Xem 1-20 trên 31 kết quả The sonet
  • The SONET standard includes four functional layers: the photonic, the section, the line, and the path layer. They correspond to both the physical and the data link layers.

    ppt50p trada85 22-01-2013 62 15   Download

  • Many services running on modern digital telecommunications networks require accurate synchronization for correct operation. For example, if switches do not operate with the same clock rates, then slips will occur and degrade performance. Telecommunication networks rely on the use of highly accurate primary reference clocks which are distributed network wide using synchronization links and synchronization supply units.

    pdf185p hoangchung_dtvt 12-12-2012 34 6   Download

  • As bandwidth needs have increased, enterprise customers have found it more economical to aggregate traffic from remote offices and have it backhauled to the data center via a DS3. For the carrier, this presents a problem. The carrier must be able to access the DS1s within the DS3 and then cross-connect them to the appropriate VT1.5s within the SONET payload. Traditionally, this operation has been performed using a Digital Cross-Connect System (DCS) and a SONET ADM. Obviously, requiring two separate devices for this function increases CAPEX and OPEX for the carrier.

    pdf2p halanh 14-08-2009 30 5   Download

  • The LoopStar SONET product family provides traditional Add/Drop Multiplexer (ADM) functionality to deliver TDM and data services. SONET has a long history as the service providers’ transport mechanism of choice due to its reliability, traffic grooming capabilities, and simplified remote management. With recent developments in Ethernet over SONET (EOS), SONET ADMs now have the capability to effectively groom Ethernet traffic onto the SONET backbone.

    pdf4p mylinh 14-08-2009 48 4   Download

  • The HiGain HXU-359 STS-1 multiplexer is a cost-effective SONET access platform that enables direct insertion of DS1s or E1s onto any SONET network via an economical STS-1 interface. This environmentally hardened unit enables installation in a co-location cage or remote cabinet. The HXU-359 condenses SONET technology into the highest service density multiplexer that minimizes space, power and heat dissipation requirements. The HXU-359 offers a mixed T1/E1 service of up to 28 DS1s or 21 E1s or any valid combination onto a single high-speed STS-1 network interface....

    pdf2p thuyvan 13-08-2009 47 5   Download

  • ADC's Loopstar® Fiber Field Cabinet for ADC’s next-generation SONET platform offers service providers an economical solution for providing legacy TDM services (DS1/DS3) and next-generation Ethernet services in areas that cannot be served from local wire centers or mobile switching centers. In these environments, ADC’s small outdoor enclosure, packaged with ADC’s LoopStar 800 SONET access system and other supporting equipment, allows carriers to continue providing customer requirements and offering additional services.

    pdf4p halanh 14-08-2009 40 5   Download

  • ADC’s LoopStar SONET system is designed to enable service providers to easily and economically provide Ethernet business services to enterprise customers looking to increase their bandwidth above current DS1 or DS3 speeds. These systems efficiently transport layer 2 Ethernet service over SONET while providing the level of redundancy and protection associated with traditional SONET networks. The LoopStar SONET system is designed to be rack or wall mounted for individual and/or multi-tenant business units.

    pdf2p halanh 14-08-2009 40 4   Download

  • The LoopStar® 800 is an advanced next-generation SONET access system that allows service providers to cost-effectively deploy and manage TDM and Ethernet services to end-user customers from a single platform. Designed for central office, OSP cabinets and customer premises environments, the LoopStar 800 is ideally suited for all network deployment applications. With an integrated universal back-plane architecture, the system supports multiple, interchangeable network and tributary interface cards for easy and economical service deployments.

    pdf8p halanh 14-08-2009 29 4   Download

  • One of the greatest challenges facing mobile operators today is reducing the cost of the backhaul portion of their network, while increasing reliability and revenue generating opportunities. Additionally, mobile operators need to be sure that the backhaul transport solution is capable of addressing the traditional 1 and 2G-based Radio Access Networks (RANs) as well as the 3G-based RANs. The number of 3G-based RANs will grow driven by new services with higher bandwidth that enable end-users to get broadband access through their mobile devices....

    pdf4p halanh 14-08-2009 47 4   Download

  • The LoopStar 800 SONET Access System enables service providers to cost effectively deploy a fiber-based solution to address locations where copper-based M13 multiplexers are typically deployed. While providing an effective alternative to copper-based M13s, the LoopStar 800 can deliver other advanced services simultaneously from the same system. As a result, the LoopStar 800 provides increased network visibility through its SONET management features and supports other services without significantly increasing the per port cost over traditional M13 multiplexers....

    pdf2p mylinh 14-08-2009 48 3   Download

  • The LoopStar® 1600 is an advanced, next-generation SONET multi-service transmission platform that allows service providers to cost-effectively aggregate, deploy, and manage TDM and Ethernet services. With its compact design and ability to scale from an OC-3 to an OC-192 network, the LoopStar 1600 provides a low-cost, high-growth solution for adding services at the central office or at the edge of the network.

    pdf4p halanh 14-08-2009 29 2   Download

  • In this chapter, we introduce a wide area network (WAN), SONET, that is used as a transport network to carry loads from other WANs. We first discuss SONET as a protocol, and we then show how SONET networks can be constructed from the standards defined in the protocol.

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  • Cisco enterprise customers have in the past relied heavily upon traditional WAN/MAN services for their connectivity requirements. Layer 2 circuits based on TDM, Frame Relay, ATM, and SONET have formed the mainstay of most low-speed WAN services. More recently, high-speed MAN solutions have been delivered directly over Layer 1 optical circuits, SONET, or through the implementation of point-to-point or point-to-multipoint Ethernet services delivered over one of these two technologies.

    pdf218p batoan 11-08-2009 108 48   Download

  • Enterprise customers have in the past relied heavily upon traditional WAN/MAN services for their connectivity requirements. Layer 2 circuits based on TDM, Frame Relay, ATM, and SONET have formed the mainstay of most low-speed WAN services. More recently, high-speed MAN solutions have been delivered directly over Layer 1 optical circuits, SONET, or through the implementation of point-to-point or point-to-multipoint Ethernet services delivered over one of these two technologies.

    pdf80p batoan 11-08-2009 93 24   Download

  • ADC’s ThinMux™ product family helps carriers build today's access networks that can easily adapt to meet tomorrow's needs. Only the ThinMux products provide a single platform to encompass many universal standards (SONET/SDH, DS3, T1/E1). As bandwidth requirements increase and network technologies change, ThinMux is quickly and easily upgraded by replacing the multiplexer card within the chassis. Complete flexibility in delivering unique T1/E1 (or mixed) services without additional provisioning, servicing, inventory or training is possible through the one time ADC ThinMux investment....

    pdf4p thuyvan 13-08-2009 67 18   Download

  • Synchronous Digital Hierarchy (SDH) and Synchronous Optical Network (SONET) The synchronous hierarchy digital (SDH) is emergingthe as universal technology for transmission telecommunications in networks. the publication Since first of international standards by ITU-T in 1989, SDH equipment has been rapidly developedand deployed across the world,andisrapidlytakingoverfromitspredecessor,thePlesiochronousDigitalHierarchy (PDH).ThischapterdescribesSDHandtheNorthAmericanequivalentofSDH,SONET (SynchronousOpticalNetwork),fromwhichitgrew...

    pdf14p huggoo 20-08-2010 61 17   Download

  • WANs, Internet Access, and Remote Connectivity Identify a variety of uses for WANs Explain different WAN topologies, including their advantages and disadvantages Describe different WAN transmission and connection methods, including PSTN, ISDN, T-carriers, DSL, broadband cable, SONET, and wireless Internet access technologies Compare the characteristics of WAN technologies, including throughput, security, and reliability Describe the software and hardware requirements for remotely connecting to a network...

    ppt56p itvovantien 13-07-2012 41 9   Download

  • The Soneplex Access Multiplexer System breaks the barrier between customer and carrier networks by being the first to integrate LAN support into SONET access rings. By using advanced SONET technology, the Soneplex AM System requires less space and power while delivering services at a lower cost and higher reliability than conventional SONET multiplexers. Centralized management provides network control for a high quality subscriber-based service. Optimized for DS1, DS3, STS-1 and transparent LAN service access, the Soneplex AM is ideal for SONET local loop applications....

    pdf8p minhtuan 10-08-2009 209 7   Download

  • Unprecedented growth in the telecommunications industry has driven wide-spread deployment of optical fiber over the past few years. As a result, many service providers are finding that their existing fiber frames and troughs are overflowing with large masses of optical fiber patch cords. In addition, the rapid deployment of SONET/SDH, fiber in the loop and video initiatives has created the demand for increased termination density at the fiber distributing frame.

    pdf30p thuyvan 13-08-2009 65 7   Download

  • The LoopStar® Metro 3600 is an advanced, next-generation SONET multi-service transmission platform that allows service providers to cost-effectively aggregate, deploy, and manage TDM and Ethernet services. With its compact design and ability to scale from an OC-3 to an OC-192 network, the Metro 3600 provides a low-cost, high-growth solution for adding services at the central office or at the edge of the network.

    pdf4p maiphuong 13-08-2009 59 4   Download

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