Xem 1-16 trên 16 kết quả Carrier class
  • Bài này mô tả tóm tắt tình trạng chuẩn hóa hiện thời của các tiêu chuẩn ứng dụng cho công nghệ Metro Ethernet trong mạng cung cấp dịch vụ viễn thông. Bản thân Ethernet khi thiết kế là được hướng tới hệ thống mạng LAN.

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  • Today’s successful cable operators are ramping up their networks to deliver advanced services—HD video-ondemand (VOD), tiered high-speed data, voice-over-IP (VoIP) and commercial services. MSOs are focused on improving network reliability and customer satisfaction, and understand the importance of “carrier-class” infrastructure. In order to reach the highest level of delivering the extremely reliable services customers expect, MSOs must begin thinking about the “ideal headend.”

    pdf4p thuyvan 13-08-2009 107 7   Download

  • ADC’s LoopStar 745 and LoopStar 745P provide the ideal solutions for delivering cost-effective, managed Ethernet over DS3 applications. These plug-and-play solutions deliver carrier-class performance allowing service providers to deliver low-cost, first-entry solutions for single customer scenarios. The LoopStar 745 and LoopStar 745P can attach to an existing SONET Add Drop Multiplexer (ADM), DS3 fixed wireless link, or a leased DS3 facility. Two subscriber Ethernet ports enable prioritized traffic to be fed to the network.

    pdf4p halanh 14-08-2009 59 3   Download

  • As the Navy builds the last of its Nimitz-class carriers, it asked RAND to study the trade-offs involved in accelerating the production of its new CVN 21 carrier while hastening the retirement of some of the Nimitz fleet. What are the trade-offs involved in terms of cost, capability, and fleet size? RAND researchers looked at the Navy

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  • For Ethernet services to fully deliver on the promise of lower costs and higher reliability, remote management of the network becomes essential—especially as subscriber numbers increase. Remote isolation of troubles and performance monitoring are minimum requirements for carrier-class Ethernet service.

    pdf2p halanh 14-08-2009 69 14   Download

  • Today’s cable systems serve up more than just television. Because community antenna television (CATV) systems now incorporate high-speed data and telephony services, signal flow is critical for multiple systems operators (MSOs) and their customers. Signal levels and network configurations must evolve to meet the new service demands of transitioning headends. The impending challenge for MSOs is to effectively manage their networks amid change and maintain maximum uptime for subscribers.

    pdf8p halanh 13-08-2009 106 12   Download

  • Juniper Networks EX4500 Ethernet Switches provide high performance, scalable connectivity, and carrier-class reliability for high-density environments such as campus-aggregation and data-center networks.You can manage EX4500 switches using the same interfaces that you use for managing other devices running the Juniper Networks Junos operating system (Junos OS)—the command-line interface (CLI) and the J-Web graphical interface

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  • StarGazer® is the ADC element management system for PG-FlexPlus products. StarGazer is a comprehensive, carrier-class management solution, supporting essential features from all the TMN FCAPS management functions. StarGazer’s comprehensive and highly intuitive graphical user interface (GUI) is fully compatible with the PG-FlexPlus SNMP management interface. StarGazer also provides full access to the native PG-FlexPlus craft port screens and includes an integrated SNMP MIB browser.

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  • Cd1-xMnxS nanoparticles (NPs) with size quantum confinement belong to the diluted magnetic semiconductor (DMS) quantum dot (QD) class of materials that has been widely studied in the last few years. The study of quasi-zero-dimensional Diluted Magnetic Semiconductors (DMS), such as Cd1-xMnxS Quantum Dots (QDs), is strongly motivated due to the localization of magnetic ions in the same places as the free-like electron and hole carriers occurring in these nanomaterials [1,2].

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  • The 71-76 and 81-86 GHz bands (widely known as “e-band”) are permitted worldwide for ultra high capacity point-to-point communications. E-band wireless systems offer full-duplex Gigabit Ethernet connectivity at data rates of 1 Gbps and higher in cost effective radio architectures, with carrier class availability at distances of a mile (1.6 km) and beyond.

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  • “Within the metro will be the need to install, test, and reconfigure all types of equipment with the same fundamental operational procedures and principles used in large, carrier-class networks historically. Any other approach is inherently risky.”

    pdf4p mylinh 14-08-2009 26 3   Download

  • PG-Plus® is a cost-effective subscriber carrier system that derives 2, 4, or 6 lines from a single copper pair. ADC’s proven HDSL transmission technology provides reach 20% beyond that of traditional Digital Added Main Line (DAML) solutions. PG-Plus installs in minutes due to line powering and its plug-and-play design. Its unique architecture supports POTS, UVG, DDS, ISDN, P-Phone, CLASS features, enhanced MLT testability and network management all from the same platform.

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  • The ADC OptEnet™ Optical Extension Platform is a carrier-class, intelligent, scalable platform capable of handling any network’s Ethernet or SONET media transitions. Bridging the gap between legacy copper infrastructures and fiber growth, the OptEnet platform provides the most economical evolution path. Integrated intelligence allows the user to remotely monitor system performance and transmit alarm conditions to upstream operational support systems.

    pdf10p thuyvan 13-08-2009 55 2   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Immunostimulatory effects of three classes of CpG oligodeoxynucleotides on PBMC from HCV chronic carriers...

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  • The study of quasi 1-dimensional (1d) semiconductor nano-crystals (so-called nanowires) represents the forefront of today’s solid state physics and technology.

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  • Recent studies on type II thioesterases (TEIIs) involved in microbial secondary metabolism described a role for these enzymes in the removal of short acyl-S- phosphopantetheine intermediates from misprimed holo-(acyl carrier proteins) and holo-(peptidyl carrier proteins) of polyketide synthases and nonribosomal peptide synthetases.

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