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Accelerator products can help enterprises a lot in addressing the performance requirements of all enterprise applications including voip. First, Accelerators change the economics of wide area networking by squeezing an average of 100% – 400% more bandwidth with peaks of 1000% depending on traffic mix. This frees up link bandwidth to support high quality voip services – and it does it without expensive WAN upgrades.

It is also worthy to note that Accelerators do not actually use lossy compression schemes that might degrade voice quality and they add less than one millisecond of latency. In fact, the Accelerator’s compression actually reduces end-to-end latency by reducing serialization delays on WAN links. For example, it takes 125 ms to serialize a 1,000 byte packet on a 64 kbps link, but if an Accelerator increases the effective bandwidth by 4X to 256 kbps, the serialization delay is reduced by a factor of four to 31 ms. The following formula can be used to calculate the serialization delay for any combination of packet size and link speed:

Packet Size (in bytes) x 8 / Speed (in kbps) = Serialization Delay (in ms)

In addition to freeing up the bandwidth normally consumed by data applications, Accelerators are able to reduce WAN bandwidth requirements for different voip codecs. In fact, tests have shown that Accelerators reduced G.711 bandwidth requirements by 20% and G.729 by 70%. As a result, WAN links can carry more simultaneous voice calls and the performance of other applications may also be improved.

Accelerators solve increased jitter and latency caused by large data packets over slow WAN links by fragmenting large data packets and injecting voip packets at regular intervals. This feature allows voip and data to co-exist even on branch office WAN links. For example, normally, a voice over IP packet “stuck” behind a 1,500 byte packet on a 64kbps lin will be delayed by 188ms.

Using the Accelerator’s packet fragmentation will result in the data packet being reduced in size (accelerated – say from 1500 bytes to 500b bytes) and then fragmented into smaller data packets (say – 2 packets of 250 bytes each). In this case, the latency for the voip packet will go down from 188 ms to 31ms! In addition to increasing WAN capacity for both data and voip while reducing latency and jitter, Accelerators also manage WAN bandwidth to ensure that critical applications like voip get the bandwidth they need.

Accelerators include an Instant QoS feature that prioritizes application access to WAN bandwidth. Without such priorization, the additional effective bandwidth provided by Accelerators could be consumed by aggressive, non-critical applications such as file sharing. Accelerator’s AppView feature provides graphical visibility for all application traffic sharing a link. AppView can be used to monitor WAN utilization and to plan future capacity requirements.

And finally, ip accelerators have a set of data integrity features that are designed to stop the packet loss that can degrade voice quality. A flow control mechanism reduces packet loss caused by link congestion and a packet recovery feature ensures that any lost packets are transparently recovered at the link level before they can cause voice quality problems.

Jim Francisto

Searching for the best removal software spyware cannot intrude upon, can be time consuming. One can spend days searching for the best spyware adware removal program, but if one knows which ones are highlighted by the experts, then the time spent looking for great removal software that spyware cannot get past, will not be too labor intensive. The key is to know which software is recommended.

However, through the years, spyware has evolved and today, one cannot be too careful when protecting themselves against this invasive form of marketing.

removal software spyware
Basically two types exist. One can choose either real time or scanning and removal. Real time works while one is on the computer, and scanning and removal is done when the computer boots up. No matter what program one chooses, the fact that one is trying to protect their computer and data is the key.

A few of the best download spyware adware removal programs can be found on the internet. Webroot Spysweeper is the best, but it is not cheap spyware removal. One will pay to use this program. Others that can be found on the net include Ad-Aware, Spybot, and the microsoft removal spyware system known as the Defender.

Depending on what one is looking for in a adware spyware removal download program, they can find it on the net with just a little research. It may not be free, but you will get the protection for which you have paid.

download remove spyware
For those searching for the best removal software spyware cannot touch, they may find that their search takes them on a meandering highway on the internet. Anyone can find pc spyware removal programs that help with spyware and adware, but a person should not skimp when it comes to protecting a huge investment like a computer.

The fact that one is being proactive in purchasing anti spyware is key to protecting their identity and computer from future attacks. No one wants to lose their identity because they did not outfit their computer with the right protection in the first place.

Knowing that you need to better understand this topic about compter moniters I suggest that you take 5 to 10 minutes to read what we have to say.

You may be seeking to take your gaming system to a higher level, then you need to think about buying one of those phenomenal widescreen computer monitors. only recently I upgraded from an old widescreen CRT, and wow the difference was utterly amazing . Unfortunately you can’t just plug in an old LCD into your computer and create a widescreen computer monitor.

Even if you could connect the LCD because you have the right connections and use it as a widescreen computer monitor you would more likely be dissatisfied with the results. There are lots of LCDs that were designed to be widescreen computer monitors, just make sure you know what to look for.

Widescreen computer monitor facts:

The most significant thing for a gaming computer monitor is that it able to respond to your commands. While there are many monitors out there that can display your games with sensational clarity, you need to have the response time in order to play them effectively, especially for the latest generation of online first person shooters.

In addition to that you need to make sure that widescreen computer monitor will be able to display games at their best. Most of the monitors should have a response time of less then 5 milliseconds and a upper limit display of 1920 by 1200 pixels. Acquiring a monitor with these 2 things should guarantee that it is more than equal to displaying anything you throw at it.

After you have found a couple widescreen computer monitors that have these requirements you can start to shop for different monitors to select from. I would take a look around for customer reviews and start reading through to see what people think. Each of the widescreen computer monitors will have their own different and varied features, so search through until you find one that has all the little things you want. Don't forget to check out and see how the monitor plugs in as well.

While you can get adapters that will convert the different signals it is probably better to buy a monitor but will communicate directly with the on board card. This make sure you get an 100% perfect display.

Don’t rush when searching for a gaming monitor, just know that the right widescreen screen computer monitors are available, you just need to find one. So good luck with your search, and hopefully this article has been helpful.

For Tips And Information about widescreen computer monitors and flat computer monitors, please check out our website.

You can determine how much voip bandwidth to set aside for voice traffic using simple math. However, in a converged voice and data network, you have to make decisions on how much voip bandwidth to give each service. These decisions are based on careful consideration of your priorities and the available voip bandwidth you can afford. If you allocate too little voip bandwidth for voice service, there might be unacceptable quality issues.
Another consideration is that voice services are less tolerant to voip bandwidth depletion than that of Internet traffic. Therefore, voip bandwidth for voice services and associated signaling must take a priority over that of best-effort Internet traffic.
If a network were to use the same prevailing encoding (CODEC) scheme as the current PSTN system, voip bandwidth requirements for Voip networks would tend to be larger than that of a circuit-switched voice network of similar capacity. The reason is the overhead in the protocols used to deliver the voice service.
Typically, you would need speeds of OC-12c/STM-4 and higher to support thousands of call sessions. However, Voip networks that employ compression and silence suppression could actually use less voip bandwidth than a similar circuit-switched network. The reason is because of the greater granularity in voip bandwidth usage that a packet-based network has in comparison to a fixed, channel size TDM network.

Allocations of network voip bandwidth are based on projected numbers of calls at peak hours. Any over-subscription of voice voip bandwidth can cause a reduction in voice quality. Also, you must set aside adequate voip bandwidth for signaling to ensure that calls are complete and to reduce service interruptions. The formula for calculating total voip bandwidth needed for voice traffic is relatively straightforward. The formula to calculate RTP bearer voice voip bandwidth usage for a given number of phone calls is as follows:

Bits per sec = packet creation rates per sec x packet size x number of calls x 8 bits per sec

Where samples per sec = 1,000 ms / packet creation rate

Example: 2,000 full-duplex G.711 encoded voice channels that have a packet creation

Rate of 20 ms, with a packet size of 200 bytes (40 byte IP header + 160 byte payload)

50 samples per second = 1,000 ms / 20 ms

160 Mbps = 50 x 200 x 2,000 x 8

Note that this number is a raw measure of Voice over IP traffic and does not take in account the overhead used by the transporting media (links between the routers) and data-link layer protocols. Add this raw IP value to that of the overhead to determine the link speeds needed to support this number of calls. Note this value represents only the bearer (voice) content. Signaling voip bandwidth requirements vary depending on the rate at which the calls are generated and signaling protocol used. If a large number of calls are initiated in a relatively short period, the peak voip bandwidth needs for the signaling could be quite high. A general guideline for the maximum voip bandwidth requirement that an IP signaling protocol needs is roughly three percent of all bearer traffic. Using the previous example, signaling voip bandwidth requirements if all 2,000 calls were initiated in one second would be approximately 4.8 Mbps (3 percent of 160-megabits).

With the calculation of bearer and signaling, the total voip bandwidth needed to support two thousand G.711 encoded calls would be an approximate maximum of 164.8 MB. This ip bandwidth requirement is a theoretical maximum for this specific case. If the parameters change, such as call initiation rate, voice encoding method, packet creation rate, employment of compression, and silence suppression, the voip bandwidth requirements would change as well. With large Voip implementations requiring sizable voip bandwidth, it becomes imperative that the IP network delivers the needed service at predictably high performance.

Jim Francisto
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One of the key processes of the Macromedia/Adobe Flash software is “tweening,” which makes changes to the shape or position of an object. The actual definition of Flash is streaming animation for web pages. This streaming animation can be used on an entire web page or you may choose to use it as only part of an html page. The desired result is the appearance of the first object evolving smoothly into the last object.

flash animations
What goes hand in hand with Flash animation? It would have to be Flash text. Flash text is exactly what it sounds like. On your website you can turn plain text into text that moves and is full of colors and life. Many individuals have recently added Flash text to the rest of their “cool animations” on their pages and they claim the return traffic on their websites has risen. Flash is the industry standard software to create 2D animations.

Ok, you have finally got your website up or at least somewhat up, what’s next? Modern technology has improved on so many different levels and animation, or more specifically flash animations, is one of those leading resources. You need every possible edge when trying to catch and keep internet traffic focused on your site. Whether Flash text, art animations or 3d computer animations, it is not as important as the final product. Since everyone has a website now and many different techniques are out there, your site really needs to pop in order for people to notice.

graphics animations
At one time, networking was basically limited to who we could call or meet face to face. Beyond that was of course word of mouth, paid print and media advertising. Even then it was likely restricted to the local market, as the expense of getting a message to the next town, state or country was high.

What could you do? With the internet anything is possible, so you want your site to stand out with graphics movie animations, pictures animations, Flash 2D animations and even 3D animations. Fortunately, the internet makes your business globally accessible, so you can reach out and touch millions of online viewers. These days, you can rake in dollars, yens, euros, pounds, rubles, pesos etc. because the world is the playing field.

computer animations
Having a website allows you to reach a broader audience. You may be set up in Idaho, but your site with its Flash animations can reach someone in Singapore within a matter of seconds.

Your optimized website gives you the freedom of showing off all of your work, not just the samples that fit into your portfolio or the ones that are short enough to present within the time frame you are given. There are computer animation programs that allow you to create animations at every level of expertise.

Before you purchase your widescreen monitor, there are several things you need to consider. It is important that one keeps in mind the sales figures of wide screen monitors while shopping. Many marketing departments also manipulate numbers in order to sway a customer’s buying decision.

It is a good idea to do research on widescreen monitor before purchasing one in order to make the right decision.

Points to consider when shopping for a Widescreen Monitor.

When you purchase a wide screen LCD monitor you should keep in mind that you could spend a lot of money which is why you should have a budget so that way your buying decisions will be a lot easier. {Be aware that a good quality widescreen monitor will likely cost you no less than $200.} If you are looking for a high end large television, your budget can skyrocket up to more than a couple thousand dollars.

Next, determine and justify the purchase and purpose of buying the widescreen monitor by asking yourself if your main intent is to use it for watching movies or playing video games. The required resolution of your screen will depend on the whether you intend to use it for video games or movies. The video card does dictate how high the resolution is for a video game, but a monitor can limit how high the resolution is, due to response time.

A response time of 5 milliseconds is standard for most gaming applications. After you figure out what the highest supported resolution is for your video card, find a monitor with that same resolution.

After using these criteria, you should search online for customer reviews of the wide screen monitors that are left. The reviews provided by other users will let you know right away if the monitor is junk.

There will be more positive reviews about a quality monitor than an inexpensive monitor. I would be wary buying this equipment if you have trouble finding reviews on it. When searching for the right widescreen monitor, be sure to utilize all of these tools.

For more articles on widescreen monitors and flat monitors, check out our website.

Hardware maker Nvidia has announced thier new computer that has the power of a cluster of computers at a small fraction of the cost.

Nvidia, working with several partners, Dell, Lenovo, Asus, Western Scientific, and others, has developed the Tesla Personal Supercomputer, using the graphics processing unit based on Nvidia’s Cuda parallel computing architecture.

Burton Smith, a technical fellow at Microsoft stated while there have been claims of desktop supercomputers in the past, “this time it’s for real,”

Nvidia representiatives say computers using the Tesla C1060 GPU processor will have something like 250 times the processing power of a typical PC workstation, enabling researchers to run complicated simulations, experiments and number crunching processes without the need for a supercomputer.

This so-called "personal supercomputer" will incorporate anywhere from between two to four Tesla C1060 processors, which are made up of 240 stream processing cores.

A computers cluster can run a many times the cost of one of the Tesla-powered workstations. The Tesla C1060 card, available on computers Tuesday, will sell for $1,699, with desktop computer systems including the card selling for less than $9,995, said Andrew Humber, an Nvidia spokesman. The systems would run at a processing speed of four teraflops, or four trillion floating point operations per second.

"This represents phenomenal price/performance for computational researchers who have typically had to compete for time on expensive and power-hungry clusters," the Nvidia spokesperson said.

Several institutions, including the University of Illinois at Urbana-Champaign and Cambridge University,and the Max Planck Institute are already using GPU-based personal supercomputers.

“GPU based systems enable us to run life science codes in minutes rather than the hours it took earlier,” Jack Collins, manager of scientific computing and program development at SAIC-Frederick’s Advanced Biomedical Computing Center in Frederick, Maryland, said in a statement. "This speed-up has the ability to accelerate the discovery of potentially life-saving anti-cancer drugs.”

With most High-Performance Computer (HPC) clusters and supercomputers using conventional CPUs, Nvidia is betting that its general-purpose GPUs can offer the types of performance that scientists, researchers and other workers in the HPC market need now to run these types of workloads.

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Everyone wants to have a computer that can go with them no matter where they go. Finding the best laptop deals for your needs is going to be something that you might struggle with, simply because there are many different laptops out there, and many situations where you are going to have to research before you buy. So how do you know when you have found the one for you?

Picking a laptop is a little like choosing a car – does it fit into your lifestyle and fulfill your needs?   Before your go shopping for any laptop deals, you need to think carefully about what you need the laptop to do.   If you are a college student, you definitely need fast Internet access and the ability to use word processing programs to write papers.  But if you are a businessperson who needs to show a lot of graphics at presentations, then you will have different requirements for your laptop.

Laptop reviews are a one-stop place where you can learn about what is great about particular laptops and what the downsides to them are, and you also need to do more than simply read up different laptop reviews because you should have a focus in your mind as to what you need from the laptop, as then you can narrow your choice to those makes and models which meet the exact standards that you expect from your laptop.

Do you need to add a lot of peripherals to your laptop?  Peripheral is a fancy word for any accessory that can plug into your laptop like a webcam, a projector or your cell phone.  You have to be sure your prospective laptop can handle all these accessories.

There are a lot of fancy, multi-syllabic words used in laptop deals.  “DVD player included” is one – but this is a standard feature on most laptops.  Most also have a CD recorder included, as well.  Also, one of the main reasons for the cost of a laptop is its weight (or lack thereof).  Generally, the lighter the laptop, the more expensive it will be.  If you don’t mind carrying a few extra ponds (which could help give you exercise), then you should be able to find a great laptop deal.

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When people say desktop computer, they are usually referring to a PC; although they may in some cases be talking about a Macintosh computer. In any case, the term is used for computers which are designed to be set up in one location and to stay there, unlike a laptop where portability is the idea. In the days when microprocessors were anything but micro, any computer which could be comfortably accommodated on a standard office desk was known as a desktop computer (and for the time, these were considered small). Today, people use the term desktop computer to refer to a specific kind of CPU casing. However, desktop computers come in many shapes and sizes from form factor models where the CPU sits behind the screen of the computer to the traditional tower style of casing.

A desktop computer per se, means a horizontally oriented casing. This design is intended as a spaced saving measure, since it allows the monitor to be placed on top of the computer casing itself. Most modern desktop computers use a separate monitor, keyboard and mouse – however, any home theater systems use a modified style of desktop casing, with controls for video and audio mounted on the front panel.

All in one computers are those which combine the monitor and CPU into a single casing, as seen in the mid-eighties Macintosh 128K and the late nineties’ iMac. There were precedents for this style which include the Kaypro II and the Commodore PET 2001. All in one PCs are designed to be somewhat more portable than a traditional desktop computer, often featuring (as in the case of the iMac), carrying handles built into the casing of the computer.

The weakness of all in one desktop computers is the same as that of many laptop computers. This is that it is difficult if not impossible to perform upgrades on many of the components. In many cases, the CPU and other components are permanently attached to the motherboard, making upgrades an impossibility.

One thing that desktops have over laptops is that all of the extensions and spare parts tend to be standardized resulting in greater availability and lower prices. For instance, the ‘Form Factor” of the motherboard is likened to the ATX form factor. There are several standard expansion slots just like the PCI or the PCI express. Laptops usually have one PC card slot along with one mini PCI slot. This means that a desktop can be upgraded and customized only tend to have one mini PCI slot and one PC card slot. Procedures for the (dis-)assembly of a desktop tends to be simple and standardized to a great extent as well. This tends not to be the case for laptops, although adding or replacing some parts, such as the rechargeable battery, the optical drive, hard disk and the addition of an extra memory module is quite easy.

Desktop users also do not have to worry about power management, since there are no batteries to consider. A desktop also tends to run faster than a laptop, since there is more room for heat to escape. Additionally, the microprocessors in use in laptops use less power and generate less heat, but also have less processing power than desktop microprocessors.

A Guide For Upgrading Toshiba Notebook Parts

Eventually your computer will probably breakdown or may need some type of repair, or you may just want to upgrade and replace you major components to the latest current technology.  This can be done fairly easily with a desktop computer however with a Toshiba laptop it could be a little more challenging.  But there are some upgrades that can be done yourself using either Toshiba parts or even generic parts but there are other upgrades that should be left to the professionals.

Lets examine some circumstances to determine if your laptop is completely gone or if you can use Toshiba notebook parts to fix it.

Common Laptop Upgrades

By consulting your owners manual or going online you should be able to determine what parts can be upgraded or replaced in your laptop.  Usually the hard drive as well as the memory can be upgraded.  If you have the knowledge to handle the upgrades yourself you will save some money, otherwise it is best to let a professional do it.

When it comes to memory you are probably better off using genuine Toshiba notebook parts on that but hard drives are made by other manufacturers and you need to check your manual for compatibility.

Notebook screens are not upgradeable.  You would need a whole new notebook for that which, for some reason, is really difficult to get some people to understand.  Trust me, you cannot upgrade your screen to a 17″ screen in your existing notebook.

Dead Laptop

Even though notebooks are much more durable than they used to be, dropping a laptop that is not protected by some sort of case my due serious damage to Toshiba notebook parts and circuits.  Dropping the notebook in water may be fatal.

Parts That Can Be Repaired

People are always surprised to hear this but you can fix a defective notebook screen by using Toshiba notebook parts.  I am not sure why this always surprises people but a dead screen can be fixed.  A bad power supply can also be fixed using Toshiba notebook parts as well as a bad battery.

The DVD drive and CD-Rom can be replaced or upgraded using Toshiba notebook parts.

To find more ideas on laptops go to Computer Laptop Parts as well as Custom Desktop Computers