SOPTO Technologies is proud to announce the release of the MAX-510 Mini Linux-ready ARM9 Computer. The new MAX-510 is a Mini Linux-ready ARM9-based computing platform for embedded headless run-only application. It comes equipped with two Ethernet, eight Serial ports, two USB host ports, plus one internal SD memory card slot and twenty-one CMOS/TTL-level GPIOs in an incredible small package measuring only 160x104x32 mm. The MAX-510 is a true Linux computing platform and supports versatile file systems.
Users can operate the MAX-510 the same way as they do on a normal Linux desktop. It comes with two standard 10/100Mbps Ethernet port for wired networking. It can also easily support wireless IEEE-802.11b/g by simply plugging an USB Wi-Fi dongle into the unit.
The MAX-510 provides eight 921.6Kbps high-speed Serial ports. Ports 1, 5, 6, 7, and 8 can be configured as RS-232, RS-422 or RS-485. Ports 2, 5, 6, 7, and 8 features full RS-232 support for modem connection. Ports 3 and 4 support standard RS-232s.
The MAX-510 also comes with twenty-one CMOS/TTL-level digital I/Os, an optional SD flash memory card slot that can be utilized as an additional hard drive, and Open-source GNU Tool Chain, including C/C++ cross-compiler and POSIX standard C/C++ library, that’s bundled with the MAX-510 for free.
Related:
2013年6月6日星期四
IP67 Rated Ruggedized Industrial Ethernet Switch
SOPTO Technologies is proud to announce the release of our newest line of IP67 rated Industrial Managed Ethernet Switches. Each of the IP67 switches is available in an extended operating temperature model that can withstand temperatures of -40°C to 75°C. The units are EN50155 compliant and Class 1, Division 2 rated which makes them suitable for railway applications as well as hazardous location environments, respectively.
There are three models in SOPTO' new product range. The LNX-800N-67-T has 8 x 10/100TX ports, while the LNX-1002Nx-67-T (x: M- Multi-mode, S- Single mode) has 8 x 10/100TX and 2 x 100FX ports. The models are designed with circular M12 connectors for Fast Ethernet interface, and provide rugged construction which complies with IP67 standards, therefore, making the equipment ideal for damp, dusty, and other harsh industrial environments.
The IP-67 Managed Industrial Switch Models boast a backup power solution with dual power inputs and management features that include VLANs, IGMP Snooping, IPv6 support, Port Trunking with LACP, LLDP, SSH, SSL, and route redundancy through RSTP or from SOPTO's proprietary ring. The Switches reduce installation costs, ensure real time operation, increase network reliability, and are compact enough to be mounted anywhere, making them suitable for space-constrained environments and an ideal choice for many industrial applications.
Related:
http://fiberoptic.bloguni.com/2013/06/06/new-8-port-industrial-rs-232422485-universal-input-pci-express-card/
http://sopto-10gmodule.blogspot.com/2013/06/sopto-honored-with-wireless-award-from.html
http://www.alivenotdead.com/zerolang/SOPTO-Introduces-New-Gigabit-Fiber-Media-Converter-profile-3071611.html
There are three models in SOPTO' new product range. The LNX-800N-67-T has 8 x 10/100TX ports, while the LNX-1002Nx-67-T (x: M- Multi-mode, S- Single mode) has 8 x 10/100TX and 2 x 100FX ports. The models are designed with circular M12 connectors for Fast Ethernet interface, and provide rugged construction which complies with IP67 standards, therefore, making the equipment ideal for damp, dusty, and other harsh industrial environments.
The IP-67 Managed Industrial Switch Models boast a backup power solution with dual power inputs and management features that include VLANs, IGMP Snooping, IPv6 support, Port Trunking with LACP, LLDP, SSH, SSL, and route redundancy through RSTP or from SOPTO's proprietary ring. The Switches reduce installation costs, ensure real time operation, increase network reliability, and are compact enough to be mounted anywhere, making them suitable for space-constrained environments and an ideal choice for many industrial applications.
Related:
http://fiberoptic.bloguni.com/2013/06/06/new-8-port-industrial-rs-232422485-universal-input-pci-express-card/
http://sopto-10gmodule.blogspot.com/2013/06/sopto-honored-with-wireless-award-from.html
http://www.alivenotdead.com/zerolang/SOPTO-Introduces-New-Gigabit-Fiber-Media-Converter-profile-3071611.html
New Compact Linux-ready ARM9 Computers
SOPTO Technologies is proud to announce the release of the MAX-500 and MAX-504 Compact Linux-ready ARM9 Computers. The MAX-500/504 is the world's smallest Linux-ready ARM9-based computing platform for embedded headless run-only application.
It comes equipped with one Ethernet, four serial ports, two USB host ports, plus one internal SD memory card slot in an incredible small package measuring only 78x108x25 mm.
The MAX-500/504 is a true Linux computing platform and supports versatile file systems. Users can operate the MAX-500/504 the same way as they do on a normal Linux desktop.
It comes with one standard 10/100Mbps Ethernet port for wired networking. It can also easily support wireless IEEE-802.11b/g by simply plugging an USB Wi-Fi dongle into the unit.
Also, the MAX-500/504 provides four 921.6Kbps high-speed serial ports for communication with RS-232/422/485 devices. Port 1 can be configured as RS-232, RS-422 or RS-485. Port 2 features full RS-232 support for modem connection and Port 3 & 4 support standard RS-232s.
Moreover, Open-source GNU Tool Chain (including C/C++ cross-compiler and POSIX standard C/C++ library) is bundled with the MAX-500/504 for free, making the MAX-500/504 Compact Linux-ready ARM8 Computer a very customizable and powerful computing platform.
Related:
http://sopto-10gmodule.blogspot.com/2013/06/sopto-technologies-announces-dual-rate.html
http://geponsolution.blog.fc2.com/blog-entry-171.html
http://blogs.realtown.com/sopto/2013/06/06/new-1000baset-to-1000basesxlx-media-converters/
It comes equipped with one Ethernet, four serial ports, two USB host ports, plus one internal SD memory card slot in an incredible small package measuring only 78x108x25 mm.
The MAX-500/504 is a true Linux computing platform and supports versatile file systems. Users can operate the MAX-500/504 the same way as they do on a normal Linux desktop.
It comes with one standard 10/100Mbps Ethernet port for wired networking. It can also easily support wireless IEEE-802.11b/g by simply plugging an USB Wi-Fi dongle into the unit.
Also, the MAX-500/504 provides four 921.6Kbps high-speed serial ports for communication with RS-232/422/485 devices. Port 1 can be configured as RS-232, RS-422 or RS-485. Port 2 features full RS-232 support for modem connection and Port 3 & 4 support standard RS-232s.
Moreover, Open-source GNU Tool Chain (including C/C++ cross-compiler and POSIX standard C/C++ library) is bundled with the MAX-500/504 for free, making the MAX-500/504 Compact Linux-ready ARM8 Computer a very customizable and powerful computing platform.
Related:
http://sopto-10gmodule.blogspot.com/2013/06/sopto-technologies-announces-dual-rate.html
http://geponsolution.blog.fc2.com/blog-entry-171.html
http://blogs.realtown.com/sopto/2013/06/06/new-1000baset-to-1000basesxlx-media-converters/
2013年5月23日星期四
TIGHT-BUFFERED CABLE
With tight-buffered cable designs, the buffering material is in direct contact with the fiber. This design is suited for "jumper cables" which connect outside plant cables to terminal equipment, and also for linking various devices in a premises network. Multi-fiber, tight-buffered cables often are used for intra-building, risers, general building and plenum applications.
The tight-buffered design provides a rugged cable structure to protect individual fibers during handling, routing and connectorization. Yarn strength members keep the tensile load away from the fiber.
As with loose-tube cables, optical specifications for tight-buffered cables also should include the maximum performance of all fibers over the operating temperature range and life of the cable.
Related:
UTStarcom launches PTN 735 packet-optical transport platform
UTStarcom Holdings Corp. (NASDAQ: UTSI) has expanded its NetRing TN line of packet-optical transport systems with the upgraded PTN 735.
The newly upgraded PTN 735 product offers unified loading capacity and improved processing capacity. The upgrade enhances the quality of service that customers can provide, while its improved design and smaller size helps improve profitability, UTStarcom asserts.
The company says it successfully completed a field trial of the PTN 735 with SOFTBANK BB Corp. in 2010, after which SOFTBANK deployed the platform throughout Japan.
UTStarcom has offered its NetRing TN Packet Transport Network (PTN) systems since 2006. The NetRing TN is based on the MPLS-TP.
Related:
Multiwavelength optical networking
Multiwavelength optical networking (MONET), is a method for communicating digital information using lasers over optical fiber.
The method provides the next level of communication networks after SONET optical networks. MONET optical networks provide an even greater bandwidth capacity.
This new method employs Wave division multiplexing (WDM) technology for transporting large amounts of telephone and data traffic and allow for interoperability between equipment from different vendors.
First developed by the secretive National Security Agency as author James Bamford points out in his book, "Body of Secrets: Anatomy of the Ultra-Secret National Security Agency". It was also discussed at the 1996 Military Communications Conference.
Related:
http://geponsolution.blog.fc2.com/blog-entry-168.html
This new method employs Wave division multiplexing (WDM) technology for transporting large amounts of telephone and data traffic and allow for interoperability between equipment from different vendors.
First developed by the secretive National Security Agency as author James Bamford points out in his book, "Body of Secrets: Anatomy of the Ultra-Secret National Security Agency". It was also discussed at the 1996 Military Communications Conference.
Related:
http://geponsolution.blog.fc2.com/blog-entry-168.html
2013年5月21日星期二
The advantages of using fibre optics
Because of the Low loss, high bandwidth properties of fiber cable they can be used over greater distances than copper cables, in data networks this can be as much as 2km without the use of repeaters. Their light weight and small size also make them ideal for applications where running copper cables would be impractical, and by using multiplexors one fibre could replace hundreds of copper cables.
This is pretty impressive for a tiny glass filament, but the real benefits in the data industry are its immunity to Electro Magnetic Interference (EMI), and the fact that glass is not an electrical conductor. Because fibre is non-conductive, it can be used where electrical isolation is needed, for instance between buildings where copper cables would require cross bonding to eliminate differences in earth potentials. Fibres also pose no threat in dangerous environments such as chemical plants where a spark could trigger an explosion. Last but not least is the security aspect, it is very, very difficult to tap into a fibre cable to read the data signals.
Related:
pci-e network card
First a bit history
In 1870, John Tyndall demonstrated that light follows the curve of a stream of water pouring from a container, it was this simple principle that led to the study and development of applications for this phenomenon. John Logie Baird patented a method of transmitting light in a glass rod for use in an early colour TV, but the optical losses inherent in the materials at the time made it impractical to use.
In the 1950's more research and development into the transmission of visible images through optical fibres led to some success in the medical world, as they began using them in remote illumination and viewing instruments. In 1966 Charles Kao and George Hockham proposed the transmission of information over glass fibre, and they also realised that to make it a practical proposition, much lower losses in the cables were essential. This was the driving force behind the developments to improve the optical losses in fibre manufacturing, and today optical losses are significantly lower than the original target set out by Charles Kao and George Hockham.
Related:
TE Connectivity wins $400 million network connectivity contract for Australian NBN high-speed broadband rollout
TE Connectivity (formerly Tyco Electronics) won a five-year, $400 million contract from NBN Co. to supply network connectivity products for the Australian government's National Broadband Network (NBN) program. The NBN program will bring high-speed broadband services to Australia. To date, TE Connectivity and ADC have supplied more than $4 million of passive optical equipment into NBN Co's First Release sites, which are currently well under construction. TE Connectivity acquired ADC in December 2010.
"We are thrilled to have been selected again as an NBN Co partner and we look forward to continuing our strong relationship. This is a very important program for NBN Co and for the citizens of Australia. We are proud to be part of the team that will bring high-speed broadband services to Australia," says Alan Clarke, president of TE Connectivity's Network Solutions segment.
Related:
2013年5月17日星期五
PTGi wraps Australian operations sale to M2
Primus Telecommunications Group Inc. (NYSE:PTGI) has completed its $195.7 million sale of its Australian unit to M2 Telecommunications Group.
With the deal complete, PTGi put about $9.8 million in an indemnification escrow in the event that there are indemnification claims by M2 following the closing.
The service provider's board of directors is now considering how it will use the proceeds from the sale, including new capital investments, note repurchases or redemptions, special dividends and share repurchases.
In addition to its Australian operations sale, the service provider's special committee is examining a number of options for the company, including a sale, merger, joint venture agreements, or the sale or spinoff of other PTGi business units. The timing of the deal was interesting because it happened after it established a wholesale agreement to offer services via Australia's National Broadband Network in January. This agreement would have enabled it to compete with incumbent Telstra.
Meanwhile, Primus Canada has been divided up into two different organizations: a data center business and another serving residential and business customers.
related:
SPD Arrest Man for Stealing $150K of Fiber Optic Cable
The Sarasota Police Department said Officer Jason Frank was on patrol on May 7 when he observed a red Chevrolet van parked on the sidewalk in the 700 block of S. Tamiami Trail.
Frank pulled up behind the suspicious vehicle and as he made contact with the driver, Manuel De Jesus Tena, 49, the officer observed that the driver was very nervous, according to a SPD release.
SPD said Frank observed a large spool of black cable in the back of the van. He also could see similar cable hanging from a telephone pole that appeared to have been cut. Frank asked Tena if he was ok, and why he was parked on the sidewalk. According to SPD, Tena turned and pointed at the spool of cable and stated, I stole it, I was going to try to sell it. I've been out of work for three years.Wire cutters were found in the pocket of Tena's shorts.
Tena was arrested for Grand Theft. The fiber optic cable is 24,624 feet long and is valued at $6.00 per-foot. Total value in cable was in excess of $150,000; however the cable was recovered by the officers. Tena was charged with Grand Theft (in excess of $100,000) and Criminal Mischief (damage to property in excess of $1,000).
Related:
KC finds stronger-than-expected fibre broadband take-up
East Yorkshire internet service provider (ISP) KC saw its revenues increase in the year to March 31st 2012, partially driven by the strong performance of its fibre optic broadband product.
The company's turnover for the 12-month period stood at £103.6 million, up by 1.1 per cent on the pound 102.5 million it earned during the previous financial year.
Explaining the result, KC said it benefited from increasing demand for higher bandwidth services from business customers and growth in the consumer market thanks to the continued migration of subscribers to bundled packages.
In addition, the company was boosted by more customers upgrading to its home phone service KC Talk, while early indications suggest a higher-than-expected level of take-up for its fibre optic broadband service.
The ISP is currently rolling out 100Mbps broadband throughout east Yorkshire and is looking to deliver the technology to 15,000 properties by the end of 2012.
Last month, KC deployed its 100Mbps service to the market town of Driffield, allowing local residents to download a typical music album in just five seconds and a high-definition film in around seven minutes.
Related:
2013年5月16日星期四
Security implications of software-defined networks
With only a handful of very small software-defined networks actually in production around the world, most SDN conversations are purely academic. But that hasn't impeded the interest and announcements that seem to be on an accelerated pace in recent weeks and months (see sidebar below). Why the flurry of announcements? The reason is because of the enticing potential of SDNs.
By separating the control plane from the data plane, which essentially removes and then centralizes the brains from the muscle of the network, you can quickly make changes to improve the speed, reliability, efficiency and even security of that network. You control the network's layout and flow, so you can define and distribute loads, optimize and prioritize traffic, and scale services or capacity up or down with just a few clicks, that is in theory. That's the key. Commercially available solutions that enable you to realize the potential of SDNs are simply not there yet. Assuming they are on their way, from vendors, such as IBM (NYSE: IBM), NEC, HP (NYSE: HPQ), Big Switch, Nicira, and still unknown/unannounced players, it's important to think through some of the security implications of this new architecture.
Related：
XLerate High-Speed I/O Cabling Provides of FCI Speeds up to 120Gb/s in Copper & Fiber Optic
FCI has launched a new line of high-speed I/O cabling solutions. The XLerate is available in bandwidths from 10Gb/s up to 120Gb/s, in both copper and fiber optic options, making the product line an ideal fit for data center, high-performance computing, and switching applications.
The XLerate portfolio comprises copper and fiber optic solutions that deliver aggregated bandwidth ranging from 10Gb/s up to 120Gb/s in various industry standard-compliant interfaces. The product line is cost-effective in that it simplifies the design process by providing a limited number of discrete components in the link; additionally, it allows installers, OEMs, and VARs to go to one source for connectors, EMI cages, transceivers, and optical and copper cable assemblies. The XLerate solutions support both Infiniband and Ethernet protocols.
XLerate cabling is plug-and-play, and active optical cables (AOC) provide a closed optical system for worker safety and protect the cable from dust contamination. The assemblies are 100% final tested, assembled in a clean room environment, provide optimum signal integrity, and an aggregate bandwidth of up to 120Gb/s.
Related：
2013年5月15日星期三
Fiber protection boxes expand Clearfield’s CraftSmart line
Clearfield, Inc. (Nasdaq:CLFD) has added CraftSmart Fiber Protection Boxes (FPB) to its CraftSmart product line, the company says. This is the second recent expansion of the CraftSmart portfolio, following the CraftSmart Fiber Protection Pedestals and Vaults (see Clearfield introduces CraftSmart enclosure line for optical protection). The CraftSmart products are designed to complement Clearfield’s FieldSmart platform of inside plant fiber panels, outside plant cabinets, and wall boxes.
Similar to the CraftSmart vaults and pedestals, the boxes are designed to meet a range of fiber, coax, and copper applications within the broadband, telecommunications, and utilities industries, including fiber to the home (FTTH). The FPBs can be used for below-grade cable slack storage in greenbelt areas; undeveloped, wild, or agricultural areas; and similar applications where there is light pedestrian traffic, such as a sidewalk, Clearfield says.
The CraftSmart Fiber Protection Box is available in five different sized boxes:
FPB610 (6 round)FPB912 (9 round)FPB1111 (11)FPB1320 (13)FPB1620 (16).
The body is formed with a High Density Polyethylene (HDPE) Thermoplastic and a solid Thermoplastic lid for strength and stability of the product.
Related:
http://bbs.cxanju.com/home.php?mod=space&uid=98295&do=blog&id=13553
http://www.shenmo.us/forum.php?mod=viewthread&tid=398877
http://bestforexib.com/forum.php?mod=viewthread&tid=55051
Premises Networks
Premises networks, mostly computer LANs (local area networks) use fiber optics primarily in the backbone but increasingly to the desk and to connect wireless access points. The LAN backbone often needs longer distances than copper cable (Cat 5/5e/6/6A) can provide and of course, the fiber offers higher bandwidth for future expansion. Fiber's ability to handle network upgrades meant that one fiber type outlived nine generations of copper cables in LANs. A new fiber type (OM3) offers future potential for upgrades while copper continues to struggle with network speed increases.
Until recently large corporate LANs use fiber backbones with copper wire to the desktop. LAN switches and hubs are usually available with fiber optic ports but PCs have interfaces to Ethernet on copper. Inexpensive media converters allow connecting PCs to fiber. Fiber to the desk can be cost effective if properly designed using centralized fiber architecture without local switching in the telecom closet, but many users no longer want to be tethered to a network cable. Desktop computer sales are declining and laptops are the PC of choice for most users, with wireless connections to the network. Generally only high data users like engineers and graphics designers use desktop workstations; everybody else gets a wireless-connected laptop.
More on premises networks and fiber in premises networks.
Related：
http://www.tmallbox.com/forum/forum.php?mod=viewthread&tid=82008
http://geponsolution.blog.fc2.com/blog-entry-160.html
http://www.art136.com/bbs/read.php?tid=486354
What is Waterproof Fiber Pigtail
Waterproof fiber pigtails can be used in harsh environment. It is mainly used in outdoor connection of the optical transmitter. Waterproof fiber pigtail is designed with a stainless steel strengthened waterproof unit and armored outdoor PE jacketed cables.
Waterproof fiber pigtails are widely used in data transmission network, typical types are with 2 fiber cores, 4 fiber cores or 8, 12 fiber cores. By adopting the special structure cables and connectors, these fiber cable assemblies are widely used in CATV and other applications.
LFO provides waterproof pigtail, assemblies fiber pigtail with ST, FC, SC, LC, MU, MTRJ, E2000.... fiber Connector, Single mode and multi mode.
Our waterproof fiber pigtails are with strong PE jacket and waterproof sealed head connectors. Easily and reliable installment, long life, good toughness, and well done in the serious environment are their characteristics. Our waterproof fiber pigtails strictly according to IEC standards, the products feature low insertion loss, high return loss, good interchange ability and repeat push-pull performance, which make them easy to use.
Besides waterproof fiber pigtails, we also offer Fiber Patch Cord, Buddle Fan out Patch cord, MPO Fiber Patch cord, Loopback Fiber Patch cord, Mode Conditioning Cable, 10G Fiber patch cord, Armored fiber patch cord for your different application.
Related;
http://sfpdirectattchcopper.unblog.fr/2013/05/15/the-fiber-optic-association/
http://edfa1.blog.fc2.com/blog-entry-180.html
http://sfpdirectattchcopper.unblog.fr/2013/05/15/vtx-telecom-taps-enablence-for-broadband-stimulus-project/
2013年5月8日星期三
Spirit Communications fans out EoC presence with Overture Networks
Spirit Communications, a CLEC jointly owned by 11 South Carolina independent ILECs, is extending its Ethernet over Copper (EoC) in its North and South Carolina territories.
Leveraging Overture Networks' EoC gear that it purchased from the former Hatteras Networks, the CLEC's Business Elite Ethernet service delivers SMBs 3-10 Mbps speeds.
Having seen what it says is "notable growth throughout the Carolinas," the expansion of its EoC footprint complements the ongoing expansion of its fiber-based Metro Ethernet service for medium and large businesses, including the State of South Carolina.
While it had a strong presence in the medium and large business market with its fiber-based Metro Ethernet solutions, EoC is proving to be a sound solution for the SMB market.
"We have a very good multi-location customer base, but we hadn't really spend a lot of energy on that smaller business customer, and that's the primary focus of the EoC roll out," said Greg Guerra, Spirit executive vice president of Strategy, Product Management and Business Development, in an interview with FierceTelecom.
After launching its Business Elite EoC voice and data bundle last year for SMBs, Guerra added it has seen continued demand for its voice and Internet bundles, including traditional PRI and IP-based SIP trunking.
"We launched our Business Elite EoC service in roughly 10 markets in South Carolina, and that was met with much success so we really started to increase our volume at the low end of the market and so we have since doubled that footprint this year with Overture," he said.
And while its main focus is on serving South Carolina, the CLEC is also expanding the service into North Carolina and Georgia.
Related:
PD media converter
10G media converter
http://blogs.realtown.com/sopto/2013/05/08/what-is-ceramic-ferrule/
Maturity of Metro Ethernet
A comparison of MPLS-based Metro Ethernet against a pure Ethernet MAN: Scalability: In a properly designed Ethernet VLAN network, each switched path can have 4094 single tag VLANs. Some aggregation and core switches can classify traffic by two VLANs using IEEE 802.1ad VLAN stacking, so with such aggregation devices properly placed in the center of a network, end segments and rings of single tag devices can receive only the traffic that they need.
When using MPLS, Ethernet VLANs have local meaning only (like Frame Relay PVC). Same scalability considerations apply to the MAC addresses where in a pure Layer 2 Ethernet MAN all MAC addresses are being shared across the network, although this issue can be managed by smart network design and choosing switches with MAC tables sufficient for the size of network segments.
Resiliency: pure Ethernet network resiliency relies on Spanning Tree Protocols STP, IEEE 802.1w RSTP or IEEE 802.1s MSTP (30 to sub 50ms sec convergence depending on network design) while MPLS-based MANs use mechanisms such as MPLS Fast Reroute to achieve SDH-like (50 msecs) convergence times. Metro Ethernet can also utilise Link aggregation or Resilient Packet Ring where appropriate to add link redundancy and recovery in distribution networks. Some Ethernet vendors' RSTP convergence is also sub-50ms, but this convergence time may vary from vendor to vendor.
Ethernet protection switching is also standardised in (ITU G.8031).Multiprotocol convergence: with the maturity on pseudowires standards (ATM Virtual Leased Line VLL, FR VLL, etc.) an MPLS-based Metro Ethernet can backhaul IP/Ethernet traffic together with virtually any type of traffic coming from customer or other access networks (i.e. ATM aggregation for UMTS or TDM aggregation for GSM), while this could be more challenging in a pure Ethernet scenario.
Related:
Multi UTP media converter
SFP OEO media converter
http://blogs.realtown.com/sopto/2013/05/08/what-is-ceramic-ferrule/
Rural community fibre optic broadband project
The project involves delivering fibre to the home (FTTH) with cables stretching nearly 300km and connecting 1,452 households.
Fibre optic broadband is being rolled out in urban areas, but internet service providers consider it uneconomical to lay cables in rural areas.
"It's not that rural people don't have options, there's satellite and wireless for example, but the best option is optical fibre and rural people shouldn't be excluded from this," says Mrs Conder.
This is a huge project, which requires a lot of volunteers to make it work. Local farmers dig the trenches using their own machinery and provide up to £2m for materials. Other funding is being raised through the sale of shares.
Digging has only just begun, but the first houses could be connected in a matter of weeks.
Although it is not a requirement, most of those who want a connection have purchased B4RN shares at pound;1 each. Shares are non-transferable, but are withdrawable and only redeemable at par so there is no opportunity for a capital gain. However, they can attract annual interest and offer tax relief.
Installation will cost B4RN around pound;1,000 a household, with about 60% of that accounted for by materials rather than labour.
The cables usually laid by telecommunications companies are beneath roads and other infrastructure, which are not necessarily the most straightforward routes.
This is mostly because it is easier to get permission to lay cables under highways than to seek permission from many different landowners. B4RN is able cut some of these costs by directly negotiating with landowners for wayleaves.
Because many of the landowners are involved in the project and it is not for capital gain, getting their permission is not usually a problem.
Related;
management fiber switch
SM to MM media converter
http://soptofiber.blog.fc2.com/blog-entry-101.html
2013年5月6日星期一
Windstream provides new cloud-based disaster recovery service
Windstream (Nasdaq: WIN) is giving mid-market businesses another cloud entry point with its new Disaster Recovery as a Service (DRaaS) solution.
Building on the cloud infrastructure footprint it gained from its acquisition of Hosted Solutions, DRaaS is a fully hosted and managed disaster recovery solution that offers replication and cloud technologies.
The drive here is about unburdening a business from having to build their own disaster recovery capabilities themselves. By handing these processes to Windstream, they can replicate and recover critical servers and data center infrastructure in the cloud at a lower cost.
But the new solution is not just about reducing costs. Rob Carter, Windstream's director of managed hosted solutions, said a "fully managed Disaster Recovery as a Service solution also reduces the burden of infrastructure tasks and expertise during the testing or real world enactment of disaster recovery plans on businesses."DRaaS, which is available now, can address various business environments: host-based replication or storage-based replication for EMC and NetApp customers; remote NetApp systems with support for SnapMirror and SnapVault replication; managed recovery to public, private or hybrid cloud environments with recovery points for key business applications; and integration with customers' existing VPN or private network solutions.
While businesses still have concerns about using cloud services, a 2011 Forrester Research survey revealed that two-thirds of those surveyed said that they "considered Disaster Recovery to be of high or critical importance in the decision to adopt cloud services."Being a relatively new player in the cloud and data center market, the new DRaaS solution will give Windstream another weapon to differentiate itself from not only its fellow telco competitors, including Verizon/Terremark (NYSE: VZ) and CenturyLink (NYSE: CTL), but also against aggressive colocation providers such as FiberMedia.
Related：
South Slope deploys BTI Systems Dynamic Optical Layer technology
BTI Systems says that South Slope Cooperative Communications, the largest rural independent operating company (IOC) in Iowa, has replaced its existing three-vendor SONET, DWDM, and Ethernet infrastructure with its equipment. South Slope has integrated BTI's Dynamic Optical Layer, SLA Portal, and mobile backhaul offerings, according to the systems vendor.
South Slope has deployed a wide range of BTI systems and services, including:
BTI Dynamic Optical Layer, which combines ROADM, and end-to-end service and path-centric management capabilities;BTI 7000 Series packet-optical transport platform;BTI 700 Series platform;BTI proNX Service Management monitoring, control, provisioning, and planning suite;BTI proNX SLA Portal, which enables tracking, reporting, and real-time access to SLA data;BTI professional services support for project management, installation, and turn-up.
"As a key player in the Cedar Rapids/North Liberty/Iowa City Tech corridor we are committed to providing our customers with the best possible service now and in the future," said Justyn M. Miller, CEO South Slope. "With BTI, we have installed the best network foundation to scale our network and support new broadband multimedia services. Broadband revenue streams are critical under the new FCC rulings. As a partner BTI understands our business and we deployed our state-of-the-art network on-time and on-budget."BTI's first deployed Dynamic Optical Layer customer in North America, South Slope has installed the company's packet-optical transport system to connect all of its exchanges. The service provider also will use BTI's service-centric tools to provision, alarm, and troubleshoot the network from the core to the business customer or individual cell sites. The SLA portal will enable them to measure, monitor and report on the performance of the network while meeting the mobile operators SLA requirements with a self-branded and customizable tool.
related:
Optical fiber door
The laying of the cable households, is to make you and your family can enjoy high-speedInternet, IPTV high-definition video and telephoneThe basis of other information services, will use smaller cable (similar to the flat power cord), in conditions permitting,Home to provide you with the cable there are three main ways:
1) penetrating the home through underground pipe can be put through to the homecable box, or fiber optic panel connector information.
2) No home underground pipe or underground pipe could not wear through the multi-layer, high-rise and other apartment-style housing is available through existingHome floor corridor wall holes or openings means (usually in the entry office) into fiber optic cable. In your household will be along within theBaseboard, door frames, corner, etc., with beautiful cloth wiring to fiber optic cable into thedevice is installed.
3) The old neighborhood or rural residential areas (only the second floor and underconstruction), through the existing buildingBuildings exterior home hole (soil air pores) or building wall opening means (usually in thewindow at) the introduction of fiber optic cable.In your household will be along within a foot baseboard, door frames, corner, etc., usingbeautiful fabrics into the wiring to fiber optic cable setEquipment is installed.
Related：
2013年5月2日星期四
2010 market frorecast-Strong quantity growth in fiber connector
2010 market frorecast-Strong quantity growth in fiber connector, mechanical splice consumption. The worldwide consumption value of fiber optic connectors and mechanical splices will reach $2.5 billion according to a recent report from Electroni Cast Consultants. The report, which covers the years 2008-2013, pegs consumption at $1.658 billion in 2008 with the expectation of a relatively flat” 2009, ElectroniCast says, due to the multi-industry worldwide economic crisis.
Of the $2.5 billion to be consumed in 2013, the AmericasSouth, Central, and Northwill account for nearly $1.4 billion. Over the five-year span covered in the report, strongly rising quantity growth will be partially offset by declining average prices.
Stephen Montgomery, president of international business with ElectroniCast, explained the market dynamics that will shape the industry over the next few years. Technological advances in fiber optics are assuring the migration of fiber closer and closer to the end user, which then translates into demand for shorter and shorter links including board-to-board interconnects where connectors represent a substantial share of the total cable assembly and packaging cost, he said.
The cost concerns are being addressed with smaller, lower-cost and easier-to-install discrete single-fiber as well as array-fiber connectors for board-to-board interconnect inside a box. Multi-fiber connector use, defined as more than two fibers, is rapidly growing and is becoming one of the choices for high-fiber and high-density interconnect applications.
The 283-page report, which includes an additional 320 database-spreadsheet pages, is available from ElectroniCast for $7,200. In it, 2008-2013 forecasts are presented for each significant fiber-optic connector and mechanical splice used in selected communications applications. The market data are segmented into geographic regions and summarized globally.
related;
ethernet transceiver
gigabit media converter
http://mediaconverterc.wordpress.com/2013/05/02/10g-optical-buffer/
1550-nm Loss-Minimized Fiber
he ITU-T G.654 fiber is optimized for operation in the 1500-nm to 1600-nm region.
This fiber has a low loss in the 1550-nm band. Low loss is achieved by using a pure silica core. ITU-T G.654 fibers can handle higher power levels and have a larger core area. These fibers have a high chromatic dispersion at 1550 nm. The ITU G.654 fiber has been designed for extended long-haul undersea applications.
Related：
difference between xfp and sfp
Cisco Twinax Cable 1m
http://mediaconverterc.wordpress.com/2013/05/02/10gbase-t-and-10g-sfp-shows-big-with-new-switches/
330Mbps Fibre-Optic Broadband of BT Ready to Roll
BT Openreach will reportedly be opening up its super-fast 330Mbps fibre-optic broadband network for general use after its UK trial ends on June 11. The service uses a direct fibre-to-the-premises (FTTP) connection.
FTTP is faster but also more complex to fit than the conventional fibre-to-the-cabinet system as used by Virgin Media – where fibre-optic lines run to a service box down the road, with the final connection made with standard copper wiring.
As the network provider, BT Openreach will be offering three speed categories: one with a top download speed of 80Mbps (and upload of 20Mbps) and two versions of the 330Mbps service, one with a 20Mbps upload speed and another with 30Mbps.
A 220Mbps option is said to follow in early 2013. The final cost to the consumer will depend on which internet service providers sign up to use the network and how they set their pricing. Obviously BT's retail division will be among them.
According to Recombu, the wholesale trade price table shows an £80 connection fee and pound 60 per month fee for the top-tier 330/30Mbps service, so an end-user's tariff would be higher than that and have VAT as well. Heavy business users will be better placed to take advantage of the increased speeds at first.
However, reduced prices will initially be offered to ISPs for some options, including the 80/20Mbps and 330/20Mbps services, so we can expect those cost savings to be passed on to customers make the final pricing at least a bit more attractive.
BT recently announced that its general fibre broadband service is now available to 10 million premises across the UK and that this roll-out is several months ahead of schedule.
related:
difference sfp sfp+
Cisco Twinax Cable 3m
http://www.realtown.com/sfpdirectattachcables/blog/3ms-one-pass-mini-fiber-pathway-takes-discreet-fiber-installation-inside-the-living-unit/
2013年4月27日星期六
Contention resolution
Whenever two or more data packets arrive at a network node at the same time and contend for the same output, external blocking occurs. All packets but one are perceived as superfluous, and have to be dealt with. Next to the obvious choice of dropping all excess packets, academic literature typically presents three solutions: buffering, deflection routing or wavelength conversion. Optical buffering uses fiber delay lines (FDLs) to delay the light, and is regarded as the most effective, but comes with the additional cost of the FDLs.
Implementation of optical buffers.As light cannot be frozen, an optical buffer is made of optical fibers, and is generally much larger than a RAM chip of comparable capacity. A single fiber can serve as a buffer. However, a set of more than one is usually used. A possibility, for example, is to choose a certain length D for the smallest fiber, and then let the second, third... have lengths . Another typical example is to use a single loop, in which the data circulates a variable number of times.
Related:
BIDI GBIC
CWDM
http://cwdmdwdm.blogspot.com/2013/04/connectors-terminations-with-fiber.html
Consumer and industry perspectives
There are two points of view into the ISDN world. The most common viewpoint is that of the end user, who wants to get a digital connection into the telephone network from home, whose performance would be better than a 20th century analog 56K modem connection. Discussion on the merits of various ISDN modems, carriers' offerings and tariffs (features, pricing) are from this perspective.
Since the principal consumer application is for Internet access, ISDN was mostly superseded by DSL in the early 21st century. Inexpensive ADSL service offers speeds up to 384 kbit/s, while more expensive versions are improving in speed all the time. As of fall 2005, standard ADSL speeds are in millions of bits per second.
There is a second viewpoint: that of the telephone industry, where ISDN is a core technology. A telephone network can be thought of as a collection of wires strung between switching systems. The common electrical specification for the signals on these wires is T1 or E1. Between telephone company switches, the signaling is performed via SS7. Normally, a PBX is connected via a T1 with robbed bit signaling to indicate on-hook or off-hook conditions and MF and DTMF tones to encode the destination number. ISDN is much better because messages can be sent much more quickly than by trying to encode numbers as long (100 ms per digit) tone sequences. This results in faster call setup times. Also, a greater number of features are available and fraud is reduced.
ISDN is also used as a smart-network technology intended to add new services to the public switched telephone network (PSTN) by giving users direct access to end-to-end circuit-switched digital services and as a backup or failsafe circuit solution for critical use data circuits.
Related:
Construction of photonic-crystal fiber
Generally, such fibers are constructed by the same methods as other optical fibers: first, one constructs a preform on the scale of centimeters in size, and then heats the preform and draws it down to a much smaller diameter (often nearly as small as a human hair), shrinking the preform cross section but (usually) maintaining the same features. In this way, kilometers of fiber can be produced from a single preform. The most common method involves stacking although drilling/milling was used to produce the first aperiodic designs. This formed the subsequent basis for producing the first soft glass and polymer structured fibers.
Most photonic crystal fibers have been fabricated in silica glass, but other glasses have also been used to obtain particular optical properties (such has high optical non-linearity). There is also a growing interest in making them from polymer, where a wide variety of structures have been explored, including graded index structures, ring structured fibers and hollow core fibers. These polymer fibers have been termed MPOF, short for microstructured polymer optical fibers (van Eijkelenborg, 2001). A combination of a polymer and a chalcogenide glass was used by Temelkuran et al. (2002) for 10.6 µm wavelengths (where silica is not transparent)
Related:
csfp alactel lucent
GBIC Transceiver
http://fiberoptic.jigsy.com/entries/fiber-adapter/confidentiality-and-integrity
2013年4月25日星期四
ATT trusts IP DSLAMs could solve its rural broadband problem
ATT (NYSE: T) is considering breathing new life into its rural wireline networks to deliver broadband services, a move that goes against its recent drive to divest what it believes are underperforming assets.
As reported by Bloomberg, CEO Randall Stephenson said during a JPMorgan Chase Co. call with investors that ATT would leverage IP DSLAMS to offer a higher speed DSL service. A sale of its rural lines would not be all that far-fetched, as fellow RBOC Verizon (NYSE: VZ) sold its rural lines in 14 states to Frontier Communications (Nasdaq: FTR) in 2010.
In addition to its Yellow Pages business, ATT previously said it viewed its rural networks as underperforming assets that could hold back future company growth. The service provider sold a large stake in its Yellow Pages business to Cerberus Capital Management for $950 million in April.
When it could not complete its acquisition of T-Mobile USA in January, one that the service provider thought could be used to offer wireless-based broadband to rural customers, Stephenson said it did not have any solution for its rural broadband issues.
While ATT has yet to make an official announcement on its actual strategy, Stephenson said that the advent of IP DSLAMs could be an option to solve the rural wireline broadband problem.
We are giving this a hard look, he said. IP DSLAMs bring broadband capability in a more cost-effective manner, with a better revenue profile than perhaps we would have thought two years ago.
But even with the advent of IP DSLAMs, the challenge in rural areas is that most homes are too far from existing RTs and COs in addition to the varying conditions of copper lines.
Related;
sfp sfp+
difference between loose tube and tight buffered fiber
http://mediaconvertera.wordpress.com/2013/04/25/application-of-fiber-art/
ATT investors nix proposal to split CEO and chairman roles
ATT (NYSE: T) investors decided against a plan to split chairman and CEO into separate positions, during its recent annual meeting in Salt Lake City.
Investors' decision not to separate the chairman and CEO jobs was reached by a vote of 56 percent to 44 percent.
Those who voted for an independent chairman argued they wanted additional oversight over ATT's chief executive officer, Randall Stephenson. They argued, specifically, that Stephenson's $28 million in total compensation in 2011 was excessive.
However, ATT's board maintained that the service provider had a lead independent director, and the combined CEO-chairman role was a way to bridge the gap between the board and management.
A separate proposal to issue a semiannual report on the company's political contributions was defeated by a vote of 38 percent to 61 percent.
In announcing its board meeting results, ATT noted that executive pay was approved 93 percent to 7 percent.
Meanwhile, the ATT board rejected a proposal to incorporate net-neutrality rules on its wireless network.
Related:
cord patch
sm to mm converter
http://10gmodule.wordpress.com/2013/04/25/applications-of-multi-mode-optical-fiber/
ATT costs $375 million to improve network services in San Antonio
During 2011, ATT made nearly 400 wireless network upgrades in San Antonio focusing on four key categories, the company announced.
These enhancements include:
Activating more than 10 new cell sites or towers to improve network coverage.
Deploying faster fiber-optic connections to more than 325 cell sites.
Adding approximately 50 extra layers of capacity to cell sites, which ATT equates to adding lanes to a highway.
Upgrading 10 cell sites to provide faster mobile Internet speeds.
In addition, ATT launched its 4G LTE service in the San Antonio area on Sept. 19, 2011.
Overall, ATT invested more than $375 million in its San Antonio area wireless and wireline networks from 2009 through 2011.
Our goal is to deliver a network experience that mobilizes everything for customers, says Chris Penrose, vice president and general manager of AT&T South Texas. The ongoing investment we’re making in San Antonio is designed to increase coverage and reliability, and to provide advanced services to our customers.
Dallas-based ATT (NYSE: T) operates one of the nation's largest Wi-Fi networks with nearly 30,000 ATT Wi-Fi hotspots in the U.S. and provides access to nearly 225,000 hotspots globally through roaming agreements.
related:
fiber optic multiplexer
fiber optic adapters
http://mediaconverterb.wordpress.com/2013/04/25/an-optical-power-meter-sensor/
ATT certifies Kirksville Industrial Park
A multinational corporation is helping out the city of Kirksville in a big way.
John Sondag, the President of ATT Missouri, was in Kirksville Wednesday afternoon to speak with local leaders about the company's investment in the city and to certify Kirksville Industrial Park as an ATT certified fiber park.
ATT recently placed fiber optic cable in the area, ensuring the best landline and mobile technology for businesses.
The certification will help in marketing the area to companies looking to relocate or expand in Kirksville.
We're very excited about the opportunity that it's going to bring to the city of Kirksville to expand this industrial park. I think city leaders can market this to people throughout the country and the world, Sondag said.
It's a wonderful opportunity to market our area because when a business wants to locate, they want to be in a building that has everything they need. So now with ATT has invested in our park, what that means is that a business can come here and build without spending money on the fiber optics they need, said Carolyn Chrisman, Director of Job Creation for K-REDI.
Everyone hopes that this will help create new jobs and improve the city's economy.
It's going to attract businesses. It's going to allow local businesses in the area to grow. I think it will create new jobs. I think it's good for the Kirksville economy, Sondag said.
ATT has done us a great service. Now we can market companies to come and locate in Kirksville, Chrisman said.
The announcement took place at the Kirksville Rotary Club meeting. Afterwards, a ribbon cutting ceremony took place at the industrial park.
Sondag said he's excited and positive about Kirksville's future.
We're very proud to make the investment here. Kirksville is a very important city, and a community for us to serve, Sondag said.We're very happy that we were able to bring this here to help this community continue to grow.
Related:
fiber closure
fiber optic cable
http://sopto10gmodule.wordpress.com/2013/04/25/analysis-by-the-optical-fiber-cold-into-in-theory/
2013年4月24日星期三
Crossover cable pinouts
In practice, it does not matter if non-crossover Ethernet cables are wired as T568A or T568B, just so long as both ends follow the same wiring format. Typical commercially available "pre-wired" cables can follow either format depending the manufacturer.
What this means is that one manufacturer's cables are wired one way and another's the other way, yet both are correct and will work. In either case, T568A or T568B, a normal (un-crossed) cable will have both ends wired according to the layout in the Connection 1 column.
Although the Gigabit crossover is defined in the Gigabit Ethernet standard, in practice all Gigabit PHYs feature an auto-MDIX capability and are designed for compatibility with the existing 100BASE-TX crossovers. The IEEE-specified Gigabit crossover is generally seen as unnecessary.Certain equipment or installations, including those in which phone and/or power are mixed with data in the same cable, may require that the "non-data" pairs 1 and 4 (pins 4, 5, 7 and 8) remain un-crossed.
Related:
http://www.argentciel.com/ousudz/trunk/upload/forum.php?mod=viewthread&tid=205074
http://bestforexib.com/forum.php?mod=viewthread&tid=54832
http://www.shenmo.us/forum.php?mod=viewthread&tid=81264
Cross Section of Inside-Plant Cables
The individual fibers have a strippable buffer coating. All six subunit buffer tubes are enclosed within a binder that contains an interstitial filling or water-blocking compound. An outer strength member, typically constructed of aramid Kevlar strength members encloses the binder. The outer strength member is surrounded by an inner medium-density polyethylene (MDPE) jacket.
The corrugated steel armor layer between the outer high-density polyethylene (HDPE) jacket, and the inner MDPE jacket acts as an external strength member and provides physical protection. Conventional deep-water submarine cables use dual armor and a special hermetically sealed copper tube to protect the fibers from the effects of deep-water environments. However, shallow-water applications use cables similar to those shown in Figure 3-7 with an asphalt compound interstitial filling.
related:
http://bestforexib.com/forum.php?mod=viewthread&tid=54831
http://www.xuetong.com/bbs/forum.php?mod=viewthread&tid=1165016
http://bbs.cxanju.com/forum.php?mod=viewthread&tid=1153381
Construction of photonic crystal fibers
Generally, such fibers are constructed by the same methods as other optical fibers: first, one constructs a preform" on the scale of centimeters in size, and then heats the preform and draws it down to a much smaller diameter (often nearly as small as a human hair), shrinking the preform cross section but (usually) maintaining the same features. In this way, kilometers of fiber can be produced from a single preform.
The most common method involves stacking although drilling/milling was used to produce the first aperiodic designs.This formed the subsequent basis for producing the first soft glass and polymer structured fibers.
Most photonic crystal fibers have been fabricated in silica glass, but other glasses have also been used to obtain particular optical properties (such has high optical non-linearity). There is also a growing interest in making them from polymer, where a wide variety of structures have been explored, including graded index structures, ring structured fibers and hollow core fibers. These polymer fibers have been termed MPO, short for microstructured polymer optical fibers (van Eijkelenborg, 2001). A combination of a polymer and a chalcogenide glass was used by Temelkuran et al. (2002) for 10.6 μm wavelengths (where silica is not transparent).
Related:
http://www.lobn.net/uch//space.php?uid=56274&do=blog&id=663609
http://www.shenmo.us/forum.php?mod=viewthread&tid=81275
http://www.art136.com/bbs/read.php?tid=200437
2013年4月15日星期一
Itro of PON solution (Passive Optical Networks)
In these modern times, FTTX is during manufacture upon the word, not to mention much of the telecom travel operators take on PON solutions, often called passive optical newworks.
PON solutions
Originally, PON comprise of B-PON, GE-PON and G-PON. Which means what’s typically the improvement consultants, you could learn furthermore there data files for the reason that following:
PON awareness
What’s the main advantage of PON solution?
First, it includes decent full speed data files roughly 1 Gbit/s towards residential not to mention establishments. The second is, her routine service selling price burning owing to certainly no electronics captive market relating to CORP not to mention potential customers. What’s further, it includes low-cost owing to sheets not to mention CORP user interface common from a variety of potential customers. Besides, Steady data files quote regardless get through to different software programs among them data files (IP), picture not to mention phone (triple play).
Related：
http://zerolang.jimdo.com/2013/04/15/kowlege-of-pon-solution-passive-optical-networks/
FTTH ONU design and style pattern
Typically the ONU in FTTH system total need 1-32 Mbps convey that can be connected to many 'network ' terminals.
ONU used in your buyer fatal to find the bottom buyer and / or typically the corridor convert piece of equipment, it again take advantage of the singular optical sheets multiplexed plurality ONU's data files to a particular OLT convey via the passive optical splitter. By means of typically the point-to- multipoint cedar topology, it is able to reduce the convergence funding through hardware, 'network ' quality turn out to be simpler. Virtually all ONU piece of equipment on their own possesses a several characteristic of this convert, typically the uplink user interface might be PON user interface. Connected to typically the typically the OLT piece of equipment user interface block using a passive splitter, downstream attach completely different data files items throughout 1-32 Mbps perhaps even Gigabit RJ45 shipping, along the lines of switches, broadband routers, portable computers, IP cellular phones, set-top container, and so., as a way to get typically the easy deployment from point-to-multipoint.
Related;
http://zerolang.jimdo.com/2013/04/15/ftth-onu-style-layout/
It is new SFP transceivers
Through 2012, through Europe's CeBIT considerable, Intel Produced his or her's following that age bracket server microprocessor (code for the purpose of Romley)，coincidely who time of day, Fruit striked her latest Iphone (3) some stance at the cycle. Latest apple company ipad will bring external usb run needson out of your patient typically the forehead, definitely will inevitably heighten question in the latest server. This unique latest microprocessor probably will make server organisations launched a good solid over, much better, high-speed cable server marketing : it has turn out to be retarded 90 years a long time. Such staff could be shove run in front towards mode house design (top : from : rack) substitute or longer far off. 55 GQSFP raised for staff, SFP transceiver, working optical conductor not to mention straight-through design copper mineral conductor (Direct Install copper), That will improve 55 GQSFP launched a good solid over from progression. Considering that server one might be driving to fast, mode house design server could be 55 gige, last of all might be 100 gige interconnection, which means, Concerning 10G SFP transceiver not to mention straight-through conductor call for definitely will get higher.
Related：
Related：
2013年4月12日星期五
FTTH is a better determination of optical fiber access to home exclusively
For a few place individuals, FTTH is a better opportunity, the design make optical fiber and optical network unit (ONU) affiliated straight to the family, certainly is the a large number of near the visitor also known as fabric discover about several fiber-optic broadband discover additionally FTTD (fiber to laptop, FiberToTheDesk) out of. Along with the specialized generalization for the fabric optic broadband discover, the things has to referred to certainly is the today's FTTH broadband discover isn't really quickly is all the fiber to the home, still relates FTTO, FTTD, FTTN Dietary fibre to place on the create. Sopto offer excellent FTTH products,such as series transceivers,PLC splitter,FTTH tools and similar matters.
Related：
http://sfpdirectattchcopper.unblog.fr/2013/04/12/ftth-is-a-good-solution-of-optical-fiber-access-to-home-direct/
Related：
http://sfpdirectattchcopper.unblog.fr/2013/04/12/ftth-is-a-good-solution-of-optical-fiber-access-to-home-direct/
Added benefits of fiber cable across copper wire
1. Cheaper- A couple of mileage about optical cabl ice is prepared lower priced when compared to counterpart programs about copper wire. This approach holds any carrier (cable TV, Internet) while you finances.
some. Thinner- Fiber cable is interested in reduced diameters when compared to copper wire.
3. More significant toting efficiency - As fiber cable really are high altitude when compared to copper wires, a great deal more staple fibers is incorporated perfectly into a given-diameter cable when compared to copper wires. This enables a great deal more contact marks to debate the equivalent line or further areas that come on the line right into any cable TV box.
have a look at. A lot less value degradation - The loss of value for optical fiber is normally underneath for birdwatcher insert.
5. Lgt symptoms - Nothing like energy symptoms for copper wires, lgt symptoms in one fabric you should never hinder many about other sorts of staple fibers on the equal cable. As a consequence cleaner contact chats or possibly TELEVISION PROGRAMS office reception.
6. Finer extra fat - Any fiber cable weighs in at underneath a fabulous comparable copper wire cable. Fiber optic cables eat up a lot less breathing space on the place.
7. Extended life: Fiber cable mostly take up residence long for approximately beyond a century.
Sopto provides fiber cables by means of various kinds for use on your determination. If you suffer from fascinates, look and feel unengaged to reply, everyone offer all the fiber cable datasheet and additionally top fee for your needs.
Related:
http://zerolang.jigsy.com/entries/general/3com-like-minded-sfp-transceivers-from-sopto
3COM SFP Transceivers right from Sopto
with{ 3COM switches and routers networking{ product lines. Sopto's transceivers are factory loaded with OEM specific configuration data required for networking compliance. These transceivers initialize and perform identically to the OEM transceivers and can be mixed and deployed with other OEM or 3rd party transceivers, for seamless network performance. This SFP transceiver can be used in those 3Com switches and modules which support SFP modules. SFPs can be mixed and matched on a given switch to maximize flexibility.
Sopto's Optical Transceivers and Networking components for network router and switch equipment are individually tested. Sopto provide worldwide shipping from stock,SFP, XFP, SFP+, XENPAK, X2, GBIC,BIDI,CWDM,DWDM,transceiver data rate from 100Mbps to 10Gbps. Contact us to buy and save your money and time than buying from other retailers..
related:
http://mediaconvertera.wordpress.com/2013/04/12/strengths-of-fiber-cable-in-excess-of-copper-wire/
2013年4月11日星期四
China dominant FTTH Asian markets
Currently in The japanese and several Cookware FTTH market
leading countries, GEPON is the mainstream specifications，
it use GPON specifications more which differs from the united states. Future
The depends on whether China uses more GPON or
GEPON, after all, China is undoubtedly the largest FTTH market. In addition, 10G EPON standard Finished in December 2009, strongly suggested for many years 10G
market is finally just around the corner, the next few years will be gradually
principal optical communications market. At the same time, FTTH end-user bandwidth speed is expected to forward to reach 100M. After Fiber-to-the-home market in popularity China will lead the Cookware market to enter bandwidth sustained liter levels.
Related:
http://zerolangfiber.blogspot.com/2013/04/china-dominant-ftth-asiatische-economies.html
leading countries, GEPON is the mainstream specifications，
it use GPON specifications more which differs from the united states. Future
The depends on whether China uses more GPON or
GEPON, after all, China is undoubtedly the largest FTTH market. In addition, 10G EPON standard Finished in December 2009, strongly suggested for many years 10G
market is finally just around the corner, the next few years will be gradually
principal optical communications market. At the same time, FTTH end-user bandwidth speed is expected to forward to reach 100M. After Fiber-to-the-home market in popularity China will lead the Cookware market to enter bandwidth sustained liter levels.
Related:
http://zerolangfiber.blogspot.com/2013/04/china-dominant-ftth-asiatische-economies.html
Fiber modem installation steps
Recently, high-speed Internet access has become an important necessity. People
need different requirements, high-speed computer, whether personal or
professional needs. In order to provide this specific connection, you need to
provide an ultra-high-speed fiber modems, such as one of the fiber varieties. There is no
need to worry because you can put in a few points, it is installed. As an
example, here fiber modem installed on your network can get a few points.
At first, you need to hook the female DB25 connector, run the fiber optic modem of the device. Now, you can take off the connector dust cap. If you don’t need to use the DB25 to provide the ability of your fiber modem, you can simply insert the wall power supply to a wall outlet. Then, you need to add plug-in, you will find near the port of the fiber optic connector.
Second, you need to eliminate the dust cap of the optical output port modem. Now, you can continue to connect fiber modem fiber optic cable fiber optic port.
When connecting the fiber optic cables, you can simply connect the fiber optic cable fiber optic port, by fitting the fiber optic ST connector and the jack of the iceberg. Then you can try to make sets of the key. Maintained at the receiver collar, and then switch clockwise prior to the key lock today, and you are ready to make use of this modem.
It is very easy. Now you can enjoy higher-speed Internet connection. Typical SC fiber optic adapter has plastic housing and single mode SC/UPC adapter is blue color, single mode SC/APC adapter is green color, multimode SC/UPC adapter is beige color.
Sopto is a worldwide leading manufacturer & supplier of fiber optic products. Sopto supply a range of Fiber optic data modem, such as RS-232/RS-485/RS-422 Fiber modem, multimode or single-mode fiber modem, transmission distance up to 2km (multimode) or up to 20km/40km/60km (single-mode).
Related:
http://sfpdirectattchcopper.unblog.fr/2013/04/11/china-dominant-ftth-asian-market-segments/
At first, you need to hook the female DB25 connector, run the fiber optic modem of the device. Now, you can take off the connector dust cap. If you don’t need to use the DB25 to provide the ability of your fiber modem, you can simply insert the wall power supply to a wall outlet. Then, you need to add plug-in, you will find near the port of the fiber optic connector.
Second, you need to eliminate the dust cap of the optical output port modem. Now, you can continue to connect fiber modem fiber optic cable fiber optic port.
When connecting the fiber optic cables, you can simply connect the fiber optic cable fiber optic port, by fitting the fiber optic ST connector and the jack of the iceberg. Then you can try to make sets of the key. Maintained at the receiver collar, and then switch clockwise prior to the key lock today, and you are ready to make use of this modem.
It is very easy. Now you can enjoy higher-speed Internet connection. Typical SC fiber optic adapter has plastic housing and single mode SC/UPC adapter is blue color, single mode SC/APC adapter is green color, multimode SC/UPC adapter is beige color.
Sopto is a worldwide leading manufacturer & supplier of fiber optic products. Sopto supply a range of Fiber optic data modem, such as RS-232/RS-485/RS-422 Fiber modem, multimode or single-mode fiber modem, transmission distance up to 2km (multimode) or up to 20km/40km/60km (single-mode).
Related:
http://sfpdirectattchcopper.unblog.fr/2013/04/11/china-dominant-ftth-asian-market-segments/
How to choose 10G Base-T patch cord
No matter Cat6 or Cat5e are both unable to support 10G Base-T of 100 meters. Therefore, relative to the prerequisites of the IEEE 802. 3 organization TR42. 7 Commission in 2003 began a survey of a new generation of cable, eventually enacted TIA/EIA-568-B. 2-10 of standard in 08. They redefined the prerequisites of the category 6A cable relative to the standards of the 10GBase-T
First of all, the requirement of class 6A system bandwidth up to 500Mhz, introduced a brand of crosstalk between the indicator and test. Category 6A system totally fulfills the applications of 10G Base-T of 100 meters. At present, based on horizontally sprained pair Gigabit transmission equipment is not very popular, but taking into account the quality assurance of integrated electrical wiring system 25 years and at least 15 years of usage time.
It will bring huge cost to switch the electrical wiring system and relocation. The cost of 10 G Base-T networks has been reduced from 8 to 9 times in 2004 to two to three times compare with 1000Base-T and it will be further reduce with the wide range of applications.
Compared with the cost of 10 GB/s fiber optic network, 10G base-T is only about 20%. As for the higher flow requirement data center, a good 6A cabling system is a foundation for future expansion and development.
Cat7 can also support 10G base-t, however considering its cost and versatility, the Cat6e is still the best solution for 10 Gigabit.
Related:
2013年4月8日星期一
The benefit in the fiber media converter
Your breakthrough involving Fiber media converter to generate turned match electro-mechanical alerts along with optical alerts alteration, guarantee your easy indication involving files packets involving a pair of cpa networks, the idea multilevel indication long distance restriction expanded for you to 100 kilometers through the water piping insert 100 feets (single multimode fiber). Throughout i . t . commercial infrastructure of Fiber media converter, normally shell out additional care about routers, knobs, and in many cases your network PCI-E card to the node files change multilevel tools, nevertheless generally unnoticed advertising alteration this sort of non-essential on the key in the multilevel tools. Especially when many of the data essential in a very substantial penetration of govt corporations along with corporations inside files site visitors, multilevel development should right hook up with your central source multilevel of fiber optic transmission medium, the internal LAN indication channel normally water piping insert, in order that supply advertising alteration tools inside easy shift involving distinct cpa networks become a must.
Fiber media converter employed in your Ethernet wire is not overwritten, so you ought to utilize fibers to supply your indication long distance in the true multilevel natural environment, support fibers last-km range to plug on the neighborhood plus the exterior stratum in the multilevel playa enormous position. With Fiber media converters, also have to up grade via copper to fiber optic, nevertheless deficiency of cash, manpower as well as occasion the person provides an economical software. So as to guarantee entirely works with your NICs, repeaters, hubs along with knobs and also other multilevel tools involving various other companies, Fiber media converter solutions ought to firmly abide by 10Base-T, 100Base-TX, 100Base-FX, IEEE802.3 and IEEE802.3u Ethernet standard. Moreover, EMC anti-electromagnetic light should certainly abide by FCC Part15. Currently, your significant home providers are generally wonderful attempts to develop your non commercial multilevel, campus along with organization cpa networks, consequently the number of Fiber media converter solutions are generally regularly increased to better match the gain access to multilevel development requires.
Related:
Will PCI always be exchanged by HyperTransport
HyperTransport, an ordinary recommended by simply Innovative Tiny Units, Inc. (AMD), can be suggested by simply AMD because pure further development via PCI. For each and every period involving nodes, it offers a superior a pair of point-to-point backlinks. Every single url might be any where from only two chunks for you to thirty two chunks vast, promoting a new greatest shift charge involving 6. several GB for every subsequent. HyperTransport was made for joining interior laptop or computer factors to each other, certainly not to plug outer units including completely removable devices. Your growth involving fill casino chips will certainly help PCI units gain access to your HyperTransport shuttle.
PCI-Express, put together by Intel (and earlier known as recognize while 3GIO as well as finally Age group I/O), seems to be to get your "next major thing" throughout shuttle technological innovation. To start with, more rapidly vehicles ended up designed pertaining to high-end hosts. These folks were named PCI-X along with PCI-X only two. 0, nonetheless they just weren't well suited for the property laptop or computer market place, given it ended up being expensive to develop motherboards using PCI-X.
Related:
Tips on how to understand the functionality in the optical multiplexer
Optical multiplexer can be optical transmission technique involving indication tools, generally pertaining to photoelectric alteration along with indication purpose. Normally used by telecommunications, electric power, keeping track of, business command, online video indication, and also other characteristics, throughout every single sector features numerous request.
Your optical multiplexer carries a number of lighting jaws, a number of lighting route.
Your optical multiplexer what number of E1 station
Your optical multiplexer get Ethernet program
Your optical multiplexer get V35 program
Your optical multiplexer get V11 / V24 program
Your optical multiplexer get mobile phone assistance
Does Your optical multiplexer multilevel operations
Your optical multiplexer multilevel method: could comprise a new self-healing engagement ring.
Related:
2013年4月2日星期二
Optical Transceivers patent battle involving IPtronics along with Avago Turn into Crazy
Avago Engineering (Avago Technologies) ended up being recharged with the optical semiconductor companies IPtronics A/S firm, in expenses involving scam along with go against involving commitment. Expressing Avago boasts obvious is quite unfounded for you to various other opponents of 40G and even 100G optical Transceiver modules.
IPtronics A/S boasts on the OUGHOUT. ERSUS. Section The courtroom throughout San Jose, Florida, Upper stated, Avago Engineering (Avago Technologies) can be as opposed to the opposite users involving its small package (SFF) standards corporation culpability, along with screwing up to shield your discreet data involving IPtronics. Avago obvious crew refuted your boasts along with explained it will submit a new safeguard.
ͼ
Your clash in the a pair of firms commenced throughout July 2010, if your Avago Engineering only gained your a lawsuit involving involving EMCORE with regards to parallel optical technological innovation patents. Avago lifted much the same scenario involving IPtronics for you to the us The courtroom. Avago explained Your IPtronics VCSEL new driver violated a pair of patents involving Avago, U . s . 6, 947, 456 (Open-loop lazer new driver obtaining an integrated digital camera controller, 456 patent) along with the us 5, 359, 447 (Optical transmission using vertical-cavity coming from a surface- emitting lazer functioning throughout a number of transverse modalities, branded 447).
Related:
订阅：
博文 (Atom)