Media Converter Chassis From FiberStore

posted on 30 May 2013 13:48 by mikofy

Media Converter Chassis is really predominantly useful to manage all sorts of media converters, along with most of the converters connected to any chassis could publish same exact power. Any fiber media converter chassis will create a lot of media converters utilizing ability, this would effortless any links and structure, it'll job stably and adapt broad width of voltage. It'll retail store good ability and may also get powered together with monitored conveniently. And any maintenance of this chassis is straightforward.

FiberStore has two kinds of rack-mounted fiber optic media converter chassis for unmanaged media converters : 2-U 14 slots media converter chassis and 2-U 16 slots media converter chassis .The 14 slots fiber optic media converter chassis supports plug-and-play installing of stand-alone media converters convert modules ,can hold at most 14 pieces media converters. The 16 slots fiber optic media converter chassis should be combined with card-type media converters .The 16 slots media converter chassis holds at most 16 card-type converters of 10/100M.

Installing in the center of network, the 14 Slot Fiber Optic Media Converter Chassis Rack not only reduce the links, simplify the structure, but also ease for management and maintenance.

14 Slot Fiber Optic Media Converter Chassis Main features: The power of the Rack could be given by the kind of single power or dual power. Adopting dual power supply, the load of every power could be reduced and the life of the power would extend; When one power supply is at fault, the other one can still work independently. It would boost the toughness for the RACK; Supplying the Converters or Powers to become plugged and played; It is possessed of stable performance, large capacity of power supply, and ease for management and maintenance; 2U high: 19-inch standard design.

Media converter chassis is acceptable which are more 16 teams of different Media Converter Cards inside a rack-mountable chassis which is provided with unified power. Installing in the center of network, it can not only reduce the links, simplify the dwelling, but additionally ease for management and maintenance. It can be tidily placed at any network environment. The external type of RACK is straightforward and tidy. It's ready for 10/100Mbps, 10/100/1000Mbps Converter Card to become plugged in, and will also be the best solution of network connections for the continuous growth and development of network.

Media converters transparently connect one sort of media, or cabling, to a different- typically copper to fiber. Obtainable in stand-alone, modular chassis-based, or PCI powered configurations, FiberStore's media converters offer copper to fiber and fiber to fiber media conversion in the following supported protocols: Ethernet Media Converter, Fast Ethernet, Gigabit Ethernet, Power-over-Ethernet, 100/100, 10/100/1000, ATM, T1/E1, DS3/E3, POTS, RS232 to Ethernet, RS485 and more. By bridging the space between legacy copper infrastructures and fiber growth, our media converters provide an economical path towards extending the length of an existing network, extending the life span of non-fiber based equipment, or extending the length between two like devices.

Source from Common 14 Slots And 16 Slots Media Converter Rack Chassis

Description Of PDH Multiplexer

posted on 29 May 2013 13:39 by mikofy

PDH Multiplexer, or Plesiochronous Digital Hierarchy multiplexer, is a kind of point-to-point optical transmission equipment used to transport large quantities of data over digital transport media, for example fiber-optic and microwave radio systems. PDH Multiplexer is designed of highly integrated structure and provides 16 standard E1 interfaces together with one channel of order wire, with self-contained alarm and NM functions, in addition to self-testing and E1 loop-back testing functions. The unit is popularly with telecommunication operator. It is suitable running a business for communication operator, government and kinds of entities.

PDH was created in the early 1960s. It derives its names in the Greek term "plesio," meaning near, and "chronos," meaning time. The name refers back to the fact that networks using PDH run in a state of just about, although not quite, perfect synchronization. PDH was the very first standardized multiplexing hierarchy based on time-division multiplexing. It works by channeling numerous individual channels into higher-level channels.

Work Theory Of PDH Multiplexer
The PDH product is in line with the theory when you've two identical clocks, each the same brand, style and everything, there is no guarantee that they'll run at the exact same speed. Most likely one of these is going to be slightly out of synchronization using the other. The transmitting multiplexer combines the incoming data streams, compensates for just about any slower incoming information, reconstructs the initial data and sends it back out at the correct rates. This system allows for that slight variation in speed and corrects it during transfer to keep the machine constantly running without pausing and waiting for certain slower data to arrive before sending it on. PDH simply fills within the missing bits to match a smooth change in data.

PDH made little provision for management of the network, and the need to fully de-multiplex a high level carrier to extract a lower level signal resulted in enhancing the capacity of PDH networks beyond a certain point wasn't economically viable. The main economic factor was the cost of the equipment required at each cross-connect point within the network where either individual channels or low-level multiplexed data streams should be extracted or added. Additionally, it added additional latency and increased the possibility of errors occurring, thereby reducing network reliability.

Available Kinds of PDH multiplexer
Traditionally, each channel in PDH was a digitized voice, but video information and knowledge can also be sent of these channels. The fundamental channel is 64 Kbits per second, which is the bandwidth that is required to deliver a voice call that's been converted from analog to digital.

N*E1 PDH Fiber Optic Multiplexers make use of the PDH fiber transmission technologies. The 2M (E1) interfaces can interact with the exchanger, light loop tool and multi-diplexer directly to form the micromini or the special network. Complete alarm function for N*E1 PDH Fiber Optic Multiplexers, it's stable, easy to maintenance and install, small in size. It can support one digital service telephone.

PDH Multiplexer can multiplex 4/8/16E1, Ethernet Media Converter (2*10/100Mbps) and V.35 signals in one fiber channel to deliver. It's ideal for low capacity, point-to-point application of remote transmission. The PDH Multiplexer can be applied to create economical and flexible multi-service transmission networks, employed for relay between switch offices, data transmission of LAN, 2M access of lease service for key clients, voice cutover for residental areas/intelligent buildings, and connection of base stations and other various digital transmission networks. Fiber Optic Multiplexer is reliable, stable, simple to install and keep, which may be monitored from Fi-view-MST management software, that is popular in voice and knowledge application field.

Source from PDH Optical Multiplexer Wiki

Passive Optical Network Review

posted on 28 May 2013 13:38 by mikofy

PON ( Passive Optical Network) refers to the optical distribution network doesn't contain any digital camera and electronic power, optical distribution network (ODN) all by the optical splitter and other passive components, without the need for expensive electronic equipment, is really a type of fiber-optic access network. PON cuts down on the amount of fiber and central office equipment required compared with point-to-point architectures.

A PON consists of an optical line terminal (OLT) at the service provider's central office and a quantity of optical network units (ONUs) near end users. In OLT/ONU between the optical distribution network includes optical fiber and passive optical splitter or Fiber Optic Coupler.

An OLT, generally an Ethernet switch, router, or multimedia conversion platform, is located in the central office (CO) like a core device from the whole EPON system to provide core data and video-to-telephone network interfaces for EPON and also the company.

ONUs are utilized to connect the client premise equipment, for example PCs, set-top boxes (STBs), and switches. Generally placed at customer's home, corridors, or roadsides, ONUs are mainly accountable for forwarding uplink data sent by customer premise equipment (from ONU to OLT) and selectively receiving downlink broadcasts forwarded by OLTs (from OLT to ONU).

An ODN includes optical fibers, a number of passive optical splitters (POSs), and other passive optical components. ODNs provide optical signal transmission paths between OLTs and ONUs. A POS can couple uplink data right into a single bit of fiber and distribute downlink data to respective ONUs.

There are two passive optical network technologies: Ethernet PON (EPON) and gigabit PON (GPON). EPON and GPON are used in different situations, and every offers its very own advantages in subscriber access networks. EPON concentrates on FTTH applications while GPON concentrates on full service support, including both new services and existing traditional services for example ATM and TDM.

EPON is really a Passive Optical Network which carries Ethernet frames encapsulated in 802.3 standards. It is a mixture of the Ethernet technology and also the PON technology in compliance using the IEEE 802.3ah standards issued in June, 2004. A typical EPON system consists of three components: EPON OLT, EPON ONU and EPON ODN. It has many advantages, for example lower operation and maintenance costs, long distances and higher bandwidths.

GPON utilizes point-to-multipoint topology. GPON standard differs from other PON standards for the reason that it achieves higher bandwidth and higher efficiency using larger, variable-length packets. And GPON is generally considered the best candidate for widespread deployments. GPON includes a downstream capacity of 2.488 Gb/s as well as an upstream capacity of 1.244 Gbp/s that's shared among users.

There are also many differences between EPON and GPON. EPON, based on Ethernet technology, is compliant using the IEEE 802.3ah Ethernet in the First Mile standard that's now merged in to the IEEE Standard 802.3-2005. It's a solution for the "first mile" optical access network. GPON, on the other hand, is a vital approach to enable full service access network. Its requirements were set force by the Full Service Access Network (FASN) group, which was later adopted by ITU-T as the G.984.x standards-an addition to ITU-T recommendation, G.983, which details broadband PON (BPON).

Both EPON and GPON are known as international standards. They cover exactly the same network topology methods and FTTx applications, incorporate exactly the same WDM technology, delivering the same wavelength both upstream and downstream together with a third party wavelength. PON technology provides triple-play, Ip address TV (IPTV) and cable television (CATV) video services.

Source from EPON And GPON Of Passive Optical Network