Find Hidden Cables with Cable Wire Locators

Locating buried and hidden lines prior to construction or maintenance projects is critical to ensure the safety of your crew and reducing the potentially costly mistake. Cable locators and wire tracers are specially designed to aid in locating energized and de-energized wires, cable and pipes whether underground or hidden in a wall.

Cable locators are reply on the target having a charge or signal placed on them which is detected by a receiver within the locator, many locators are able to induce a signal onto the line using a transmitter in order to find it. Generally, the target must be metallic in order to conduct the signal, through a sonder or mini-transmitter can be used with plastic pipes. When induce a signal onto a pipe or cable, the transmitter is most commonly connected directly to the line or pipe to be located using signal clamps or clips. The signal will then transmit along the pipe or cable. In areas where there is no access to the line, the transmitter can also induce a signal from above, through the gourd to reach the utility.

Depending upon the application, there is a range of cable locators to be chosen. Some are designed for use for underground lines and pipes while other better suited for the tight confines of a walllikes wire trackers. Cable locators usually include a transmitter and a receiver. A widely used underground cable wire locator is NF-816, which is designed to locate the path of none-energized wirebehind walls or underearth. It can rapidly find the target wire from among plenty of telephone wires or network wires. By comparing the volume of the "tout" sound and the brightness of the signal indicator, you can find the target wire which has the highest volume and brightest indicator.

There are two primary methods of sweeping for lines and pipes with a cable locator: Passive locating involves sweeping an area looking for unknown lines while actively locating searching for a specific line by using either a direct connection or by inducing a signal. When using a cable locator to find underground lines and pipes, the underearth condition has a significant impact on the signal. Lays and camp solids help the signals travel down the line or pipe stronger with less interference than dry soils. So it is necessary to add water to the ground near the transmitter to improve signal strength.

Using Fiber Optic Attenuators to Increase Bit Error Rate

Fiber optic systems transmission ability is based on the optical power at the receiver, which is reflect as the bit error rate, BER is the inverse of signal-to-noise ratio, high BER means poor signals to noise ratio. Too much power or too litter power will cause high bit error rates.

When the power is too high as it often is in short single-mode systems with laser transmitters, you can reduce receiver power with an fibre attenuator. Attenuators can be made by introducing an end gap between two fiber, angular or lateral misalignment, poor fusion splicing, inserting a neutral density filter or even stressing the fiber. Both variable and fixed attenuators are available.

Variable attenuators are usually used for margin testing, it is used to increase loss until the system has high bit error rate. Fixed attenuators may be inserted in the system cables where distances in the fiber optic link are too short and excess power at the receiver causes transmission problems.

Generally, multimode systems do not need attenuators. Multimode source, even VCSELs, rarely have enough power output to saturate receivers. Single mode system, especially short links, often have too much power and need attenuators. For a single mode application like analog CATV systems, the return loss or reflectance is very important. Many types of attenuators suffer from high reflectance, so they can adversely affect transmitters just like highly reflective connectors.

Attenuators can be made by gap loss, or a physical separation of the ends of the fibers, including bending losses or inserting calibrated optical filters. Choose one type of attenuator with good reflectance specifications and always install the attenuator at the receiver end of the link. It is very convenient to test the receiver power before and after attenuation or while adjusting it with your fiber optic meters at the receiver, plus any reflectance will be attenuated on its path back to the source.

When testing the system power, turn on the transmitter, install the attenuator a the receiver, use a fiber optic power meter set to the system operating wavelength. Check to see whether the power is within the specified range for the receiver. For accurate measurements, the fiber attenuators connector types much match the lanch and receive cables to be tested, e.g. LC fibre optic attenuators is needed to work with the LC fiber patch cable, it work in 1250-1625nm range with optional attenuation value from 1dB to 30dB.

If the appropriate attenuators is not available, simply coil some patch cord around a pencil while measuring power with your fiber optic power meter, adding turns until the power is in the right range.

CWDM DWDM Transceiver Solutions Provided by FiberStore

CWDM DWDM transceiver modules are used as a part of CWDM or DWDM networks to provide high capacity bandwidth across an optical network. FiberStore CWDM transceivers can operate on 9/125 single-mode fiber to 40km or 80km by using special CWDM channels (1270nm to 1610nm, in steps of 20nm). While DWDM transceiver can support a link length of up to 40km or 80km on single-mode fiber by using special DWDM channels. CWDM DWDM transceivers are worked with a variety of network equipment such as switches, routers, and optical transport devices, to link the ports to the fiber optic network.

CWDM DWDM transceiver must comply with SONET/SDH, Gigabit, Fiber Channel and other communication standards. They are available with a variety of different transmitters and receiver types, allowing users to select the appropriate transceiver for each link to provide the required optical reach over the available optical fiber link.

Dense Wavelength Division Multiplexing (DWDM) solution includes DWDM Xenparks which allow to integrate WDM transport directly with Cisco 10 Gigabit Ethernet switches and routers. The DWDM Xenparks and DWDM optical filter and amplifier products enable the design of a flexible and highly available multi-service network. The DWDM XENPAKs can be used for un-amplified and amplified designs to transmit upto 320 Gigabit over the same pair of SMF. DWDM GBICs allow to integrate WDM transport directly with Cisco Gigabit Ethernet switches and routers. Similar to DWDM Xenpark, the DWDM GBICs interoperable with the same ONS equipment. They can be used for un-amplified and amplified designs to transmit upto 32 Gigabit over the same pair of SMF.

Coarse Wave Division Multiplexing (CWDM) solution allows scalable and easy-to-deploy Gigabit Ethernet (GbE) and Fibre Channel service. The combination of CWDM GBICs and SFPs and CWDM Optical Add/Drop multiplexer modules enables the design of a flexible and highly available multiservice network. CWDM GBIC/SFP solution has two main components: a set of eight different pluggable transceivers and a set of different CWDM Mux Demux or OADM. FiberStore CWDM solution offers a convenient and cost effective solution for the adoption of optical Gigabit Ethernet campus, data center, and metropolitan-area access networks. Our CWDM solutions consist of a set of eight different SFPs, a set of 8 single wavelength/dual channels OADMs, two 4 channels OADM/Mux and an 8 channel CWDM along with a CWDM rack mountable chassis.

CWDM SFP+ module allows enterprises and service providers to offer scalable and easy-to-deploy 10 Gigabit LAN, WAN, and optical transport network service in the network. CWDM 10Gig SFP+ transceivers are 18 center wavelengths available from 1270nm to 1610nm, with each step 20nm.

FiberStore is one of the main DWDM/CWDM system provider that capable to supply the high reliability WDM/CWDM/DWDM components & equipments including CWDM MUX DEMUX, DWDM MUX/DEMUX, CWDM/DWDM transceiver modules, which come with compact size, Low Insertion Loss, bi-directional and environmentally independent features.

Fiber Optical Faceplate Wiki

A fiber optic face plate is a coherent multi-fiber plate, which acts as a zero-depth window, transferring an image pixel by pixel (fiber to fiber) from one face of the plate to the other. Fiber optic faceplates can be applied in FTTH access network, telecommunication networks, CATV networks, data communication networks, which is used to bring fiber to the desk and can be widely used in multi-floor and high buildings. The fiber optic faceplate can be sometime called fiber wall jacks which are available with LC. SC, ST, FC fiber optic adapters, the port number is usually 2, 3 or 4 ports.

Generally, fiber optic wall plates can be divided into three types which is bevel fiber optic plate, hybrid fiber faceplate, FTTH fiber faceplate:

The bevel fiber wall plate is with 45 adapter plug- in/out angle, Hybrid fiber optic faceplate means the fiber adapter types are different from each other which can be SC-ST, SC-ST-LC, or
SC/ST/FC/LC, each adapter style is for one port.

Common Features of bevel fiber wall plate and hybrid fiber optic faceplate includes:
Size is 86*86mm
ABS plastic material
No additional insertion loss, simple operation, low construction intensity
The snap-in module is easy to install with straight tip style fiber optic connector
All fiber adapters are "universal" to support either multimode or single mode fiber connectors

Application:
FTTH access network
Telecommunication Networks
CATV Networks
Data communications networks

Except these two types, there is also another type which is the FTTH fiber optic faceplate, which is mainly designed for applications of FTTH, FTTB, FTTC, telecommunication networks and CATV4,Local area network. Check out some features of these FTTH fiber optic faceplate.
Indoor or outdoor rated
Available in 1x4, 1x8, 1x16 splitter as well as 2x4, 2x8, 2x16 splitter
Max. Up 16pcs of FTTH drop cable or pigtails
Suitable for wall-mounting or pole mounting application

Fiber wall plate is also used to create a fiber optic network at home. Besides the switches between different floor, fiber wall plate/jack and the pre-terminated fibers are needed. Look at the specs for the optical port on the switch. If the optical port is a pluggable device, you need to get its P/N and look up the spec. Most of the fiber sold on FiberStore that is conecterized, is patch chords. Fiber patch cord has very little strain relief in them. So take care when you pull them in your new installation that you do not damage them.

HP Compatible SFP Transceivers

Hewlett-Packard (HP) Company, established in 1939, is an American multinational information technology corporation based in United States. It is a leading company in providing hardware, software and service to consumers, small or medium sized business and large enterprises. HP product lines including a vast range of hardwares widely used in printing, digital imaging, software, computing as well as network service. After more than more than 70 years development, it has been one of the giant network device providers in the world.

Optical fiber communication is one of the main business of this company. Products including network routers, switches, as well as the brand transceivers. The original brand devices are widely used in Internet data centers. Due to its high quality and exclusive patent certification, prices of these products are extremely high and hardly to be applied in every network or connection. In order to solve this problem, more and more compatible products are developed to as a substitution. Compatible HP transceivers are usually fully tested to be compatible with HP devices such as HP switches or routers, that means the compatible transceiver can be work friendly with HP other devices, while the price of which is much more cheaper than the original ones.

Thanks to FiberStore, one of the main fiber transceiver modules providers based on the Internet to provider a super wide range of compatible transceivers to customers all over the world. Compatible major brands include Cisco, HP, Juniper, Dell, Netgear, Extreme, Force, 3Com, Alcatel-Lucent, Allied, Avaya as well as more than 40 other famous brand in the world. All the compatible transceiver are certified 100% compatible with the original band devices, and are reasonably priced. FiberStore is committed to offer their products to as many as customers with the lowest possible price.

FiberStore is proud to become a major provider of HP compatible transceivers after nearly ten years of continuously products improving and optimization. HP compatible transceivers by FiberStore includes compatible HP SFP, HP GBIC, HP X2 and HP SFP+.

HP GBIC includes HP A5225A compatible 1000Base-SX GBIC and HP A5226A 1000Base-LX GBIC transceiver. HP SFP is small-form-factor-pluggable transceivers, FiberStore currently has the compatible HP SFP transceiver series of HP J4858A/J4858B/J4858C, HP J4859A/J4859B/J4859C, HP J4860A/J4860B/J4860C and more. 10G HP compatible transceivers includes HP X2, HP XFP, HP SFP+. These 10G transceiver support 10GBase network standard 10GBase-SR, LR, ER, ZR, LRM, which can be mixed and developed with HP OEM 10G transceivers for seamless network performance and interoperability.

As a third party OEM manufactures, FiberStore can arrange the production of compatible transceivers (SFP transceivers, etc.) as low as 1 pieces and as high as 1,000 pieces. Customers can also order the transceivers according to their special requirement, and even design the product label and packaging for their own company. After the ordering, FiberStore also guarantee the compatible transceivers to work in your system and all of our transceivers come with a lifetime advance replacement warranty.

CWDM Solutions Offered by FiberStore

As broadband has unveiled a new world for subscriber, full of advanced capabilities and faster speeds. Your challenge is to meet their demands without compromising your budget. Because of its distance, speed and bandwidth potential, fiber optics has become the choice for many service providers. Fiber optic connections typically requires two strands of fiber - one for transmitting and one for receiving signals. But how to do if you need to add services or customers, but you've exhausted your fiber lines?

Thanks to CWDM, coarse wave division multiplexing (CWDM) is a method of combining multiple signals on laser beams at various wavelengths for transmission along fiber optic cables. The number of channels is fewer than in dense wavelength division multiplexing (DWDM) but more than in standard WDM.

CWDM has many advantages over DWDM technology in terms of system costs, set-up, maintenance, and scalability. CWDM is a technology which multiplexes multiple optical signals on a single fiber optic stand by using different wavelengths, or colors, of laser light to carry the different signals.

Typical CWDM solutions provide 8 wavelengths capacity enabling the transport of 8 client interface over the same fiber. However, the relatively large separation between the CWDM wavelengths allows expansion of the CWDM network with an additional 44 wavelengths with 100GHz spacing utilizing DWDM technology, thus expanding the existing infrastructure capacity and utilizing the same equipment as part of the integrated solution.

A single outgoing and incoming wavelength of the existing CWDM infrastructure is used for 8 DWDM channels multiplexing into the original wavelength. DWDM Mux Demux and optical amplifier if needed.

The typical CWDM spectrum supports data transport rates of up to 4.25Gbps, CWDM occupies the following ITU channels: 1470nm, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm, and 1610nm, each separated from the other by 20nm. PacketLight can insert into any of the of the 4 CWDM wavelengths (1530nm,1550nm,1570nm and 1590nm), a set of additional 8 wavelength of DWDM separated from each other by only 0.1nm. By doing so up to 4 times, the CWDM network capability can easily expand by up to 28 additional wavelengths.

With FiberStore's compact CWDM solutions, you can receive all of the above benefits and much more (such as integrated amplifiers, protection capabilities, and integration with 3rd party networking devices, etc.) in a cost effective 1 U unit, allowing you to expand as you grown, and utilize your financial as well as physical resources to the maximum. FiberStore provides all the component involved in the process, such CWDM MUX DWMUX, CWDM OADM, even CWDM SFP transceivers.

Corning Fiber Optic Cable: World Leader in Fiber Optics Technology

From the time they introduced fiber optic technology in the 1970, corning has been at the forefront of fiber optic technology, forming the designs, products and guidelines that have become standard in the industry today. Corning's broadened product range means they are now an industry leading fiber optic cable manufacturers in a number of customer focused solutions including:

Corning fiber optic cable
Corning connectors and related hardware
Corning distributed antenna systems (DAS)
Harsh environments products of Corning

As the inventors of optical fiber in 1970, innovation is at the core of Corning's successful history of technology and the foundation of providing compatible solutions that meet our customer's ever-changing needs. Such solutions include FiberStore solutions that provide the successful and efficient foundation of your data center, local area, intelligent traffic system and industrial networks.

After half a year after Corning fist debuted the "Thunderfolt Optical Cable" at CES 2013 in January alongside a USB standard solution dubbed "USB 3. Optical Cables", Corning announced that its Thunderbolt Optical Cables are the first completely optical fiber products to receive Intel's certification.

Corning's all-optical Thunderbolt cable use the company's ClearCuve VSDN optical fiber technology to deliver high data speeds over longer distances than traditional copper cables. The optical fiber version are also 50 percent smaller and 80 percent lighter than their copper counterparts.

Corning plans to make the cable available at various lengths starting at 10 meters, through final products specifications have yet to be revealed.

Corning has put over 3,000,000,000 US Dollars investment in China; it has 8 manufacturing factories in China with around 3000 workers. Corning Inc China headquarter is located in Shanghai. For fiber optic cable business, it has one optical fiber company and one fiber optic cable company in Shanghai, which is fully run and invested by Corning. Meanwhile it has two holding companies for fiber optic cable business in China, one is in Chengdu and other is in Beijing. Not only on fiber optic cable business, Corning also provides LCD products and ceramic products used on cars in China. FiberStore is proud to offer an extensive line of Corning products! Whether your application is indoors, outdoors, aerial, riser or plenum, you're sure to find the perfect fiber optic cable for your installation among Coring's Optical Fiber Communication product lines.

MPO/MTP Fiber Interconnection Products FAQs

The increasing demand on today's higher fiber counts has exploded the development of multi-fiber technology. FiberStore is one of the main manufacturing of MPO/MTP fiber patch cable and cassettes, and many other MPO/MTP fiber interconnection products, which engineers unique MTP solutions using 12, 24, 48 and even 72 fiber MTP ferrules.
What is an MTP Trunk Cable?
An MTP trunk cable provides 12 to 144 fibre connectivity, by using 12-fibre push/pull optical connectors, it minimized errors and reduced spaces. The MTP trunk cable allows for lower bend radii and smaller slack loops. It enables up to 6x the cable tray capacity over traditional bulkier cabling solutions, saving up to 65 percent space. MPO trunk cable features round furcation legs that provide easy routing and improved storage. With the small profile furcation plug, it allows stress free cable mounting, leaves no legs outside the housing and shipped with strain-relief mounting cradles.
What is MTP Extender/MTP Extension Trunk?
The MTP extension Trunk extend subsets of links from zone distribution into equipment zones, which feature pinned (male) MTP connector on one end and non-pinned (female) MTP connectors on the other. It pinned MTP side mates with trunks via MTP connector panels, while not pinned MTP side plugs into modules or harnesses.
What is MTP couplers?
MTP couplers are simple plastic rectangles that hold two MTP connectors together. One cable going into an MTP coupler needs to have a male connector. The other cable must have a female connector. MTP couplers can be either key-up to key-up, or key-up to key-down. MTP cable has a clip on the top of the connector. On a key-up to key-up coupler, the clips are pointed in the same direction on both of the cables. On a key-up to key-down coupler. On a key-up to key-down coupler, the clips are on opposite sides. This also affects the polarity of the signal. Key-up to key-up couplers invert polarity. Key-up to key-down couplers retain the original polarity. This was initially counter-intuitive to me. It made sense once I thought about it though.
What is MTP harness?
An MTP harness breaks out 12 fiber MTP terminations into LC duplex connectors. It connects to trunks through a pinned MTP connector plug into dual fiber electronics ports with LC uniboot duplex connectors. It is occupying less space than 6 duplex jumpers improve airflow for cooling efficiency. By easing handling of cable connections on high-fibre count SAN directors and switch blades, it enables higher density in equipment patch panels. MTP harnesses are available in two lengths: short harness legs for minimal cable slack and long harness legs for mounting flexibility within a cabinet.

CWDM DWDM Networking Solutions

Wavelength division multiplexing is a cost effective and efficient way for expanding the fiber optic transmission capacity, because it allows using current electronics and current fibers and simply shares fibers by transmitting different channels at different color (wavelength) of light.
Wavelength Division Multiplexing, WDM is a technique that multiplexing several signals over a single fiber optic cables by optical carriers of different wavelength, using light from a laser or a LED. According to the number of wavelengths it supports, there are Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM).
CWDM was introduced as a low-cost approach to increasing bandwidth utilization of the fiber infrastructure. By using several wavelengths/colors of the light, 18 channels are viable and defined in the ITU-T standard G.694.2. CWDM systems typically provide 8 wavelengths, separated by 20nm, from 1470nm to 1610nm.
Benefits of CWDM
Passive equipment that uses no electrical power
Extended Temperature Range (0-70C)
Much lower cost per channel than DWDM
Scalability to grow fiber capacity with little or no increased cost
Protocol Transparent
Simple to install and use
Drawbacks of CWDM
16 channels may not be enough
Passive equipment offers no management capacities
DWDM packing WDM channels denser than in CWDM systems, 100 GHz spacing (approx. 0.8nm), more channels and higher capacity can be achieved using DWDM. IUT-T recommendation G.694.1 defines the DWDM channels spectrum. DWDM comes in two different versions: an active solution and a passive solution. An active solution is going to require wavelength management and it a good fit for applications involving more than 32 lines over the same fiber. In most cases, passive DWDM is looked at as a more realistic alternative to active DWDM.
Benefits of DWDM
Up to 32 channels can be done passively
Up to 160 channels with an active solution
Active solutions typically involve optical amplifiers to achieve longer distances
Drawbacks of DWDM
DWDM is very expensive
Active solutions require a lot of set-up and maintenance expense
"Passive" DWDM solution still requires power
Optical Add/Drop Multiplexing (OADM)
By optical add/drop multiplexing techniques, wavelength channels may be added and dropped at intermediate nodes using passive optical components only. Optical Add/Drop Multiplexers are used in WDM Systems for multiplexing and routing fiber optic signals. They can multiplex several low-bandwidth streams of data into a single light beam, and simultaneously, it can drop or remove other low-bandwidth signals from the stream of data and direct them to other network routers. There are CWDM OADM and DWDM OADM.
FiberStore offer a wide range of WDM optical networking products that allow transport of any mix of service from 2Mbps up to 200Gbps. Our highly reliable WDM/CWDM/DWDM products include CWDM
multiplexers and demultiplexer, DWDM Multiplexers and demultiplexers, CWDM & DWDM Optical Add-drop Multiplexer, Filter WDM modules, CATV amplifier, OEO converters as well as many other most demanding CWDM DWDM networking infrastructure equipment.

Are Your Sure that You Have Chosen the Truly Low Smoke Non Halogen Cables

This article will guide to buy the truly low smoke halogen free cable, which is fully compliant with IEC standards and ultimately offers maximum safety and assurance in application. Awareness of the impact of smoke and harmful gases emitted during a fire has led to a growing demand for an alternative to more traditional plastic halogenated cable constructions.
Although low smoke and flume cables are commonplace, however, in the event of a fiber, these cables can still release toxic and corrosive gases. In the next text, we will tell you the difference between low smoke non halogen or low smoke and halogen:
It is true to state that a cable can have low smoke characteristics so that in the event of a fire, it will not release the dense smoke plumes seen with a traditional PVC cable. However, cable can be low smoke and fume and yet still release toxic and corrosive gases when ignited. Despite its low smoke generation, this classification of cable, commonly known as LSF (Low Smoke and Fume) still typically contains PVC based compounds, making it exempt from halogen free compliance.
The fact is cables which have PVC in their insulation or cable jacket are not compliant and cannot be deemed to low smoke non halogen. If they contain PVC, they are not halogen-free.
Stringent fire requirements, environmental concerns and new legislation have resulted in an increased demand for both low smoke and low smoke non halogen cables. This increase in demand has also led to a growth in the number of cable manufacturers and suppliers in the market.
A low smoke cable and a low smoke non halogen cable are often confused people as a multitude of cables available and the industrial abbreviations used to describe them. Whilst a low smoke cable is acceptable in some industries and applications, for maximum safety, fully compliant low smoke non halogen cable from a reputable cable manufacturer is recommended. A high performance low smoke non halogen cable can bring benefits in addition to compliance, particularity in the case of flame retardants which is vital to help prevent the spread of fire.
Conformity to the IEC standard 60332-1-2 is a fundamental requirement for flame retardants for communications cables whether halogenated or not; however, superior quality Low Smoke Non Halogen cables can achieve a higher rating to the IEC standard 60332-3-24. Superior flame retardancy to reduce the spread of fire, wider operating temperatures for confident use in varying temperature applications and improved tensile strength for durability can all be achieved from a premium quality cable designed for total reliability and safety.
Reputable fiber optic cable supplier will build these additional benefits into their cable design and manufacturing processes. Process capability does not necessarily bring process stability, consistent manufacturing quality is vital for assured performance and Flame Retardant Low Smoke Non Halogen compliance.

RJ45 Colors and Wiring Guide Diagram TIA/EIA 568 AB

The information listed here is to assist Network Administrators in the color coding of Ethernet cables. Please be aware that modifying Ethernet cables improperly may cause loss of network
connectivity. Use this information at your own risk, and ensure all connectors and cables are modified in accordance with TIA standards.
Basic Theory: By looking at a T-568A UTP Ethernet straight-thru cable and an Ethernet crossover cable with a T-568B end, we see that the TX (transmitter) pins are connected to the corresponding RX (receiver) pins, plus to plus and minus to minus. You can also see that both the blue and brown wire pairs on pins 4, 5, 7, and 8 are not used in either standard. What you may not realize is that, these same pins 4, 5, 7, and 8 are not used or required in 100BASE-TX as well. So why bother using these wires, well for one thing its simply easier to make a connection with all the wires grouped together. Otherwise you'll be spending time trying to fit those tiny little wires into each of the corresponding holes in the RJ-45 connector.
The T-568A standard is supposed to be used in new network installations. Most off-the-shelf Ethernet cables are still of the T-568B standard; however, it makes absolutely no functional difference in which you choose.
Both the T-568A and the T-568B standard Straight-Through cables are used most often as patch cords for your Ethernet connections. If you require a cable to connect two Ethernet devices directly together without a hub or when you connect two hubs together, you will need to use a Crossover cable instead.
A good way of remembering how to wire a Crossover Ethernet cable is to wire one end using the T-568A standard and the other end using the T-568B standard. Another way of remembering the color coding is to simply switch the Green set of wires in place with the Orange set of wires. Specifically, switch the solid Green (G) with the solid Orange, and switch the green/white with the orange/white.
How to Build an Ethernet Cable Instructions:
Pull the cable off the reel to the desired length and cut using wire cutters or scissors. If you are pulling cables through holes, it's easier to attach the RJ-45 plugs after the cable is pulled.The total length of wire segments between a PC and a switch or between two PC's cannot exceed 100 Meters (328 feet) for 100BASE-TX and 300 Meters for 10BASE-T.
Start on one end and strip the cable jacket off (about 1") using a wire stripper or a knife. Be extra careful not to nick the wires, otherwise you will need to start over.
Spread, untwist the pairs, and arrange the wires in the order of the desired cable end. Flatten the end between your thumb and forefinger. Trim the ends of the wires so they are even with one another, leaving only 1/2" in wire length. If it is longer than 1/2" it will be out-of-spec and susceptible to crosstalk. Flatten and insure there are no spaces between wires.
Hold the RJ-45 plug with the clip facing down or away from you. Push the wires firmly into the plug. Inspect each wire is flat even at the front of the plug. Check the order of the wires. Double check again.
Check that the jacket is fitted right against the stop of the plug. Carefully hold the wire and firmly crimp the RJ-45 with the crimp tool.
Check the color orientation, check that the crimped connection is not about to come apart, and check to see if the wires are flat against the front of the plug. If even one of these are incorrect, you will have to start over. Test the Ethernet cable.
Ethernet Cable Tips:
A straight-thru cable has identical ends.
A crossover cable has different ends.
A straight-thru is used as a patch cord in Ethernet connections.
A crossover is used to connect two Ethernet devices without a hub or for connecting two hubs.
A crossover has one end with the Orange set of wires switched with the Green set.
Odd numbered pins are always striped, even numbered pins are always solid colored.
Looking at the RJ-45 with the clip facing away from you, Brown is always on the right, and pin 1 is on the left.
No more than 1/2" of the Ethernet cable should be untwisted otherwise it will be susceptible to crosstalk.
Do not deform, do not bend, do not stretch, do not staple, do not run parallel with power cables, and do not run Ethernet cables near noise inducing components.
Source from copper & fiber optic cable manufacturers