Power over Ethernet (POE) is a technology by which powered devices receive power and signal along a single Ethernet cable. The International Electrical and Electronics Engineers 802 working group is responsible for setting forth the standards governing power over Ethernet applications. The industry has standardized the use of power over Ethernet in order to ensure that devices all work properly together. Earthing, or bonding a piece of voice and data cabling to ground, is considered essential to the proper installation of any type of electrical system but becomes even more important when Power over Ethernet enters the equation.
The POE Standards There are currently two main standards in use for power over Ethernet devices. The first standard, IEEE 802.3af-2003, provides devices with up to 15.4watts of DC power for operation. This translates into approximately 44 volts delivered at 350 milliAmps. The next POE standard, IEEE 802.3at-2009 allows for up to 25.5 watts of power, with some manufacturers claiming as much as 51 watts of usable power can be delivered by their devices. Category 5e data cabling is usually specified for POE applications, and when the installation requires the cable to be run outside, the cable must be rated for outdoor use. Earthing Earthing, or grounding, is defined as the intentional connecting, or bonding, of electrical equipment to earth ground. This is to protect equipment and personnel in case of transient or induced voltages in electrical equipment or wiring. The proper method of earthing an electrical system depends on the size of the system. However, with Power over Ethernet, earthing also protects the equipment from lightning strikes when surge protectors are used properly. POE equipment must be grounded to the same ground that is used by the power sourcing equipment and the building electrical system. The connection to ground needs to be as short and straight as possible, and must be made with a minimum ten gauge bare or insulated copper wire. A quick perusal of a number of POE-related technical support forums shows that improper grounding is one of the main causes of POE systems not working properly and from outdoor equipment receiving irreparable damage during storm activity. Power Over Ethernet Uses POE allows you to use powered devices in remote locations. Power over Ethernet allows you to mount parking lot surveillance cameras with pan, tilt, and zoom capabilities and not have to run a separate set of power lines. Wireless modems, access points, and routers can be located wherever needed, whether power is easily accessible or not. Many of the newer Voice over IP phones are powered using POE. Clocks that are synchronized to s central time system, more and more, are using this technology for power and receiving their time signal from the National Observatory Chronometer. Terminology As with any new technology, this one comes with voice and data cabling its own terminology. Power sourcing equipment supplies power to the Ethernet cable. The powered device receives power from the PSE through the Ethernet cable. These can be routers, cameras, modems, switches, wireless access points, or and of a number of other device types.
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Cabling is the material and system through which data and information is transferred from one device to another. There are many different applications for voice and data cabling materials, including transmitting telephone data, computer network data and much more. Voice data is one of many types of information to be transmitted in this way. When installing a system to transfer data of this type, you have a number of different options from which to choose.
Unshielded Twisted Pair Unshielded twisted pair cable is typically the least expensive type. Often known as UTP cable, this is made up of pairs of wires that are intertwined around one another inside of the larger cable framework. The reason for this twisting is to help the smaller wires avoid interference from both electrical and radio influences. UTP is susceptible to a moderate degree of interference, though this is often not a concern for voice data information transferring. Shielded Twisted Pair Slightly more expensive than UTP cable is shielded twisted pair cable, often referred to as STP. This cabling is similar to UTP in many ways, although the wires within the cable framework are shielded by a braided metal band. This helps to protect them from electrical frequency interference, making the connection more secure and reliable. Coaxial Coaxial cable is one of the most common types of material used for the purposes of transmitting voice data. This type of is constructed with a core of copper, which is an excellent material for transmitting information data. The copper core is surrounded by a thick plastic barrier and a metal shield, both of which help to provide coaxial cable with a better protection from interference due to electrical and radio sources than either UTP or STP. Coaxial cable can be somewhat more difficult to install than these other types, however. Fiber Optic Although it is oftentimes the most expensive type of cable to purchase for a project of this type, fiber optic is both the fastest and the most highly resistant to interference. Fiber optic materials make use of a flexible glass core. Rather than transmit standard data bits, these cables transfer light. This eliminates the risk of electrical interference and also allows the data to be transferred over much larger distances than for any of the other types listed above. Fiber optics are generally also much faster than these other types, too. To find the best type of cable for your voice and data cabling project, it's best to speak with a professional data cabling installation expert. They can help you to determine which material will be most conducive to a successful connection and a high speed transfer capability. Strong data cabling systems have become an important part in every organization and company. Along with advancement in the electronics and electrical devices manufactured to be used by the consumers, it is data cabling services important that you assess the cabling systems and its set up at your place or at office.
In most of the cases, the system which make of use manual connection could be stronger as well as safer than usual one based on the wireless technology. These days the use of fibre optics cabling system is also increasing. Although there are several advantages of the cabling systems, there are several disadvantages too over the wireless network. The first and important concern is the security. In any company or organization, the security comes first. Safety and security is the first advantage of the data cabling as it provides hire level of protection compare to the wireless set-up. However, there are several security facilities available in the wireless network such as passwords protected Wi-Fi network. The password will prevent the foreign personality to access to our network and hence the data will remain secured. But remember one thing that in contrast with cabling system it'd never been secure. The cabling systems provide constant connectivity which is the most important concern. Wireless signal may create interval whereas the data comes in a packet constantly without getting influenced with other frequency. In this way the data won't get corrupted and consistence connectivity can be obtained through data cabling. You will find very low Interference with physical setup and fiber optics cabling. The data cabling systems is not easy affected by the radio frequency and electrical influence once the set-up is done properly. Irrespective of this, the wireless network gets easily affected by the radio frequency. As the cabling doesn't fail in providing constant connectivity, the physical setup provides great speed. These days the companies are moving towards the fiber optics cabling as it provides excellent speed which is ideal for high speed data exchange system. Besides these advantages, there are few disadvantages of the data cabling services. It doesn't provide mobility as you have static address of the device. It required physical connection where as the wireless setup doesn't require to connect device physically. Wireless setup seems to be easy one compare to the data cabling system and less complex too. Which type of connectivity to choose is purely depends upon your requirements. Each type of set up has its own significance and hence you must select the one which gratify your need. Setting Up the Backbone
Whether the project involves establishing a voice and data structure for a single location or a series of interconnected locations, it is important to begin with the basics. The process will begin with the wiring at each of the locations involved in the network. If your company is building the facility from the ground up, then you will want to prewire the office. When doing so, make sure that the structured cabling wiring will support typical voice communications like basic telephony. You also want to ensure that the low-voltage wiring can support advanced data communications that is capable of supplying bandwidth for everything from a robust Internet connection of some type to high speed transfer into, out of and within your network. Most structured cabling systems use category 5 cable for the entire system. These systems are often installed by the interconnect who provides the telephony system or a contractors who specialize only in structured cabling systems. Providers who specialize in the development of structured cabling solutions can evaluate the scope of your office environment and come up with a wiring plan that will easily serve your needs today. Make sure to obtain suggestions from a couple of different sub-contractors before choosing one to manage the wiring process. This strategy provides the benefit of getting more than one perspective and possibly identifying a very helpful function that you had not considered in the past. Additionally, you will want to get at least three cabling quotes or RFP's from three different structured cabling sub-contractors. This goes for the telephony or VOIP system as well. You will want to get at least three quotes or bids from each interconnect that you interview. Addressing the Voice Component Options for voice communications are considerably more varied than in decades past. Once upon a time, the company would purchase a private branch exchange or PBX to manage inbound and outbound calls. The PBX would physically reside at the office location and allow for both manual intervention and automated options for routing calls to open extensions, voice mail boxes and other options. A single line would connect the PBX with a public switched telephone network and allow inbound calls to be routed to different trunks or trunk groups found in the internal voice system. Today, there is also the option of going with a virtual PBX. This solution offers all the same benefits but allows them to be managed in a virtual environment as long as you have an appropriately designed and installed structured cable wiring netwokr. Using a Voice over Internet Protocol (VoIP) connection, the functions are managed remotely. One benefit of this option is that if your office is damaged due to a natural disaster, you can make a few changes to the virtual PBX and have your employees work remotely. You can also go with a hybrid system that voice and data cabling involves a combination of the traditional and virtual PBX structure. This gives you the best of both worlds and also helps to create an element of redundancy with your voice communications. Should one component be inoperable for a period of time, the remaining component can easily take on the call traffic. That translates to no downtime for your daily office functions. With any type of PBX, you want to make sure the configuration includes several basics. The system must support enough trunks to allow extensions for each workstation in the office. You also want additional trunks that can be called upon for conducting audio conferences that include locations outside your network. Don't forget to allow for functions such as call waiting, call parking, voice mail, internal paging and other features that will make life around the office a lot easier. Considering the Data Component Designing the data system for the office calls for identifying the right type of hardware and software to drive the needs of your individual business. Keep in mind that while a doctor's office will function somewhat differently from an attorney's office, both will require a few basic elements as part of the design. Ideally, you want the data system to support all clerical, administrative and accounting processes with ease. The selection of hardware is extremely important for any data system. The data must be housed in a server that is protected with adequate security measures. The software used to drive that server should allow a master user to assign specific credentials to each user of the network. The idea is to make sure employees can add to, correct and access the data they need to do their jobs, but are still unable to reach proprietary voice and data cabling that is not associated with their standard and usual job tasks. The server should be able to house large amounts of data without experiencing any type of slow response during peak working hours. A wireless network solution is one of the best solutions for sharing various resources such as data storage, software, printers and internet connections. Using this technology, more people are operating from their houses instead of commuting their offices to work.
The process of setting up such a system is not only extremely simple but also inexpensive. Generation today, has well accepted such cabling network solutions is technology because it allows you more mobility than ever before. Using such technology, you can carry your laptop or computer anywhere without any hassle and tangling of cables or wires. This is certainly a perfect solution accomplishing different goals of life. Benefits of this technology: As compared to other networking solutions, it offers the following benefits of convenience, cost advantage and productivity: · High Speed of Installation: Installing it is not only easy and fast but it also obviates the requirement to pull cable wires through ceilings and walls. · Flexibility: The systems associated with this technology can be easily configured into a wide variety of network topology in order to meet the requirements of particular installation and applications. One can easily change and range configurations from peer-to-peer networks appropriate for few users. · Mobility: Using it, users have an easy access to information anywhere in the company or organization or outside. Thus, this mobility greatly supports enhanced productivity and new service opportunities that were previously not possible because of old technologies. · Minimum Ownership Cost: Although, the initial investment needed for this technology can be extremely higher, however the expense of overall installation and its life cycle cost can be comparatively lower. Long-term benefits are highest in the environments that require frequent changes and moves. Few examples of wireless solution includes the following: · The Amateur Radio Service · Cordless sets of telephone-they have limited range and do not confuse them with mobile phones · GPS (Global Positioning Systems) allows captain of ships and boats, drivers and pilots of aircraft to find the location on different parts of the earth. · Professional and consumer Marine VHF radios · Professional Specialized Mobile Radio (SMR) and Land Mobile Radio ( LMR) are mostly by ]ublic, industrial and business entities. · Satellite television-this has revolutionized the world. Sitting in your drawing room in any part of the world, you can view any channel of your choice. · Cellular Pagers and Telephones-They provide cabling network solutions great connectivity to mobile and portable applications, both business and personal. · Cordless Computer Peripherals- One of the most common examples is cordless mouse. Other examples include printers and keyboards because they can be connected to computer through wireless. |
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