corporate conventions, since • A Mobile IP-Centrex Service to support seamless roaming an increasing percentage of visitors consider high-speed within the hotel, and links with the existing PBX system for Internet access an essential requirement. external calls. In summary, the hotel can deliver more personal service and • An 802.11b/g wireless LAN with 149 Access Points that a broader range of value-added services more cost-effectively supports voice and data for both guests and staff. and efficiently to more guests, leading to improved customer • 80 wVoIP-enabled PDAs and IP telephones based on and employee satisfaction and improved revenues. Due to the Intel® XScale® technology for staff members. benefits derived from projects like HRO’s, interest in VoIP is rapidly accelerating in Japan. It is expected that VoIP solutions • Intel® Centrino™ mobile technology-based notebooks, will become more widespread, not only in the hotel industry, including rental systems for guests. but across other industries such as healthcare, where a focus on customer service and satisfaction often is the defining factor in success. Getting Started Now is the time to explore your options for delivering voice services across your wired and wireless networks. Wired VoIP solutions offer substantial savings and a new level of application and voice integration across the enterprise. wVoIP can be used to extend these advantages for selected users and business processes, and to lay the foundation for increasing mobility and productivity as wireless standards and technologies evolve. By incorporating Intel technology-based solutions, you can count on high levels of performance, reliability and functionality, as well as simplified integration for a range of deployment alternatives. As your needs evolve, you will be better positioned to grow your solution cost-effectively to optimize the return on your VoIP and wVoIP investments. For more information, visit www.intel.com/go/voip. Copyright © 2005 Intel Corporation. All rights reserved. Intel and the Intel logo, Intel Centrino, Intel NetStructure, Intel SpeedStep, Intel Xeon, and Intel XScale are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. *Other names and brands may be claimed as the property of others. 0905/LKY/PMS/PDF 309086-001US