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  1. 1. muST SEE iPTv VERSION 1.0 | OCTOBER 2006 CONTENTS ExECuTivE Summary ...........................................2 DEFiNiNG iPTv aND iTS BuSiNESS CaSE ................2 iPTv marKET OuTLOOK .........................................3 SErviCE PrOviDEr rEQuirEmENTS aND THE B-raS ....................................................4 WHy aTCa? ..........................................................5 CONCLuSiON: CaPiTaLiZiNG ON THE iPTv OPPOrTuNiTy ..............5
  2. 2. raDiSyS WHiTEPaPEr | muST SEE iPTv ExECuTivE Summary DEFiNiNG iPTv Although Internet Protocol television (IPTV) is a aND iTS BuSiNESS CaSE new technology, it’s already poised to redefine IPTV is a catch-all term used for various methods for how consumers receive and interact with video. As a delivering multichannel TV, on-demand video and other on- result, it’s also poised to reshape the telecom and home demand multimedia content via an IP-based network. Also entertainment markets. For example, telcos can use known as “telco TV” or “video over broadband,” IPTV enables IPTV to offset declining voice revenue, attract and retain part of the “triple play” of voice, video and data that drives customers, and differentiate their services. additional incremental revenue from each subscriber. Many telcos are already in the midst of upgrading Despite its name, IPTV doesn’t send video over public their core and access networks to support IP-based Internet connections. Instead, IPTV uses the service provider’s services, but that migration alone doesn’t enable private DSL and/or fiber infrastructure. As a result, service IPTV. That’s because distributing video requires much providers have greater control over the quality and reliability higher bandwidth and higher-performance network of IPTV services. elements than voice and broadband. To meet those requirements and ensure reliable, high-quality video IPTV is fundamentally different from today’s cable and services, infrastructure vendors increasingly choose satellite TV services because each video stream is delivered Advanced Telecom Computing Architecture (ATCA) as the to the customer’s set-top box only when she’s watching that foundation for their IPTV products. channel. By comparison, cable and satellite continuously deliver all channels, regardless of which one the viewer is This white paper provides an overview of the IPTV watching at a particular moment. market, including the roles of next-generation broadband remote access servers (B-RASs) and ATCA technology. It Several trends are helping drive IPTV. These include: focuses on service provider requirements for scalability, Declining voice revenue. The growing popularity of Ethernet and legacy transport support, quality of service VoIP services such as Vonage and Time Warner Cable and capacity, as well as how systems designers and Digital Phone is eroding telcos’ voice revenue. IPTV infrastructure vendors can meet those requirements. provides a way for telcos to get into the video business and thus offset those declines. Increased competition. VoIP providers, wireless carriers, cable operators and competitive local exchange carriers (CLECs) have become major players in the telecom market over the past several years. To attract and retain customers, telcos need new services such as IPTV to differentiate themselves in the eyes of consumers. Maturing technologies. IPTV is enabled by a wide variety of telecom and audio-video (AV) technologies, including Ethernet, H.264/MPEG-4 video compression, ADSL2+ and VDSL. These technologies are now mature enough to be used in commercial deployments. Broadband infrastructure. Telcos such as AT&T, BellSouth and Verizon Communications are aggressively building out fiber, Ethernet and next-generation DSL networks. These technologies are ideal for delivering bandwidth-intensive video services, including high- definition TV (HDTV). Personalization. Today’s consumers increasingly expect – and receive – personalized services, ranging from on- demand video to song downloads. To remain competitive, service providers must accommodate personalization. IPTV is one powerful way to do that. 2 |
  3. 3. raDiSyS WHiTEPaPEr | muST SEE iPTv iPTv marKET OuTLOOK IPTV provides consumers with more ways to watch and interact with video. Here are a few examples: An IPTV customer is watching a movie and is impressed by an actor she’s never seen before. So she uses her remote to click on the actor’s name in the movie’s description to get a rundown of other films that she’s appeared in. To watch one, she simply clicks on the title. If it’s a new title that’s available only by pay-per-view, then telco picks up additional revenue. Source: iSuppli Corp. August 2006 A sports fan uses IPTV to choose from among several So far, Asia has the largest number of IPTV subscribers. camera angles at a game. One reason is because Asia has many cities with high population densities, which reduce the distance between An IPTV customer watches a music video and wants to subscribers and central offices. That makes those markets buy the artist’s album. Using his remote, he pulls up ideal for deploying next-gen DSL technologies such as a menu that lets him order it. Because it enabled that ADSL2+, which are a good fit for carrying IPTV services. purchase, the telco gets a percentage of the sale. To accommodate IPTV subscriber growth, telcos A teen-ager watches TV while using IM on screen to worldwide are increasing their capex. Figure 2 shows that chat with friends about the show. by 2009, service providers will spend $4.5 billion on IPTV infrastructure, according to Infonetics. Those are just a few examples of how IPTV will turn couch potatoes into active viewers and, in the process, One key node in the IPTV network architecture is the drive additional revenue for telcos and their business broadband remote access server (B-RAS), which serves partners. Figure 1 shows that by 2010, IPTV will have as aggregation point for wide range of services. The telco more than 63 million subscribers worldwide, up from 2.4 migration from ATM- to Ethernet-based networks in order million in 2005, according to iSuppli, an independent to accommodate IPTV is driving significant growth in analyst firm. Service revenues are forecast to hit $27 the B-RAS market. Worldwide B-RAS sales are growing billion by 2010. at compounded annual rate of 25 percent and will hit $1 billion by 2008, according to the Yankee Group. As discussed in the next section, capitalizing on the B-RAS opportunity means understanding telcos’ technical requirements and market issues. 3 |
  4. 4. raDiSyS WHiTEPaPEr | muST SEE iPTv SErviCE PrOviDEr rEQuirEmENTS aND THE B-raS To grab a share of the IPTV market, infrastructure vendors and their suppliers must understand the issues that telcos face. These include: Modularity and Scalability. Just as no two TV viewers are alike, every central office has different scalability, capacity and I/O needs. That’s why service providers value IPTV infrastructure that has an array of For telcos that are preparing to launch IPTV, key B-RAS FIGURE 2. The B-RAS provides an options to tackle a variety of applications. For example, aggregation point for a wide range requirements typically include: of services. when system designers offer a mix of products based on ATCA, Advanced Mezzanine Card (AdvancedMC) QoS policy management. Quality obviously is and MicroTCA, they give their vendor customers the critical for attracting and retaining customers, but it’s ability to meet service providers’ cost and scalability particularly important for telcos because they’re going requirements. up against cable and satellite incumbents. As a result, their IPTV services must be at least as good, if not Speed and Cost Effectiveness. Like other next- better, than those rivals. gen technologies, IPTV is based on the belief in the superiority of platforms that use open standards such Bandwidth and Ethernet port density. IP video as ATCA. This approach gives infrastructure vendors services significantly increase per-subscriber bandwidth and their service provider customers the flexibility requirements. Each B-RAS must be able to scale to necessary to develop new IPTV services and features support growth in subscribers and in the amount of quickly and cost-effectively. Open standards also bandwidth. In an IPTV deployment, it’s not uncommon reduce risk and time-to-market. to have tens of thousands of subscribers per node. To accommodate both current demand and future Interoperability. Although IPTV is a new technology, growth, the B-RAS’ control plane must be able to infrastructure vendors still have to respect the past. provide as much distribution as possible, and it For example, ignoring legacy interfaces such as should be able to scale into hundreds of ports. These Asynchronous Transfer Mode (ATM) means that they requirements extend to the interfaces, where service can’t sell into service providers that rely on those providers increasingly favor Gig E and 10 Gig E technologies. because those provide ample bandwidth for IP DSLAM One network node that plays a major role in addressing uplinks and aggregation at the network edge. these requirements is the B-RAS. For example, in terms Compute scalability and packet-processing of interoperability, the B-RAS must support legacy scalability. Packet processing uses bandwidth interfaces such as ATM and Synchronous Optical Network and processing, so when designing a B-RAS for (SONET), as well as Gig E and 10 Gig E, which are critical IPTV, infrastructure vendors must leave enough for delivering bandwidth-intensive video services. headroom. Tasks include traffic management, filtering, The B-RAS’ basic architecture requirements are set by classification, and IP forwarding, so the B-RAS must the DSL Forum’s Technical Report (TR) 59, which was be scalable enough to accommodate these as the created largely by service providers as a framework for number of subscriber and services grows. quality-of-service (QoS)-enabled, IP-based services over I/O flexibility. The B-RAS’ I/O card can handle tasks DSL using ATM as the underlying transport mechanism. such as Layer 2 and Layer 3 signaling. It also should The B-RAS serves as a central aggregation point support MultiProtocol Label Switching (MPLS), which where the telco handles tasks such as authenticating, is key for telcos that need to accommodate legacy authorizing, managing QoS and policy enforcement for technologies such as ATM. broadband services, which include video. Modularity and flexibility. Different service There is no single way to implement B-RAS. Instead, the providers have different requirements, so the B-RAS implementation varies based on the service provider’s must be designed in a way that’s flexible enough to network configuration and preferences. However, accommodate each telco’s unique needs. one trend is toward a distributed B-RAS architecture, which is popular because it provides more flexibility for accommodating changing traffic and viewing patterns, unlike a centralized B-RAS architecture. 4 |
  5. 5. raDiSyS WHiTEPaPEr | muST SEE iPTv High availability. Video is a service where outages The RadiSys Promentum™ AdvancedTCA family has – even ones that last a fraction of a second – are several features that make it an ideal fit for B-RAS. These noticeable to customers. If the video goes out during include: a critical time, such as the final moments of a close Ethernet fabric connectivity, including the 10 Gig game, the service provider will be inundated with E functionality that’s necessary to support calls. If those outages occur frequently, the service bandwidth-intensive IPTV services. provider’s overhead costs could increase, such as from offering service credits or staffing up customer Wire-speed packet-processing capabilities care to field more calls. Leading-edge compute capabilities, including Intel WHy aTCa? Xeon dual-core processors for optimum ATCA is an open architecture standard for performance designing high-availability, high-density, rack- mounted telecom shelves. The standard defines support for dual- and multi-core processors electrical interfaces, mechanical form factor, switch-fabric High scalability to accommodate subscriber and configurations and system-management interfaces for traffic growth the chassis, blade, modules and shelf-management controllers. Modularity Telcos, infrastructure vendors and systems designers I/O flexibility view ATCA as an ideal way to meet service provider requirements for the B-RAS in IPTV deployments. For High availability example, in an April 2006 Light Reading Webinar, nearly A carrier-grade operating system, the Wind River 60 percent of attendees said that they use or plan to use PNE LE ATCA for B-RAS. That response is consistent with what RadiSys continues to hear from its customers. CONCLuSiON: In the Webinar survey, 23.5 percent of respondents said CaPiTaLiZiNG ON THE iPTv that they plan to use ATCA within the next six months, OPPOrTuNiTy and 31 percent plan to use it over the next 12-18 IPTV is attractive to incumbent telcos – such as Verizon months. Those responses reflect ATCA’s position in the in the United States – because advanced video services marketplace, where adoption is both a near-term and a provide more opportunities to differentiate themselves long-term trend. from VoIP providers and cable operators. IPTV also creates new revenue streams, and it enables the triple ATCA’s growing reputation as the technology of choice plays that give telcos a powerful way to reduce churn. for IPTV B-RAS is due to its ability to meet all of the key service provider requirements. For example, in an ATCA provides systems designers and infrastructure IPTV deployment, it’s not uncommon to have hundreds vendors with the tools and features necessary to meet of Gig E ports per system. ATCA easily supports that service provider requirements for IPTV. In particular, the requirement. ATCA also lets systems designers use off- RadiSys Promentum™ AdvancedTCA offers the flexibility, the-shelf compute modules, so they always get the latest scalability, reliability and 10 Gig E functionality that can and greatest technologies, which in turn benefit their be used to develop IPTV platforms that stand out from customers. the pack. RadiSys’ ATCA solutions also enable faster time-to-market and time-to-revenue, allowing systems designers and infrastructure vendors to begin capitalizing on the global IPTV opportunity today. World Headquarters 5445 NE Dawson Creek Dr Hillsboro, OR 97124 USA Phone: 503-615-1100 Fax: 503-615-1121 Toll-Free: 800-950-0044 ©2006 RadiSys Corporation. RadiSys is a registered trademark of RadiSys Corporation. Convedia, Microware and OS-9 are registered trademarks of RadiSys Corporation. Promentum, and Procelerant are trademarks of RadiSys Corporation. *All other trademarks are the properties of their respective owners. 07-1330-01 1006 5 |