Introduction to Fixed Asset Management

There are obvious benefits from implementing and maintaining a record and control over assets. Savings can be obtained from being able to both see current asset deployment and thenby maximizing their use. Monitoring assets will reduce unauthorized use or misappropriation and insure employees leaving a firm return assets under their control. In some cases a system is mandated by government regulations, terms of lending, public grant terms, insurance terms etc. One person can maintain and manage all fixed assets of a business if they have software to assist them. Computer systems and software available reduce complexity, save time and prevent mistakes. Why use an asset management software program?

While paper and pencil methods can be used, software programs assist in the recording, maintenance and auditing of assets. This saves time and gives a clear picture of assets since sorting and viewing in different ways is quick and easy.

The most basic 'solution' would be using a spreadsheet program such as excel. Even after migrating to software specifically designed for asset management there are times that a spreadsheet program may continue to be useful.

What is an Asset?

What you call an asset often depends upon your business activities. The first thing that comes to mind is fixed assets such as computers, production equipment, office furnishings etc. You might even wish to consider employees as assets or even service and maintenance contracts. A flexible asset management software program can provide a way to track many things most of us would not consider to be assets.

What are my first steps in setting up a system or 'solution'?

1: Decide what assets will be managed.

The more assets the more work in setting up your system. Limiting assets to only those over a certain dollar value is a good idea.

2: Deciding what characteristics of assets it is important to record within the software.

Your choices will not only have an effect upon the amount of work required but also the amount to which you can manipulate and view asset information by sorting on asset information field or combination of fields.

For example if you setup a field for 'location' then you can sort data to see what assets are in each location. If you also have a field for 'type' or 'class' then you could further sort and display to show only certain types of assets such as computers at one or more location.

As in every aspect of life one has to make tough choices between what is ideal and what is feasible. Your choices will have an effect upon data data when new assets arrive as well as collecting information about existing assets. Choices you make will also have a bearing upon your choice of software since some may not handle everything you want. One such a limitation is found within the AssetTrakker Pro software program. TrackitSoftware does not provide a method of tracking depreciation because it was felt this added too much complexity requiring the collecting and maintaining of a lot more data. Additionally, they felt, handling depreciation requires superior knowledge of government rules and regulations beyond the expertise of the very people that stand to benefit most from asset management. Accounting departments already calculate and account for depreciation. * Some software does promote depreciation calculation but only limited functionality that in most cases is not the way regulations demand.

Some help!

Below is a listing of Asset Attributes 'fields' for your consideration. You will not want to use all of them for your own 'solution' and may well have additional ones you need.

Asset #: The key identification reference used to track assets. They can be straight numbers or a number with an alphabet prefix. (0001 or A001). This number is used for audit purposes and for cross-reference.

Make: Manufacturer

Model: Use when arranging service or buying parts. Use as allowed grouping by model type.

Serial #: Specific asset identification. Needed when making warranty or insurance claims.

Cost to Repl .: Estimate the cost of replacing an asset. Useful for planning, risk assessment and insurance.

Cross Ref. #: Reference other asset number or tie together group of assets.

Type: Can be used for general grouping such as furniture, computer, shipping, etc.

Condition: Helpful to see what is likely to require replacement or decide on service needs.

Description: Other detail in addition to make, model, and serial number.

Memo: Additional information about the asset. If a computer you might want to list details of the hardware configuration or even the programs installed on it.

Department: This is helpful for sorting assets by department to assist in auditing.

Location: Good field to have so that a search / sort can give you a clear view of where assets are located.

Used by: Necessary if you have assets in the personal possession of an employee and / or assets off business concessions.

Date Assigned: Useful if assets are moved around or for telling how long an asset has been at its current location.

Expected EOL: The anticipated date when the asset will no longer be useful.

Funded by: Source of funds if provided by Bond Issue, or outside funds (loan) or a grant.

Cost: Total cost of acquiring an asset.

Date Acquired: Helps give some idea when replacement may be required.

Disposed: Indicates an asset has been disposed of.

Disposed Date: Date asset was disposed of.

Business Use%: Used if an asset is not used full time by the business to break down asset use. Not for everyone, but a field that imagination might find an indispensable use for.

OUT: Used for Tool / Equipment Tracking,

Taken By / In From: Used for Tool / Equipment Tracking to indicate who is taking or returning item.

Date Due: Used for Tool / Equipment Tracking to show when an asset is due back.

Recovered Value: Net proceeds of the disposal of an asset.

Disposed Detail: Notes on how and where an asset was treated of.

Warranty: Indicates if asset is covered by a warranty or could be used if covered by a service / maintenance contract.

Warranty Expiry: It is useful to see what expiries are approaching for tracking maintenance or service agreements. Helps prevent paying for service covered by warranty as well as prompting the repair of items before expiration.

Image: Can assist in asset identification or where 'look' is an important feature. Useful if insurance claim ever made.

Value: Could be amount the asset is insured for. Risk exposure control.

Leased: Helps keep track of Leased vs Owned assets.

Lease End: Used to warn when assets have to be replaced or the lease has to be renewed according to the terms of the lease.

Lease Start: Commencement date of lease on leased equipment.

Lease Co: The name of the company from which an asset is leased.

Audit Date: This column records the date the batch scans of assets were made for audit purposes.

Auditor: Record the name of the person who performed the audit.

What next?

By now you have a good idea of ​​what asset information you want to track. Before looking at the various software packages available you should consider how many people will be entering data and how many will be accessing the data. For a smaller organization it is likely that just one person will be involved but in larger firms despite a number will wish to participate. Your situation could require purchasing more than one software license and the software must support multiple users.

Use a Barcode Scanner?

A barcode scanner can be used to speed data entry and auditing. This will add to the cost and most lower priced software packages offer limited support for barcode scanners. If properly incorporated into software a scanner can provide excellent value and save a lot of time, particularly for annual audit purposes.

Below are outlined the types of barcode scanners used with asset management software.

A 'dumb' tethered ccd scanner is cheapest and purchased for around $ 70. This can only be used when plugged into the computer and acts just to a keyboard in that you scan a barcode and it is put into whatever cell or space you are in.

A 'laser' tethered scanner is more money but will be able to scan smaller barcodes and sometimes have a defect field of view (easier to scan a barcode quickly).

A ccd or laser scanner which has built in memory so scans can be made and then the scanner can be brought back and plugged into a computer, and those scans uploaded. This is extremely useful for audit purposes. For maximum utility your software should be optimized to take advantage of this 'batch' memory capability. A capable unit can be obtained for around $ 150.

A laser scanner with internal memory, as well as an input screen and keys, means that after scanning a barcode you can add additional information. These are more expensive and again their use has to be integrated into your management software. While prices are coming down you are looking at units in the pocket pc price range plus scanner cost. It is usual for software utilizing these units to also, for some reason, be priced higher.

Asset Management Software

The range of prices for asset management software is $ 200 to $ 10,000 and all require you to do the entry of existing asset data as well as some setting up for your requirements. Some offer telephone advice at additional cost but hands on assistance only comes with expensive packages (this level of software requires expensive sales force and marketing expense so possibly their price, for the features provided, may seem high).

Purchasing Criteria a lot of people seem to use. You may have more.

1: Price 2: Ease of implementation of system 3: Ease of use 4: Ability to fit the business 5: Functionality 6: Potential to handle growth

What you can obtain for a reasonable price

A program with full relational database, such as MS SQL Server Express, or open source database. Today there is no reason to set for less power or quality. Microsoft provides their SQL 2005 'Express' DB version at no cost.

A program that allows you to attach images of assets. While not necessary for everyone it is something that someday you might want to use.

A program that integrates the use of inexpensive 'batch' memory barcode scanners because, if not now, at some point in the future such an accessory will save time and money. Used in auditing it assures an asset was actually seen as barcode had to be scanned.

A program that will permit the management of 10,000+ assets. With decent memory in your computer and a fast full relational database engine there is not much of a limitation anymore and while certain functions may slow down a bit even a low cost program should handle over 10,000 assets.

A program that is flexible so you can take advantage of features later instead of having to implement everything at once.

* If more than one person is to be given access to the database then you should ensure that different levels of access can be set for different users to prevent unauthorized changes to data.

What you can get but not cheaply.

A program that integrates directly into your current accounting system.

A program that has full professional depreciation calculations.

A program that runs directly off your company server (lower cost software runs off workstations and while a central database can be located on your server and accessed by individual workstations this is not the same as complete software being server based with applets on workstations.

Hand holding and in house training to get your system up and running. There are firms that will sit down with you and ask you all the right questions, set up your software, audit and list all your assets and then train your staff how to operate and maintain your 'solution'. Most, to my knowledge, will recommend a mid to high priced software because it is easier to sell (commission higher as well) and easier for them to install due to their familiarity with it.

Nuts and Bolts

Gathering your Asset Information How you perform this step depends upon your situation. In our discussion below we assume you do not have existing asset information, in an existing excel spreadsheet or other format. If you do then you would save work by exporting / importing that data into your asset management software.

Starting your Asset Listing and Numbering from Scratch

This is an advantage because you are not limited by inherited constraints. Of course it is more work, as you can not just load in existing asset information but have to collect everything yourself.

Collecting asset information is time consuming. Getting this information accurately, with as little work as possible is important. Thinking about how to do the job and planning will help make this big job easier.

The following is how I suggest doing this but you may have your own, sometimes better plan.

Create data entry sheets that you will have people write in information about assets under their control. Your asset management software may create these or you could make up an excel spreadsheet to obtain them.

Try and obtain some 'buy in' from the department or location manager with control over assets. The closer to the asset you can allocate some responsibility the better that asset will be controlled. 'It's my department's asset' is more powerful an incentive than 'it's IT Dept's asset'.

Final steps

After entering data, that your co-operative managers helped you obtain, it is time to work with that data within your asset management software. It should not take long to become familiar with how it can present information to you on screen and in reports.

Now sit back and enjoy how easy it is to manage your assets.

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Advantages and Disadvantages of Professional Shopping Cart Software

Advantages & Disadvantages of professional shopping cart software As e-Commerce is becoming a regular technique in the business industry it appears that more and more software development firms are developing professional shopping cart software to be released in the market. There is currently a huge range of free shopping cart software that has been released, and it seems that most e-Commerce website owners prefer these free systems over paid for professional shopping cart software. In this article we are going to look at the advantages and disadvantages of professional shopping cart software.

Advantages

• Even though you will have to pay for the solution, you get a cart package that has been fully developed, tested and used in the real working world by other e-Commerce websites. If the solution is used by a popular website service then the chances are it has been under more than enough testing to be deemed ready for use.

• Professional shopping cart software will be supported by the people who developed it. A lot of free solutions out there are simply developed and then discontinued as the freelance developers move onto their next project. Support is essential if you are going to want upgrades as mentioned in our next point.

• As the system is supported, the development team are likely to fix any bugs that may occur and provide patches and security fixes. This means the shopping cart software will only get better as time goes on and furthermore improve your e-Commerce website.

• Your site is likely to be more secure when using a professional software solution as in most cases the it developed house private content management systems. This improves security as public content management systems such as WordPress are constantly under threat from hackers as they try to compromise the free source code.

• Another huge advantage of using professionally developed software in e-Commerce is that they will already support a huge range of different payment options for your customers. There are various carts – that only offer PayPal for payment by standard, and it can take a very long time to find plug-ins or figure out how to add other methods yourself. With professional software you can save time and possibly money as it is all included.

Disadvantages

• Your e-Commerce venture might be a small time project and professional cart does cost money which you may not have. In this case you may have to make do with a free shopping cart solution. The good part of conducting business online is that after you have made profit with the free system you can reinvest your money to buy a professional package.

• You trust the developers to do everything they promise to ensure the best experience. It might be slightly difficult to use at first and you might have to spend some time getting used to the bespoke system. You also have to understand that you are vulnerable until patches are made if a security flaw is found.

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The Leading Gaming PC Cases Are Essential To Help Protect and Power Your Extreme Gaming Hardware

Gaming PC Cases come in a variety of shapes and sizes. From rack mount to ATX tower casing, you can find one that best suits your gaming needs. Many games are played by as many 15-24 users and such games require the power of hardware to control both the graphics and many millions of instructions to the CPU with great speed. Custom Gaming PCs are the current rave with game lovers who strive for a better playing experience, adding more hardware.

With a large variety of casing, it is confusing to choose the right one. A good PC Case for gaming is one that has ample space to add more fans and USB ports. Heating is the main problem that slows down the PC and in some instances can damage it. Looks also matter a lot, an attractive and next-gen look, makes for a better playing experience.

All gaming PC cases come with microphones and headphone sockets, while the more advanced ones have fan controllers. New game players can do with two fans while some want to get additional fans to keep the PC from heating up. More advanced users utilize much of CPU power, and need more cooling.

When you are ready to buy a case, first look at the price options, compare various makes and models and see where you can save money and get the same functionality. The most accommodating case is considered the best. It will allow for more fans, and offers ample space for advanced graphic cards. Check to see, if the case can allow more than 4 fans and has at least two USB ports.

Some cases come with 4 USB ports and have space for up to six fans. If you are an advanced level player, you may want to consider one that has a fan speed controller, so you can monitor the cooling easily. Further up the ladder, there are cases that come with space for as many as 12 hard drives. Such a case, can take any kind of mother board you want to use.

The ATX are more popular these days and are like the industry standard. ATX form-factor allows for better air passage so all components can stay cool. It uses less cable, generates less heat and is more affordable. The expansion slots are easily accessible making it easy for users to add more graphic cards.

Looks wise, a clear panel looks attractive and spices up the computer using LEDs. There are also cases with bright graphics, and a modish look to add to the adventure. It all depends on your game choice, if you like a good thrill considering Gaming PC Cases that will add excitement to game time.

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Computer Hardware Course – The Advantages of Taking It

Computer hardware courses are an excellent way to learn how to manage the inevitable computer failures that you will encounter as you find yourself hanging on your computer more and more everyday. While you do have the option of taking your computer to the service center it can cost you a lot of time and money. Your computer hardware course is invaluable for helping you understand the hardware requirements for your computer that will be enable you to jump to the rescue instead of trudging along to the repair shop.

It does not take an engineer or a technician to be successful in learning about computer hardware. If you are interested in engineering or technician positions however, a background in computer hardware can make you a far more valuable person in your field and can enhance your employability tremendously.

To troubleshoot your computer you can do very well with a simple computer hardware course. You can become your own specialist and forgo spending the money on an IT specialist.

The time invested in a computer hardware study program will pay off quickly when things go wrong. But, this is not the only reason taking a computer hardware course would be a good plan.

Not only will you be able to fix your computer, but you will have the knowledge to build a computer from scratch. The cost of computer parts is often far less expensive than buying a pre-made package. You will also be able to customize your computer so that it is perfectly designed for your needs.

By avoiding the cost of labor from the computer store you will have a far less expensive computer that is perfect for you. You will also no longer need to worry about taking your computer in for repairs as you will know just how to fix what goes wrong.

Computer knowledge is in high demand no matter what career you are involved in. With the information you learn in a computer hardware course you will be able to take on an IT position. Such positions are in high demand as a limited number of people have the knowledge to take on an IT role.

The time needed to take a computer hardware course is well worth the investment. Learning about software and programming can only make you even better with your computer goals. If you are limited in time, not to worry. Many courses are available online or on CD for you to do at home.

Take some time to discover exactly what will be covered in your course. The computer technology field is huge, so you will need to focus. You will never be able to learn everything about computer hardware in a single course. It takes a lifetime of study to learn, and with technology constantly changing you will need to continuously work on keeping your knowledge up to date. A computer hardware course will bring you a chance to get ahead of the game and keep up with your own computer.

Louis Zhang, computerhardwarecute dot com

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Recommended Software for Arena Management

When there is a little over a month left to enter the data for a thousand plus cattle penning teams into a fickle spread sheet software program that was built by good intentioned volunteers; the last thing anyone should be doing is looking for replacement software. However, as any event/entry secretary or producer knows this is sometimes the lifeline that is needed to get the job done.

The preparation of all of the necessary data combined with balancing a three-quarter of a million dollar show in the six weeks prior to its start should have been enough to do. Throwing in a new piece of software to learn and master would be considered ludicrous to say the least. The producers deemed it to be a necessity in view of the history of inconsistencies in the program currently in use.

With a three-year old recommendation in hand and very little back ground checking, Arena Management Software became the chosen lifeline. The software was purchased, loaded onto the computers, played with for a day or so and then our team went to work. The KCI support group was there, day and night, to help with the learning curve and any snags that presented themselves. Our team quickly realized that the new user-friendly software program we had taken a chance on was going to be our ongoing choice for future events. The show was a success. The producers and contestants were happy. All was good in our world!

There have been a lot of years pass by since those short six weeks when our group became acquainted with the Arena Management Software. The program still provides a user-friendly format that has the talent to produce minimal data to realms of reports. From rodeo to cattle penning events the product continues to amaze our team with its ability to perform in and out of the arena.

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What is the Purpose of ERP Software?

Enterprise Resource Planning (ERP) software can be described as a complete business software solution. It is aimed at the integration of all business processes and sub-processes into a single unified system. This system is formulated and implemented in an organization to effectively and efficiently achieve the business goals of the organization.

ERP packages are implemented to manage the existing and prospective business plans and policies in an efficient manner under strict deadlines. It can be referred to as the ultimate business solution package that is predominantly concerned with making sure that the available resources of the organization are utilized in the best possible manner and coordinated with the business objectives of the organization.

It is crucial that modern day business organizations have a single unified system, which aims at harmonizing its business efforts. This can prove to be a crucial determinant in deciding the scope, area and net results of the organization as a whole, rather than running many different systems that don’t work well together. What makes ERP different from any other business solution package is the presence of a single and unified database system.

ERP software is as essential to the needs of a business today as food is for living. Businesses cannot run competitively in the absence of properly drafted and formulated ERP software. The more effective implementation and follow-up, the better are the results. ERP software is needed by all modern-day organizations, irrespective of the size, area of operations and business objectives.

Nowadays there are many ERP packages available in the global market, including SAP, PeopleSoft, Oracle, J D Edwards, and BAAN.

The selection of an ERP software package is dependent on many factors: previous software implementation, nature and size of operations, recommendations of consultants, and management decisions.

Before installing specialized software, a detailed study must be made and reviewed to match the business requirements with the available packages. This must be taken as a serious study as any mistake in selection or its effective implementation can prove disastrous to the organizational objectives and prospects. The ERP software must be installed by an ERP vendor or third-party consulting organization, which are expert service providers when it comes to providing Consulting, customization and support.

Some of the benefits of ERP Software:

* All processes and sub-processes are linked and unified into a single system.

* There are enhancements in the field of productivity, efficiency and achievement of business objectives.

* ERP tends to considerably reduce the response time by effectively transferring crucial information.

* ERP helps in streamlining the numerous functions performed by the organization as a whole.

* It helps the management to make vital decisions with unparalleled accuracy and in-depth study.

Thus, ERP software can effectively change the outlook of any business organization that exists in today’s cutthroat business world. Proper implementation of the ERP software is the key factor, which can benefit the growth prospects of any organization.

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Examining Computer Hardware Components

1. Checking the Screen or Monitor
The screen of your computer or monitor has pixels. These pixels have three colors: Red, green and blue. Pixels can often be damaged or stop functioning properly displaying only one color or just being black.

There is an online tool to check for bad pixels called "CheckPixels" The test at CheckPixels will display your three main colors mentioned above and if a pixel is dead, it will show as a black spot and if a pixel is glowing a different color ( Malfunctioning) you will see that too.

2. Checking the Keyboard
The keyboard might not seem important as a hardware component, but it is used in almost all tasks and taken for granted. For laptop users, the keyboard is very important. If one has to send the laptop away for repair the entire computer must go with it. There is also an online test tool available to test all your keyboard keys called "KeyboardTester".

3. Checking the Disk Drive (HDD & SSD)
Your HDD / SSD has your operating system and most of your applications and files. Having your HDD / SDD completely healthy is very important. This is most imperative when dealing with a used computer since you have no awareness of the previous history or care of the used computer and its HDD / SDD.

Different tools are available to check the condition and health of the HDD / SDD.

HDSentinel is one you can use for your HDD. The left hand side of the screen will display drives connected the computer. Health is the main parameter to look for. HD Sentinel will explain the meaning of the health percentages and the steps that you should take based on the results. As an example, you should not throw out your HDD just because of a few bad disk sectors and IO errors.

SSDlife is another tool specifically for an SSD. It also shows health in percentages and the expected life of the drive. Similar to hard disks, bad sectors can occur in SSDs.

4. Checking the Processing Units (CPU & GPU)

The main components that do all the processing are the Central Processing Unit (CPU) and the Graphics Processing Unit (GPU). These are the components that allow you to run your office applications and your games. These are also essential components to ensure are in perfect working order. So it is necessary that these two components should be in perfect condition. For testing both, we use CPU speed test

For testing your GPU, the tool.Base Mark Web 3.0 works just fine.

5. Checking the Random Access Memory (RAM)

RAM is the one essential component that has the most immediate impact on your computers performance. MemTest from HCI Design is a great tool to check your unused memory for errors. Identifying and fixing errors with your RAM is important. Errors in RAM cause the infamous "blue screen of death". Boot problems can also be attributed to RAM errors.

Conclusion
Besides the hardware component tests above, you should also check your Ethernet ports and connection, wireless connection from the wireless card (internal or external), HDMI, DVI and USB connections using available cabling and devices.

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Jingle Maker – Making Jingles With Desktop Music Maker Software

Looking to get into the jingle maker industry? It’s not exactly an easy field to break into but it is worth the trouble if you are ready to put forth the necessary time and effort to make it. If you are not already a professional musician then you will need a way to produce your jingles. We recommend desktop music maker software for this purpose. The rest of this article will cover the top three things you should look for when it comes to a desktop music making application for making jingles.

Feature #1 – Professional Music Production

If you are approaching the jingle making from the perspective of making money then you need to make sure your entire production is created in the manner that lends itself for commercial adaptation. This is essential if you expect your jingles to be used as radio jingles, commercial jingles or advertising jingles. For starters that means making sure you are able to create music output that is a minimum of 44,1 khz.wav files. You will also want to be able to create real bars of music versus samples or loops. This is a benefit of using music making software because it will make sure your music is created to be communicated to other musicians for playback.

Feature #2 – Variety Of Features

When you are just get started you will want something that allows you to take the melodies in your head and get them into music as quick as possible. Yet at the same time you don’t want to have to learn another application as your own skill set grows. This is why it makes sense to choose software that is usable as a beginner and expert alike. It should come with a number of presets that you can expand upon and purchase as your own abilities grow.

Feature #3 – Complete With Sound Generator

You never know where your jingle making skills will take you so you should also have access to making sound effects. It’s not necessarily a must have feature but if you have the choice then make it for software that does include this. You just never know when you may need this as a jingle maker.

We have briefly looked at some of the features you may want to look for when searching for music maker software for your jingle production exercise. The needed feature set should include professional music production capabilities, a variety of features and a sound generator. Of course these are just a small sample of features that you will find when looking for music maker software. But having the right tools just means you will be that much closer to creating the next set of catchy jingles.

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Advantages and Disadvantages of Biometric Time and Attendance Software

First of all let me ask you what you understand by time and attendance software? Have you ever been asked to log in as soon as you enter office and the main gate of the office has a Biometric machine that takes in your finger prints and allows you to enter the office premise? Yes, these are the time and attendance software being installed in a company.

Biometrics consists of methods for uniquely identifying a person (human being) by his/her physical or behavioral traits. There are many biometric software available in market for such purpose and their use is widely known. One such use is Biometric time and attendance management software.

Those days are gone when we had to punch in cards or sign into a register to tell the other person that we are present. Just as paper checking has been changed from manual to computerized, identifying a person and letting him in your office has been changed from manual to biometrics.

There are many benefits of having such methodology in your office. Such as:

• Accurate timing: When a person looks at his watch and enters the time there is a slight chance that he may see the wrong timing and write. Whereas with biometric time and attendance software there is no possibility of such mistake. The user does not need to see or check the time, it automatically gets logged in.

• Less error: There is no scope of human error here.

• Profit to company: If it’s accurate and correct the company will definitely gain from it.

As everything has a good and bad side this too has its disadvantages, such as:

• Extra cost to company: Biometric software and machine cost a lot more, so installing such software need a good investment money wise.

• Extra management: Remember when every employee is logging his own timing when he comes or leaves; there is no extra management here. But, if you are putting a machine there has to be taken some care of it.

Biometrics time and management software is really helpful when creating payrolls for employees. Once a definite timing has been registered you don’t need to think twice before creating the employees pay.

Many homes are also using such kind of software to have a safe and secure home. Biometric software is really helpful when you need security in your home as well as in office. There are many companies all over the world providing such biometric time and attendance software. You just need to keep an eye on the technologies and websites that are providing you these.

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Wide Area Network (WAN)

Types and Characteristics of WANs

What is a WAN?

There are two prevailing definitions of a Wide Area Network (WAN). The book definition of a WAN is a network that spans large geographical locations, typically to interconnect multiple Local Area Networks (LANs). The practical definition of a WAN is a network that traverses a public network or commercial carrier, using one of several WAN technologies

What are its Main Components?

The main components for a WAN are routers, switches and modems. These components are described below in the hardware section.

CPE – Devices on the subscriber contracts are called customer premises equipment (CPE).
The subscriber owns the CPE or leases the CPE from the service provider. A copper or fiber cable connects the CPE to the service provider's nearest exchange or central office. This cabling is often called the local loop, or "last-mile".

DTE / DCE – Devices that put data on the local loop are called data circuit-terminating equipment, or data communications equipment (DCE). The customer devices that pass the data to the DCE are called data terminal equipment (DTE). The DCE primarily provides an interface for the DTE into the communication link on the WAN cloud.

Hardware

In a WAN you will need various types of hardware components for it to function. The typical items of hardware that you will need in a WAN are:

Router – An electronic device that connects a local area network (LAN) to a wide area network (WAN) and handles the task of routing messages between the two networks. Operates at layer 3, and makes decisions using IP addresses.

Switch – A switch is a network device that selects a path or circuit for sending a unit of data to its next destination. Operates at layer 2, and uses MAC addresses to send data to correct destination.

Modem – Short for modulator / demodulator, a modem that enables a computer to communicate with other computers over telephone lines. Operates at layer 1, where signals are converted from digital to analogue and vice versa for transmission and receiving.

Wan Standards

WANs operate within the OSI model using layer 1 and layer 2 levels. The data link layer and the physical layer. The physical layer protocols describe how to provide electrical, mechanical and functional connections to the services provided by the ISP. The data link layer defines how data is encapsulated for transmission to remote sites.

Encapsulation

Encapsulation is the wrapping of data in a particular protocol header. Remember that WANs operate at the physical layer and the data link layer of the osi model and that higher layer protocols such as IP are encapsulated when sent across the WAN link. Serial interfaces support a wide range of WAN encapsulation types, which must be manually specified. These types include SDLC, PPP, Frame delay etc. Regardless of WAN encapsulation used it must be identical on both sides of the point to point link.

Packet and Circuit Switching

Circuit switching and packet switching are both used in high-capacity networks.
The majority of switched networks today get data across the network
Through packet switching.

Circuit-switching is more reliable than packet-switching. Circuit switching is old and expensive, packet switching is more modern.

General Routing Issues

What is a Routing Protocol?

A routing protocol is a protocol that specifies how routers communicate and exchange information on a network. Each router has prior knowledge of its immediate neighbors and knows the structure of the network topology. The routers know this because the routing protocol shares this information.

Protocol

RIP (Routing Information Protocol) was one of the most commonly used protocols on internal networks. Routers use RIP to dynamically adapt changes to the network connections and communicate information about which networks routers can reach and the distance between them. RIP is sometimes said to stand for Rest in Pieces in reference to the reputation that RIP has for breaking unexpectedly and rendering a network unable to function.

Routing Algorithms

Distance Vector

This type of routing protocol requires that each router simply inform its neighbors of its routing table. The distance vector protocol is also known as the bellman-ford algorithm.

Link State

This type of routing protocol requires that each router maintain a partial map of the network. The link state algorithm is also know as Dijkstra's algorithm.

IGRP

IGRP is a type of distance vector routing protocol invented by cisco used to exchange routing data in a autonomous system. Distance vector protocols measure distances and compare routes. Routers that use distance vector must send all or a portion of their routing table in a routing update message at regular intervals to each neighbor router.

Addressing and Routing

What does routing mean?

Routing is the process of deciding how to move packets from one network to another.
The directions also known as routes can be learned by a router using a routing protocol then the information is passed from router to router along the route of the destination.

IP Address's

Every machine connected to the internet is assigned an IP address. An example of an IP address would be 192.168.0.1. IP addresses are displayed in decimal format to make it easier for humans to understand but computers communicate in binary form. The four numbers that separate an IP address are called Octets. Each position consists of eight bits. When added to together you get 32 ​​bit address. The purpose of each octet in an IP address is to create classes of IP addresses that can be assigned within a network. There are three main classes that we deal with Class A, B and C. The octets of an IP address are split into two parts Network and Host. In a class A address the first octet is the network portion, this determinates which network the computer belongs to, the last octets of the address are the hosts that belong to the network.

Sub netting

Sub netting allows you to create multiple networks within a class A, B or C address. The subnet address is the address used by your LAN. In a Class C network address you would have a subnet mask of 255.255.255.0. A subnet mask identifies which portion is network and which is host. For example 192.168.6.15 the first octet three octets are the Network address and the last octet being the host (Workstation). It is important to subnet a network because gateways need to forward packets to other LANS. By giving each NIC on the gateway an IP address and a Subnet mask it allows the gateways to route packets from LAN to LAN. Once the packet arrives at its destination, the gateway then uses the bits of the subnet portion of the IP address to decide which LAN to send the packets.

Circuit Switched Leased Lines

A circuit switched network is one that establishes a dedicated circuit (or channel) between nodes and terminals before the users may communicate. Here are some terminologies associated with a Circuit switched network.

Frame relay is a telecommunication service designed for cost-efficient data transmission between local area networks (LANs)

Basic rate interference is a service used by small business for internet connectivity. An ISDN BRI provides two 64 Kbps digital channels to the user.
Primary rate interface (PRI) is a telecommunications standard for carrying voice and data transmissions between two locations
All data and voice channels are ISDN and operate at 64kbit / s

Packet Switching

Http://www.raduniversity.com/networks/2004/PacketSwitching/main.htm – _Toc80455261

Packet switching refers to protocols in which messages are broken up into small packets before they are sent. Each packet is then transmitted over the Internet. At the destination the packages are reassembled into the original message. Packet switching main difference from Circuit Switching is that that the communication lines are not dedicated to passing messages from the source to the destination. In Packet Switching, different messages can use the same network resources within the same time period.

Http://en.wikipedia.org/wiki/Asynchronous_Transfer_Mode

Asynchronous Transfer Mode (ATM) is a cell relay, packet switching network and protocolwhich encodes data into small fixed-sized cells.

ISDN is used to carry voice, data, video and images across a telephone network. ISDN stands for integrated services Digital Network. Isdn also provides users with a 128kbps bandwidth. This is done through frame relay. Frame relay complements and provides a service between ISDN, which offers bandwidth at 128 Kbps and Asynchronous Transfer Mode which operates in somewhat similar fashion to frame relay but at speeds from 155.520 Mbps or 622.080 Mbps. Frame relay is based on the older X.25 packet switching technology and is used to transmit analogue signals such as telephone conversations.

PSDN stands for packet switched data network and is a data communication network. Packet switched networks do not establish a physical communication signal like the public telephone circuit (circuit switched network) Packets are sent on a fixed length basis and assigned with a source and a destination address. The packages then explicitly on the routers to read the address and route the packets through the network.

Mobile and Broadband Services

Digital Subscriber Line (DSL) is mainly used to bring high bandwidth connections to homes and small business's over a copper wire telephone line. This is can only be achieved if you stay within the range of the telephone exchange. DSL offers download rates of up to 6mbps allowing continuous transmission of video, audio and 3D effects. DSL is set to replace ISDN and compete with the cable modem in providing multimedia to homes. DSL works by connecting your telephone line to the telephone office over copper wires that are twisted together.

Asymmetric Digital Subscribers Line is most commonly used for home users. It provides a high download speed but a lower upload speed. Using ADSL, up to 6.1 megabits per second of data can be sent downstream and up to 640 Kbps upstream.

Http://en.wikipedia.org/wiki/Symmetric_Digital_Subscriber_Line

Symmetric Digital Subscriber Line is a digital subcriber line which runs over one pair of copper wires. The main difference between ADSL and SDSL is the difference in upload and download speeds. SDSL allows the same upstream data rate and downstream data rate as ADSL upstream can be very slow.

[Http://searchnetworking.techtarget.com/sDefinition/0],,sid7_gci558545,00.html

HDSL High bit-rate Digital Subscriber Line, one of the earliest forms of DSL, is used for wideband digital transmission within a corporate site and between the telephone company and a customer. The main characteristic of HDSL is that that provides equal bandwidth in both directions.

IDSL is a system in which data is transmitted at 128 Kbps on a regular copper telephone line from a user to a destination using digital transmission.

The Local Loop enables operators to connect directly to the consumer via copper local loops and then add their own equipment to offer broadband and other services. This process involves operators accessing local exchange buildings to connect to a network of copper lines which connect them to homes and businesses. BT is an Example of a Local Exchange. The local loop connecting the telephone exchange to most subscribers is capable of carrying frequencies well beyond the 3.4 kHz upper limit.

Benefits of using DSL

DSL can provide a virtual instantaneous transmission of voice, data and video over ordinary copper phone lines. A DSL connection can eliminate delays while waiting to download information and graphics from the Internet. It provides users with a cost effective high speed Internet connection. Another benefit is that a DSL connection is always on-line (like a LAN connection) with no waiting time for dialing or connecting.

There are now more than 10 million broadband connections in the UK. By December 2005 there were 9.792 million broadband connections in the UK and the average broadband take up rate during the three months to December was more than 70,000 per week.

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