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This article analyzes Internet Protocol Television (IPTV) requirements and how they could be met when delivered over carrier grade Ethernet, for which standardization and deployment is gaining momentum because of the ease of deployment, lower cost, and compatibility with existing networks on the access end. IPTV deployment requires fine grained traffic management (TM) requirements on the service provider side to meet quality of service (QoS) and billing. Security features implementation on the user side poses several challenges that could be met using the TM features built into network processors (NPs).These days because of internet growth the simple data service is migrating to triple-play services. Triple-play services includes voice, data and video services provided over a single transport infrastructure. Now this new set of multimedia service requires end-to-end quality-of-service (QoS) guarantees. In addition, these services demand more bandwidth, generating bottlenecks that can only be handled well via traffic management (TM) features, provided by network processors (NPs).Broadband service, such as VoIP, Video conferencing, Video-on-Demand, etc requires different sets of requirements for bandwidth and deployment of such services will rely heavily on traffic management functions available on network processors chips. In addition, various IPTV features such as selection, storage, QoS, low-cost and upgrades are required for successful deployment of IPTV.The main issue for deployment of IPTV will be traffic management and QoS control for channel selection and bandwidth utilization and the NPs handling the traffic flows should be able to balance the demands of the services, while maximizing the bandwidth usage on the network.The overall objective of traffic management is to support a wide variety of services with diverse QoS requirements, while ensuring efficient sharing of network resources. Traffic management includes functions such as policing, buffer management, scheduling, shaping, back-pressure flow control, CAC admission control, route selection, and node/network monitoring. Priority-based traffic handling is needed so low latency can be provided for high-quality telephony, audio and video conferencing and other types of video services with real-time content. Moreover, efficient traffic management plays important role in delivering QoS and  increases service providers revenue that are key elements in making affordable Ethernet based personal broadband a reality. It is also important to consider security and reliability for deployment of triple-play services, since the services are bundled and delivered through one medium, attacks carried out on one service can end up bring down all the services simultaneously.Main points:·         Triple-play services includes voice, data, and video services provided over a single transport infrastructure.·         Triple-play services, including IPTV requires end-to-end quality-of-service (QoS) guarantees. In addition, they require traffic management (TM) features for handling bottlenecks because of increase in use of bandwidth.·         IPTV feature requirements are selection, storing, QoS, low cost and upgrades.·         Future IPTV service will provide two different types of TV services: standard definition TV (SDTV) (1 to 4 Mb/s) and high-definition TV (HDTV) (4 to 13 Mb/s).·         Without the presence of a network processor, scheduling using carrier-grade Ethernet gear alone is not possible.·         The NPs handling the traffic flows should be able to balance the demands of the services, while maximizing the bandwidth usage on the network.·         The overall objective of traffic management is to support a wide variety of services with diverse QoS requirements while ensuring efficient sharing of network resources.·         Priority-based traffic handling is needed so low latency can be provided for high-quality telephony, audio and video conferencing and other types of video services with real-time content.·         Policing, buffer management, scheduling and providing QoS differentiation are four significant TM features in NPs that affect IPTV implementation in carrier-grade Ethernet.·         The scheduling mechanism should promote high use of both bandwidth and buffers and allow maximal sharing among connections requiring no bandwidth guarantee or QoS.·         Security and Reliability of triple-play services.Strengths & Weaknesses: This is a very good article which had covered different issues on traffic management framework for triple-play services including IPTV. The main weakness of this article is that one has to read it two or three time for understanding.ReferenceSundar Vedantham, Seong-Hwan Kim, & Deepak Kataria (Agere Systems Inc) (2006). Carrier-Grade Ethernet Challenges for IPTV Deployment. IEEE Communications Magazine, July 2006.

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