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optical fiber cable network ftth optical fiber cable structure ftth optical fiber cable twisted pair coaxial cable and optical f

We are the manufacturer and sales service provider of optical fiber cable network ftth optical fiber cable structure ftth optical fiber cable twisted pair coaxial cable and optical fiber fiber optic cable Single fiber optic cable fiber optic audio cable.The members of our team come from a variety of professional fields, so we can provide professional and standardized services to our customers.The goal of our factory is the satisfaction of our customer, so we'll provide excellent twisted pair coaxial cable and optical fiber products at reasonable prices.Due to the ability of producing high quality products, we have the confidence of improving our customers' business.We provide you with high quality products, but also will provide you with satisfactory service.Wherever you go, don't forget that we are here to wish you happiness and well-being.

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We are the manufacturer and sales service provider of optical fiber cable network ftth optical fiber cable structure ftth optical fiber cable twisted pair coaxial cable and optical fiber fiber optic cable Single fiber optic cable fiber optic audio cable.The members of our team come from a variety of professional fields, so we can provide professional and standardized services to our customers.The goal of our factory is the satisfaction of our customer, so we'll provide excellent twisted pair coaxial cable and optical fiber products at reasonable prices.Due to the ability of producing high quality products, we have the confidence of improving our customers' business.We provide you with high quality products, but also will provide you with satisfactory service.Wherever you go, don't forget that we are here to wish you happiness and well-being.

twisted pair coaxial cable and optical fibertwisted pair coaxial cable and optical fiber

Hybrid fiber, coaxial, and copper designs provide an `out-of-the-container` strategy

through Donald T. GALL and MITCH SHAPIRO

options abound for operators who choose between current off-the-shelf electronics as crucial to personalize a community design.

What if you have a "greenfield" possibility to offer switched telephony or "simple old television carrier" to create incremental revenues with out sacrificing your core company? Your present cable plant is in fairly good circumstance and delivering great video to your subscribers, however you simply don`t agree with a hybrid fiber/coaxial (HFC) phone gadget will offer the reliability you require. moreover, different things being equal, in case you present telephony you would want to stick with confirmed expertise with as little risk as possible.

today`s state-of-the-artwork telecommunications systems (each cell company and cable television) were vastly stronger with the introduction of transport fiber optics. despite the fact, there are nonetheless big roadblocks to constructing a single cost effective communications network that does every thing smartly. Twisted-pair networks fight with bandwidth and switching wants, while coaxial networks struggle with reliability and powering considerations. each networks in my opinion have provided useful solutions of their respective core businesses, however there are technical and financial hurdles to overcome to create a truly integrated solution that promises voice, statistics, and video. whereas it`s appealing to be on the leading edge of technology, it`s usually most suitable to be simply behind the blade!

under the correct circumstances, a community that makes use of each twisted-pair and coaxial technologies as an integrated device combines the better of each worlds and can be simply the ticket. This option structure gives twisted-pair distribution with a different point of view by holding the number of copper pairs small to reduce weight on the overlashed coaxial plant and cut back construction and splicing labor. while this strategy is extra inexpensive than traditional full copper telephony strategies, its company model only works if a major percentage of the switched telephony enterprise may also be captured. The coaxial portion can be a typical HFC layout--an evolutionary, not revolutionary, strategy to convergence, diversifications of which had been efficiently deployed within the united kingdom, and constituents of Europe.

A hybrid fiber/ coaxial/copper (HFCC) structure uses existing off-the-shelf products to build a highly authentic and cost-effective community that overcomes the inherent issues of accepted single community tactics. it is in a position to supplying all present applications similar to analog and digital video, excessive-velocity analog and digital subscriber loop (DSL) information features in addition to future purposes like demand side management (DSM) and video on demand (VOD).

A key to deploying an HFCC-like structure is to steer clear of designing a network from the "monopoly" standpoint. devoid of the improvement of 100% penetration or a assured cost of return on capital, a success community operators must find ways to set up expertise incrementally to healthy their company plans. It is this capacity to install electronics best as essential that makes the HFCC mannequin a attainable method.

The transport component of the combined HFCC plant is fiber optics, which gives the critical bandwidth and low losses to enable the deployment of functions throughout huge areas. The exact network design will depend upon the particular person groups` marketing strategy and the measurement of the serving areas. on the node serving area, fiber is terminated into both a coaxial bus and a twisted-pair community.

What makes this strategy wonderful is the methodology by which the coaxial and twisted-pair vegetation are mixed into a seamless beginning platform for narrowband and broadband features.

The HFCC network topology contains a traditional HFC network that serves node sizes starting from four hundred to 750 buildings with a twisted-pair copper overlay network serving the same variety of buildings or greater. The copper might also lengthen beyond cable-television node boundaries to make efficient use of the telephony electronics. The change between this topology and a standard telephony overlay community as constructed within the uk is the variety of copper pairs deployed. in the HFCC design, the copper cable size is proscribed to 50 or 75 pairs emanating from any node in any path. The small dimension of the copper bundles allows overlashing without fear of overloading the existing strand.

in the HFCC network, telephony nodes are deployed the use of a standard Synchronous Optical community interface at the OC-1 (51-Mbit/sec) price either in a folded or time-honored ring structure. Single-fiber, fifty one-Mbit/sec interfaces can be used if redundancy isn't favored. each and every host digital terminal (HDT) would at first be configured to supply up to 28 DS-1 functions able to 672 nonconcentrated plain historic cellphone service traces. As new nodes come on line, additional HDTs can be delivered in blocks of 28 non-focused DS-1s. As an option, enabling awareness of under 2:1 can double the variety of DS-1s attainable through application.

community design is completed via breaking down the carrier enviornment into 24 domestic pockets which are expertise locations for smaller far off digital terminals lots just like the common fiber-in-the-loop designs of the cell industry. at first, up to 48 subscribers will be served without delay from the node the usage of the common 50-pair cables and a minimally configured faraway terminal. As penetration increases drastically in any component of the serving enviornment, faraway terminals should be placed at those predetermined places. This technique enables the re-use of all but two pairs of the 50-pair cable feeding that pocket with a T1 circuit. If the serving area has colossal numbers of numerous residing devices, far off terminals may also be positioned on the time of construction to deliver shared tenant functions for the complete advanced or constructing.

The HFCC design, counting on density, is usually able to give 10% to 15% penetration of each and every leg leaving the node earlier than far off terminals are required. The faraway terminals can also be powered locally from the cable plant`s 60V AC, or with 120V AC; in either case, each and every unit has eight hours of battery backup, which satisfies the need to retain the same vigor necessities as a local-alternate service (LEC).

probably the most attractive element of this approach is that the operator controls each the coaxial plant and copper plant, which offers the pliability to use the mixed network to its fullest advantage. as an instance, considering the fact that the operator controls the copper, he can take excessive-speed data off the network earlier than it's routed via a swap, thereby presenting a connectionless course for data that is not area to the complications of switch loading. telephone return cable modems can be offered at a a whole lot reduce fee because traffic that prior to now handed throughout the LEC`s community can now be terminated at once on the operator`s headend.

considering the copper plant is all new with brief loops between the node and customer (always under 5000 feet), it's in a position to provide well-nigh any telephony or information carrier that LEC opponents must present together with asymmetric DSL and excessive-pace DSL. Off-the-shelf plug-in cards permit an operator to give "custom, secure facts capabilities" when purchasers desire them, as an alternative of the three or four weeks or although lengthy it takes to locate and repair the incumbent mobilephone enterprise`s current 40-year-old plant.

From a company viewpoint, the HFCC community can also be a magnificent device. since it is structured as an "overlay" community, it will also be divided into two bodily separated flowers for joint-task applications. for example, an operator may additionally are looking to form a joint venture with a corporation to give simple ancient cellphone carrier or records functions to organizations and residential subscribers. With this network, the operator has the capability to structure the three way partnership to encompass handiest the copper plant, which might now not have an effect on its core enterprise cable-television plant. This option offers flexibility in setting up functions that enhance the base line. option telephony suppliers take into account and prefer generic phone copper technologies as a result of their confirmed reliability. q

This simple HFCC design suggests electronic locations for additional mobile penetration.

Donald T. Gall has been concerned with the cable-tv business for the closing 28 years. He changed into a vital part of the group at Time Warner that developed the primary useful applications of analog fiber and hfc networks. he's at present a expert with Pangrac & associates (Port Aransas, TX) and may be reached at dgall814@ Shapiro has been tracking and inspecting the boom of fiber-based mostly networks and markets for over 10 years. he's currently a specialist with Pangrac & pals, specializing in analysis and evaluation focused on competitive broadband markets and technologies. He can be reached at mitchshapiro @

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