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Next-Generation Optical Transmission Fibers | 2005-10-20 09:30:06 |
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The first part of this paper gives a brief introduction of modern optical transmission fiber technology. The second part of this paper illustrates detailed numerical analysis, lab tests, and field trials of MCI's next-generation fiber development process from 2000 to 2005. The new Medium Dispersion Fiber (MDF) has dispersion of around 7~8 ps/nm/km at 1550nm, and a relatively low dispersion slope in the S-C-L band, which will satisfy MCI next-generation transmission fiber technical specifications and requirements at 20 Pb/s*km for "short fat" (20 Tb/s x 1000 km) and "long thin" (6.67 Tb/s x 3000 km) future DWDM, Metro, Regional, and ULH network application and deployment. The development and deployment of this extremely high-optical performance fiber will help the telecommunications industry to introduce new applications and keep MCI at the forefront of optical transmission technology around the world.
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Next-Generation Architectures | 2005-10-20 09:31:02 |
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This paper summarizes a new application technology in advanced optical transmission amplifier development and a series of successful field-trials for "hut-skipping" line architecture using hybrid Raman/Erbium-Doped-Fiber-Amplifiers (EDFA). The trials were conducted to show that the application for hut-skipped ultra long-haul (ULH) at 10-40 GB/s mixing over 1600 km linear field fibers with an average span loss of 38 DB (160 km/span) is possible. The goal was to develop a new optical amplifier which can handle 10G/s and 40G/s co-propagating on the same fiber and achieve excellent performance in metro, regional, and ULH networks. This new amplifier architecture design, while useful in the local, regional and long haul networks, is even more important in the ULH network, where it can significantly reduce network costs, simplify line architectures, and minimize system maintenance requirements. The ability to utilize EDFA/Raman rather than traditional EDFA amplifiers to eliminate traditional short span (about 80 km) line architecture design was due to three characteristics; 1) a much higher total amplifier effective gain 2) a much lower amplifier effective noise figure and 3) a much higher amplifier OSNR.
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Hays Consolidated Independent School District Tackles Rapid Growth With a Converged Network Solution | 2005-10-11 03:00:02 |
Nortel Networks |
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The Hays Consolidated Independent School District in Texas serves 9,703 students and employs more than 1,300 faculty and staff in an area along the Austin-San Antonio corridor. This district's phenomenal growth rate - where student population is predicted to possibly double by 2010 - necessitated a network solution that will easily expand to meet growth requirements and is cost-effective to operate. Nortel and Verizon paired up to deploy a converged data/voice network using IP Telephony and CWDM on the district's existing fiber.
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JEA Deploys a 140-Node Optical Ethernet Network Based on the Nortel Optical Metro 3500 and Resilient Packet Ring Technology | 2005-09-27 03:00:03 |
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Since 1895, JEA has owned, operated and managed the electric system established by the City of Jacksonville. A major power outage in Jacksonville in 2003 solidified JEA's need to upgrade the legacy system for a resilient and redundant OC-48 network capable of supporting their growing voice, data and storage traffic requirements. To meet their needs, JEA is deploying a 140-node OC-48 OE network based on the Nortel Optical Metro 3500. JEA now has the ability to leverage its fiber assets and converge voice, data and control systems traffic on a single network.
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Distance Learning in Spring Independent School District | 2005-09-27 03:00:03 |
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Spring ISD is centered 20 miles north of Houston, Texas. To provide needed distance-learning services, the Spring Independent School District (ISD) would have to transmit video across its 22-campus network. However, the District lacked both the necessary infrastructure and the funds required to build it. Nortel Networks conducted an ROI analysis and found the money needed to build a converged data, voice, and video network. As a result, Spring ISD today operates one of the largest converged networks in the U.S.
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Indevco Achieves Maximum ROI in 12 Months With Dell Infrastructure | 2005-10-06 03:00:01 |
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In Before 2003, leading manufacturer Indevco operated using only paper-based processes. This was inefficient, and failed to provide distributors with the real-time information they need to work effectively. Indevco decided to roll out a standardised Dell infrastructure provided by Systems Equipment Telecommunication Services (SETS), Dell's distributor in the Lebanon. Because of its strategic OEM relationship with EMC2, Dell was able to deliver an architecture based on four Dell/EMC2 CX200 Fibre Channel (2 Gigabits per seconds) storage arrays.
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Klein Independent School District (ISD): Optical Network Ensures a Bright Future for Growing School District | 2005-10-11 03:00:02 |
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Klein ISD is a sprawling suburban school district that covers 87.5 square miles of north Harris County, Texas. Klein ISD needed to upgrade a 32-site Metropolitan Area Network (MAN) whose voice system was producing an annual telephone bill of over $500,000 and whose data system was running at 75% to 90% capacity. Klein ISD implemented an IP-based, converged voice-and-data network with a Gigabit Ethernet core, fiber optic links between sites, and end-to-end QoS.
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ADC Telecommunications Case Study: The Homestead Resort | 2005-11-10 01:00:02 |
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It is easy to imagine Presidents and other dignitaries walking among the opulent foyers, formal sitting rooms, dining rooms and grand ballroom of The Homestead. To provide wireless service for all guests within the resort, Triton needed a system that would support TDMA and GSM devices and would easily accommodate future technologies as well. Given the remote location, Triton also wanted a solution that would require little or no maintenance. ADC Wireless worked with Triton to deploy ADC's Digivance Indoor Coverage Solution (ICS) to provide consistent coverage and increased capacity throughout the large brick resort and conference center. ADC's solution allowed Triton to cost effectively deliver excellent quality of service within The Homestead, enabling the resort to deliver complete wireless access and convenience within the grand and luxurious turn-of-the-century resort.
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Sun Case Study: Urasoe City Offices | 2005-12-06 03:19:12 |
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For more than 20 years, the city of Urasoe (population 105,000), located in the southern part of Okinawa, Japan, has steadily developed advanced computing capabilities. The Japanese city of Urasoe needed to find a server-based thin client solution which allows for unified application control while reducing overall client maintenance. Using Tarantella software and thin clients, the city of Urasoe is able to offer applications to users regardless of location and with a great reduction in maintenance costs.
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ANC Rental Revs Up With StorageTek-Based Virtual Tape Solution | 2006-01-03 01:01:49 |
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As one of the world's largest rental car companies, ANC Rental Corp. lives in a fast-moving, fast-growing business environment. To maintain its competitiveness, ANC must ensure that its data storage environment keeps pace with the growth in the business. So over the years, ANC has often looked to StorageTek for leading-edge solutions - both disk- and tape-based - to the corporation's data storage challenges.
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