Mtnl broadband adsl technlogy adsl network architecture 2 objectives upon completion of this topic the participants will be able to. Digital subscriber line access multiplexer wikipedia. Introduction to networking protocols and architecture. The system can scale to higher port counts using the highdensity expansion hdx architecture. In the central offices, the pdn network some is ready, some is not ready. With the evolution towards ipbased network, the circuit switched network is migrating towards a new architecture called next generation network ngn which emulates the behavior of circuit switching. Designed to support the wide deployment of triple play services such as voice, video, data and highdefinition television hdtv vdsl2 is intended to enable operators and carriers to gradually, flexibly, and costefficiently upgrade existing xdsl infrastructure the protocol is standardized in the international telecommunication union. The total access 3000 dslam hdx architecture scales port capacity from a single chassis, 224 port system to a multichassis configuration serving up to 1,344 subscribers. It includes hardware components used for communication, cabling and device types, network layout and topologies. An sna network implements the ibm proprietary networking architecture.
The dslam equipment collects the data from its many modem ports and aggregates their voice and data traffic into one complex composite signal via multiplexing. However security is enhanced and better performance results because each subinterface is treated as a routed port. Isp services module 19 dns cache dns secondary pop3 mail. Short for digital subscriber line access multiplexer, a mechanism at a phone companys central location that links many customer dsl connections to a single highspeed atmline when the phone company receives a dsl signal, an adsl modem with a pots splitter detects voice calls and data. Architecture of gpon ftth access network with a tree topology, gpon maximizes the coverage with minimum network splits, thus reducing optical power. Quality enable service providers to support very high quality video and audio delivery. Adsl architecture is made up of the following components. Network architecture is the complete framework of an organizations computer network. This device can provide service specific interfaces such as t1e1, t3e3, oc, and sts. Nextgeneration access architectures and distributed msan. The intended audiences of this document are the software designers, testers and programmers of the line card based on the cport network processor family. Figure 73 illustrates the architecture of an adsl network figure 73 adsl architecture.
Pstn migration challenge for many traditional network operators former post, telephone, and telegraph ptt operators, the pstns were the origin of their business and remain a key, if declining, source of revenue. Ip dslam with integrated atm aggregation and interworking. Design and implementation of a practical ftth network. They need to upgrade their bras actually based on atm interfaces. Understanding broadband network architecture identify the different cards in the dslam identify the different interfaces on the cards in the dslam stm to ethernet converters, tier1tier2 switches, oclan switches, brasbng etc day 2 demonstrations of different types. An ftth access network comprises five areas, which are a core network area, a central office area, a feeder area, a distribution area and a user area see the picture below. Systems network architecture basics and implementation. These types of services will be supported on ngn architecture. Transport systemprovides the carrier backbone transmission interface for the dslam system. Atm dslam atm dslam ds3 or oc3 cross connect atm network ip ethernet network ip internet atm network routersubscriber termination atm atm dslams bpon olts figure 2 ip ethernet network next generation router ethernet ethernet atm vdsl2 dslams bpon olts figure 3 figure 4 total access 5000 total access 5000 existing migration ge aggregation adsl2. A dslam, or digitalsubscriberlineaccessmultiplexer, is a network distribution device that aggregates individual subscriber lines into a highcapacity uplink. Describe the main function of each network component adsl network architecture 3 adsl network components adsl modem. Isp services module 19 dns cache dns secondary pop3 mail relay news to core routers www cache service network gateway routers. Jan 17, 2017 network architecture is the complete framework of an organizations computer network.
Nextgeneration access architectures and distributed msan concept. Networking fundamentals teaches the building blocks of modern network design. To ensure a secure network, the ip dslam is equipped with a filter to control the traffic to and from endusers. They dont have that much to invest so they are willing to buy not mo. Dslam application note 1 modification history rev date 1. Access network gateway routers cable ras dslam ip, atm. What is dslam digital subscriber line access multiplexer. In section 2, we give an overview of the adslbased access network architecture. Their architecture is based on parallel processing with pipelined as well as non.
Gallon et al nextgeneration access architectures and distributed msan concept elements, the switch hub and the linecard subsystem lcss. Ims architecture overview an overview of ims architecture and related accenture experiences. Chapter 2 dsl network architectures technology overview figure 23 route bridge encapsulation architecture example design considerations most of the designimplementation consideration are the same as with the irb architecture. Components and architecture of gpon ftth access network. This is causing service providers to reexamine how access is defined. Complete ip based access network a complete ip based access network, which consists of three parts, is a preferred solution to integrate multinetworks into one. Scribd is the worlds largest social reading and publishing site. Huang, research on implementation of proxy arp in ip dslam network architectures, management, and applications ii. Russ has spoken at cisco live, interop, lacnog, and other global industry venues. Its used for policy control, bandwidth management, etc. Isp network design pop topologies and design backbone design addressing.
Learn different types of networks, concepts, architecture and. Dslam architecture, functionality and performance dslams overview the digital subscriber line access multiplexer or dslam. Subarea networking carries out a hierarchical network paradigm. These high capacity uplinks, either atm or gigabit ethernet, connect subscribers to their internet service providers isps. The total access 3050 dslam splitter shelf houses 28 octal splitter modules for pots access and complements the installation of the total access 3000 dslam.
The hierarchical structure of the network follows the organizational structure of many enterprises and thats one. Atm network architecture,atm cell size,atm addressing. The dslam handles the highspeed digital data streams coming from numerous subscribers dsl modems and aggregates it onto a single highcapacity uplink atm or gigabit. Uni cell and nni cell and atm addressing formats viz. An internet is a network of networks in which routers move data among a multiplicity of networks.
Dsl and cable modem network access are two alternative ways to connect to a network service provider without the use of more expensive dedicated service, such as fract1t1. Computer architecture provides an introduction to system design basics for most computer science students. This atm architecture tutorial describes atm network architecture, atm cell size, atm addressing and atm network interfaces etc. Access network, access technologies, outline broadband. Multicast routing protocol distribute broadcast channels across the network igmp snooping intermediate nodes dslam, ethernet switch, learn on who has requested joining. Telecommunications network and service architectures. Page 6 iptv network elements major functions zheadend processing and aggregation of video content video servers cable of mpeg2 and h. Gleaned from thousands of pages within the juniper networks techlibrary, this book represents clear and lucid coverage of how broadband subscriber management works. Central or distributed headends encoders new iptv network software systems and servers ziptv middleware zcontent. Asymmetric digital subscriber line access multiplexer. The diagram of the network architecture provides a full picture of the established network with detailed view of all the resources accessible. A dslam digital subscriber line access multiplexer is a network device, usually at a telephone company central office, that receives signals from multiple customer digital subscriber line dsl connections and puts the signals on a highspeed backbone line using multiplexing techniques.
The reader of this document is expected to have a fair understanding of the c3e np architecture and the associated coprocessor such as q3 traffic management co. Broadband network gateway overview thischapterprovidesanoverviewofthebroadbandnetworkgatewaybngfunctionalityimplemented ontheciscoasr9000seriesrouter. The next generation network offers a feasible functionality of integrated services with the most cost effective architecture. Hcldslaman digital subscriber line access multiplexer line card. Depending on its device architecture and setup, a dslam aggregates the dsl lines over its asynchronous transfer mode atm, frame relay, andor internet protocol network, i.
Dslam architecture the generic architecture of a dslam line card consists of a packet processor an d a set of dsl line chipsets. In this paper, we present an asymmetric passive optical network for xdsl and ftth access panda architecture that is suitable for providing endusers with broadband connections in a. May include a pdf policy decision function, which authorizes media plane resources e. The three parts of an ip based access network are as follows. The ohio state university raj jain 2 9 layering protocols of a layer perform a similar set of functions all alternatives for a row have the same interfaces choice of protocols at a layer is independent of those of at other layers. Next generation broadband access networks are designed to provide rich video contents, dsl, pots and voip services over traditional copper wire infrastructure. Ip dslam with integrated atm aggregation and interworking to. Ip dslam with integrated atm aggregation and interworking to ethernet. Can be located either in the visited network in full ims networks or in the home network when the visited network is not ims compliant yet. Dsl and cable modem networks digital subscriber line. The multishelf interface can in turn be connected to an industry standard router port if the operators network architecture contains routers at co locations.
These network design rules ndrs provide an overview of the current physical network architecture and high level design of nbn co limiteds nbn s network and network components. The switch hub provides a switch fabric the nim, gigabit ethernet interfaces the geaux cards and. The following chapters will concentrate on the dslam and bras architecture, functionality and classification as well as mention the performance and scalability challenges these devices face in modern tripleplay networks. Section 4 is the discussion and description of the design concepts.
This atm architecture tutorial describes atm network architecture,atm cell size,atm addressing and atm network interfaces etc. Components and architecture of gpon ftth access network fs. He has worked in routing protocols and routed network design for the past 15 years. Voice calls are sent to the pstn, and data are sent to the dslam, where it passes. Equpt out in dslam splitter isp adsl modem voice data bras adsl network architecture 6 adsl network architecture i s p inter net local loop d s l a m b r a s v s p o f c atur atuc pstn stb adsl network architecture 7 ethernet network architecture gw router ethernet switch ethernet switch ip dslam ip dslam ip dslam ethernet switch ip dslam ip.
A dslam, or digitalsubscriberline access multiplexer, is a network distribution device that aggregates individual subscriber lines into a highcapacity uplink. Dslam application note table of contents freescale semiconductor, inc, semiconductor, inc. The data transport is carried out via a standard packet bus such as utopia2, or spi3 ethernet interfaces such as mii or smii are used. Dslam architecture, functionality and performance dslams overview the digital subscriber line access multiplexer or dslam is the equipment that really allows the dsl to happen. Some networks might use a session border controller for this function. This robust packet network architecture allows carriers to use the. These network design rules ndrs provide an overview of the current physical network architecture and high level design of nbn co limiteds nbns network and network components. One of our sp customers is planning to upgrade their traditional atm dslam to ip dslam to enhance customer services and integrate video on adsl.
Atm network architecture, atm cell size, atm addressing. Hcldslaman digital subscriber line access multiplexer. The information about the network resources and the definitions are stored in the mainframe that is located at the top of the hierarchy. Designed to support the wide deployment of triple play services such as voice, video, data and highdefinition television hdtv vdsl2 is intended to enable operators and carriers to gradually, flexibly, and costefficiently upgrade existing xdsl infrastructure. System architecture and function units of our designed dslam are described in section 3. Huawei technologies ip broadband access network construction. The total access 3000 dslam can support up to 224 users with the octal access modules.
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