Tài liệu miễn phí Phần cứng
Download Tài liệu học tập miễn phí Phần cứng
DS3 Fiber Loop Converter
The DS3 Fiber Loop Converter (DS3 FLC) is an alternative to high bit-rate DS3 multi- plexers, allowing an economical last mile DS3 transport or a point of presence hand off. The DS3 FLC is a plug and play system that can be configured to maximize facilities utilized for point-to-point or point-to-multipoint topologies and can be optioned for 1:1 protection. The DS3 FLC supports the following applications: • DS3 Hicaps • DS3 Point of Presence (POP) Hand-off • DS3 Video Transport • DS3 ATM Transport...
8/29/2018 4:40:38 PM +00:00
E1 QUAD FIBRE LOOP CONVERTER AND UNIVERSAL MOUNTING CHASSIS
ADC has designed a family of Fibre Loop Converters (FLCs) that provide a cost-effective alternative to deploying service over copper while avoiding the high capital investment of primary multiplexers and Fibre optic terminals. This family includes products designed for economical distribution of single or multiple 2.048 Mb signals. The E1 Quad FLC multiplexes up to four 2.048 Mb signals for transport over two fibres at typical distances of 72 Km (44 miles). The E1 QFLC system consists of a rack mounted central exchange shelf and a wall or rack mounted customer premises shelf. In contrast to fibre optic terminal systems (FOTS), which require a variety of...
8/29/2018 4:40:38 PM +00:00
N ETWORK EQUIPMENT BUILDING
As more and more carriers jump into the telecommunications arena providing T1 services, the amount of equipment to supply these services to customers is dramatically increasing. And the number of manufacturers who provide equipment to the carriers is exploding at an even more rapid pace. Some of these new suppliers have never made equipment for the public telecommunications network before. Their equipment has resided only in the highly-controlled environment of computer and data processing rooms, and their inexperience with the rigors of the less controlled Central Office (CO) and outside plant facility environments has resulted in reliability and operability problems. One carrier has even experienced a meltdown due...
8/29/2018 4:40:38 PM +00:00
SONEPLEX E1 LOOP EXTENDER EXCHANGE PLATFORM
The Soneplex E1 Loop Extender Exchange platform provides centralized network management and point to multi-point transport for up to 20 E1 and 40 Nx64 kbps circuits over the local loop. Suitable for indoor or outside plant deployment, it provides maximum operational flexibility while minimizing network elements and installation time.
8/29/2018 4:40:38 PM +00:00
Product List
Soneplex Loop Extender Access Modules Central Office HDSL Remote HDSL Standard Simplex power Simplex power and idle code Simplex power and local power HDSL Repeater Repeater Loop Extender (-130V) Repeater Loop Extender Plus (+130V) Quad Loop Extender SC connectors FC connectors Quad Loop Extender - Short Range SC connectors FC connectors
8/29/2018 4:40:38 PM +00:00
SONEPLEX HDSL REMOTE MODULE
The Soneplex HDSL Remote (HLXR) module operates with ADC's Soneplex HDSL Central Office module to provide full duplex DS1 transport over two unconditioned, non-loaded copper loops. This 200 mechanics HLXR module is compatible with a variety of indoor and outdoor enclosures, including a network interface device. It supports span powered HDSL service up to 12,000 feet. One HDSL repeater extends the HDSL distance up to 24,000 feet, or 36,000 feet with two repeaters. Three models are available, each occupying a single slot in either a 200 or 400 style enclo- sure....
8/29/2018 4:40:38 PM +00:00
Connector Products
ADC's BNC connectors are the most reliable and universally accepted method of terminating coaxial cable in the market today. Outstanding electrical performance (up to 3 GHz) is achieved by unique design elements in the industry's truest 75 Ohm connector. Precision-molded insulators with locking gold-plated center conductors ensure true 75 Ohm characteristic impedance. Innovative features result in significant reduction of impedance mismatch throughout the network and improved transmission reliability in digital applications....
8/29/2018 4:40:38 PM +00:00
SONEPLEX DS3 REMOTE CONTROL SYSTEM
The Soneplex DS3 Remote Control System provides for centralized manage- ment of up to seven remotely located Soneplex Broadband Systems. By using an existing overhead channel in DS3 links, provisioning, monitoring, and alarm information can be easily attained without the need for a secondary communications network. This channel is used to transport TL1, TBOS, or menu messages from each remote Soneplex Broadband System to a network Operating System or a craft terminal.
8/29/2018 4:40:38 PM +00:00
SONEPLEX ACCESS MULTIPLEXER SYSTEM
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....
8/29/2018 4:40:38 PM +00:00
SONEPLEX HDSL DDM PLUS MODULE
The Soneplex HDSL DDM Plus (HLXPLUS) module operates with ADC's Soneplex HDSL Remote Module to provide full duplex DS1 transport over two unconditioned, non-loaded copper loops up to 12,000 ft. Designed for plug-in compatibil- ity with the central office-based AT&T DDM Plus shelf, the HLXPLUS provides fast, simple and economical HDSL trans- mission in new or existing installations.
8/29/2018 4:40:38 PM +00:00
SONEPLEX HDSL R EMOTE ENCLOSURES
The Soneplex family of HDSL remote enclosures allows flexible configuration of Soneplex HDSL type 400 remote modules. Options include single and multiple installation, cabinet, telco room or rack mounting, and inside or outside deployment. ADC's Soneplex system is the lowest total cost solution for carriers to grow their T1-based business services. Focused on providing flexible, end-to-end solutions, the Soneplex system saves carriers money on T1-based services over copper or fiber, using HDSL, ADSL, traditional T1 repeater or Optical DS2 technology, in a single platform. From operations, mainte- nance, provisioning and high-speed backbone connections to central office space and cabling, the Soneplex system is de- signed to take costs out of today's T1...
8/29/2018 4:40:38 PM +00:00
Productos globales ADC de acceso y transmision
ADC Telecommunications ofrece una amplia gama de productos de acceso y transmisión para ser utilizados en redes del mercado mundial. • Sistema convertidor de bucles de fibra E1 • Servidor de acceso a comunicaciones integradas ICX™ • Sistema de extensión de la LAN Soneplex® • Sistema de extensión de canales ECX Soneplex®
8/29/2018 4:40:38 PM +00:00
SONEPLEX T1-B ASED SERVICE DELIVERY SYSTEMS
• An intelligent T1 service delivery system • Distributes up to 28 DS1 circuits over a variety of transport media • Features an integrated intelligent network management system for centralized circuit control • The only integrated intelligent platform on the market for simultaneous DS1 transport over both copper and fiber ADC’s Soneplex® Intelligent T1 Service Delivery System
8/29/2018 4:40:38 PM +00:00
SONEPLEX
The concept of delivering T1s is almost 30 years old. New technolo- gies like HDSL have been intro- duced but, overall, T1-based ser- vices today are being delivered with the same architecture used in the 1960s. But, while the architec- ture has remained, applications have changed radically. The tele- phone company introduced T1 as a means of delivering message trunks over copper facilities between central offices. No one imagined that T1 would become the preferred vehicle for large amounts of bandwidth to business customers and that its growth in those applications would exceed all expectations....
8/29/2018 4:40:38 PM +00:00
GR-1089 HDSL A3 VOLTAGE
HDSL is a powerful, cost-effective, T1-based transport technology that leverages existing copper infrastructure and is, therefore, of great interest to both subscribers and service providers. It uses central office (CO) units at the carrier's office and remote units at the customer site and may, depending upon distance, require HDSL repeaters over the length of the copper span. The power needed to operate the repeaters and remote equipment is provided over the span itself, and must be handled safely for the protection of users and telephone company craftspersons....
8/29/2018 4:40:38 PM +00:00
A complete illustrated guide to the pc hardware
Our PC's are data processors. PC's function is simple: to process data, and the processing is done electronically inside the CPU and between the other components. That sounds simple, but what are data, and how are they processed electronically in a PC? That is the subject of these pages.
8/29/2018 4:28:30 PM +00:00
COMPUTER SYSTEM
What is a computer? A computer may be defined as a machine which accepts data from an input device, processes it by performing arithmetical and logic operations in accordance with a program of instructions and returns the results through an output unit. A computer is basically an electronic machine operating on current.
8/29/2018 4:28:28 PM +00:00
Hardware và software
Phương pháp tổng hợp hardware và software tạo ra mô tả tổng hợp của 2 thành phần thông qua việc sử dụng các công cụ có sẵn như là PTOLEMY và HYPER tổng hợp tạo thành hardware và software.
8/29/2018 4:28:27 PM +00:00
USB TOAN TAP_UDS
Ngày nay việc sở hữu 1 thiết bị lưu trữ nhỏ gọn và tiện ích như USB flash disk (UFD) gần như là một thứ không thể thiếu với người sử dụng vi tính. Giá cả thì ngày càng rẻ và đi củng với giá rẻ là việc chất lượng ngày càng đi xuống. Để tìm hiểu thêm về cấu tạo, nguyên lý họat động, những lỗi thường gặp và cách xử lý của lọai UFD này lqv77 tôi xin trình bày lọat bài viết “Usb Flash Disk - Toàn tập”....
8/29/2018 4:28:27 PM +00:00
Battery Operated Devices & System
This chapter aims at providing an overview of products and systems using batteries. Here, the term product indicates any device – small or large, portable or not – powered by a battery. The term system indicates a large installation, such as an energy storage plant to back up an electricity grid, or an extended sensor network.
8/29/2018 4:28:27 PM +00:00
Hướng dẫn sử dụng Phần mềm quản lý công văn - văn bản
Vì sao cần sử dụng phần mềm quản lý văn bản? - Nhu cầu sử dụng phần mềm để quản lý tài liệu và công văn rất lớn. - Quản lý giấy tờ tài liệu đơn giản và khoa học - Rút ngắn thời gian tìm kiếm thông tin - Tiết kiệm không gian lưu trữ dữ liệu - Giải quyết vấn đề nhân sự cho đơn vị - Hiệu quả công việc cao hơn rất nhiều so với thông thường. - Xử lý thông tin nhanh gọn và an toàn. -...
8/29/2018 4:23:46 PM +00:00
Chương 6 - Ổ cứng HDD
Ổ cứng là một thiết bị lưu trữ có dung lượng lớn dùng để lưu trữ toàn bộ phần mềm của máy tính bao gồm . + Các hệ điều hành + Các chương trình ứng dụng + Các File văn bản v v ...
8/29/2018 4:23:31 PM +00:00
Khái niệm căn bản về thiết bị mạng
Tham khảo tài liệu 'khái niệm căn bản về thiết bị mạng', công nghệ thông tin, phần cứng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả
8/29/2018 4:20:13 PM +00:00
PC Magazine 2008
The first issue of the magazine, dated February-March 1982, appeared as PC and described itself as The Independent Guide to IBM Personal Computers.[1] (The word Magazine was not added to the logo until the first major redesign in January 1986). PC Magazine was created by David Bunnell, Eddie Currie and Tony Gold, a co-founder of Lifeboat Associates who financed the magazine. The magazine grew beyond the capital required to publish it, and to solve this problem, Gold sold the magazine to Ziff-Davis who moved it[clarification needed] to New York City, New York. Bunnell and his staff left to form PC...
8/29/2018 4:20:06 PM +00:00
PC Magazine 2008 - 11
The first issue of the Magazine, dated February-March 1982, appeared as PC and described itself as The Independent Guide to IBM Personal Computers.[1] (The word Magazine was not added to the logo until the first major redesign in January 1986).PC Magazine is the #1 information resource for technology professionals. Every issue provides comprehensive product evaluations, including side-by-side comparisons based on benchmark tests from PC Magazine Labs — the industry’s foremost...
8/29/2018 4:20:06 PM +00:00
Khắc phục lỗi Dumping Physical memory của Win XP
Hướng dẫn khắc phục lỗi màn hình xanh chết chóc của Window XP.
8/29/2018 4:19:56 PM +00:00
Khắc phục sự cố ổ đĩa quang CD-DVD
Hướng dẫn khắc phục lỗi thông thường cho thiết bị quang CD, DVD.
8/29/2018 4:19:56 PM +00:00