VoIP Via Satellite Internet
VoIP has revolutionized the way telecommunication is done. Voice over Internet protocol allows voice packets to be sent over Internet bandwidth enabling cheap communication. There are many companies which offer voice over Internet services and some of the leading ones are Vonage, Skype, Yahoo and Net2Phone. Consumers can access VoIP over Internet connections like broadband and DSL. Satellite Internet is a new technology that has become very popular in recent times and VoIP providers are able to offer services to customers in remote regions using it. It will still take some time until VOIP by satellite is ultimately stabilized and customers can enjoy the full benefits.
Some of the challenges faced by service providers include packet loss, jitters and limited bandwidth. Service providers like Hughes and Skyframes which have their own satellites are teaming up with the VoIP providers to offer voice services to customers. Designing a VoIP network would require details on the bandwidth requirement for VoIP data. Satellite Internet providers are facing challenges on the bandwidth capacity that would be required to offer VoIP services via satellite channels. G.729 (b) encoding with a 40 b payload and header compression would require 10 Kbps of bandwidth. Packet loss is another challenge faced by service providers offering satellite VoIP services. Packet loss causes degradation in voice quality. The protocol used for voice traffic transmission is UDP/IP and if the data packets are corrupted they cannot be retransmitted. TCP/IP protocol allows retransmission of data packets. It is important to maintain very low bit error rates to offer high quality voice services to customers. Jitters are another technology hurdle that is faced by satellite VoIP service providers. It is used to calculate the delays in packet arrivals that happen because of network delay. If this factor is not within acceptable limits the quality of voice becomes poor and the receiver may not be able to enjoy a good conversation. Jitter buffers are used to overcome this hurdle and ensure that there is less delay in the network. Researchers and scientists are working relentlessly to overcome all hurdles that come in way of experiencing a smooth voice call through satellite Internet.
VoIP by satellite is not ideal because of some more factors. Latency factor refers to the time delay in locating the Geo-stationary satellite and the speed of light. There is a delay of 280 msec because of latency factor. Traffic congestion in the network also affects the quality of VoIP service. This can result in voice packets being dropped, delayed or reaching the receiver out of sequence. Compression technology is another parameter for delivering high quality VoIP service. There are two compression technologies that are followed as industry standards. The G.729 codec uses bandwidth of 18Kbps and RTP uses around 10 Kbps per second. If service providers are able to cope with the technological challenges of VoIP over satellite, it will not be long before remote areas of the United States can connect with the rest of the world.
By: Ned Hughes
About the Author:
HughesNet offers high speed Satellite Internet to rural areas where DSL and Cable modem do not reach. More at: http://www.GetDSLtoo.com/
Filed under: Computers
Verizon Fios Offers Painless Installation
Painless Installation with Verizon FiOS
Signing up with a broadband Internet service provider can involve a very difficult installation, or paying through the nose for a professional installation. With Verizon FiOS fiber-optic Internet access, you receive free professional installation with your one-year contract.
One of Verizon’s trained, professional installers will come to your home to install your Verizon FiOS Internet service at your convenience. You won’t have to struggle with installing wiring or hardware yourself, and you’ll have the assurance that everything is working before the technician leaves your home.
Your professional installation of Verizon FiOS includes installing the necessary wiring to your primary computer. If you use a wired or wireless home network, the other computers in your home can access the Internet through your primary computer using wireless or Ethernet network adapters, also available from Verizon.
If your installation requires any wall jacks for telephone service, your installer will set up the jacks as part of your installation service, at no additional cost. With your one-year Verizon FiOS contract, you get all the installation services required to get you up and running, at no charge.
After setting up your hardware, your installation tech will install the Verizon FiOS software on your computer. If you’ve ever wrestled with a new software installation, you’ll appreciate having a pro get the Verizon FiOS software running for you. While the software is very intuitive, you’ll no doubt be glad to spend your time on something else, and let your technician handle this installation.
Your installer will connect your computer to the Internet and verify that your Verizon FiOS connection is working properly. Before the technician leaves your home, you’ll be surfing the Internet at lightning speed, courtesy of Verizon FiOS’s fiber-optic network that extends all the way into your home.
Once your Internet connection is working, your Verizon technician will migrate any voice services on your account to Verizon FiOS and make sure your new FiOS phone service is working properly.
Finally, your installer will present you with a welcome kit with all the information you need to get the most enjoyment and use out of your Verizon FiOS connection, including games, entertainment and Verizon Central. Any questions you may have about your Verizon FiOS service will be answered in this welcome kit.
Professional installation is just one of the many benefits of your new high-speed, fiber-optic Verizon FiOS service. You’ll also receive the fastest possible Internet access in your home, great entertainment and games through the Verizon network, and the confidence of knowing that you’re working with Verizon, one of the largest providers of telecommunications services in the world.
Changing Internet providers can be nerve-wracking, particularly if you’re not particularly technically minded. Many Internet service providers charge high fees for professional installation, and installing the hardware and software yourself can be challenging and time-consuming. Verizon’s courteous, professional installers come to your home at your convenience, help you get up and running, make sure everything is in order, and let you spend your time using your new Verizon FiOS Internet service, not installing it.
By: Russell Blanc
About the Author:
Russell Blanc manages an online Consumer’s Guide and Resource to Verizon FiOS TV and High Speed Internet at http://www.ifibercompany.com
Filed under: Computers
Preview Internet Explorer 8
Internet browsing was always easily accessible with our default browser in windows operating systems. Internet explorer is the name which most of us would always remember. Internet explorer was first released with Windows 95 in 1995. Since then internet explorer has been capturing the market of browsers. Although since competition is very tough as there are lot of browsers in the market like Mozilla Firefox and Netscape but internet explorer has still managed to be on top. Microsoft has made internet explorer default browser and also windows help is always there to assist and end user.
Internet explorer started with various versions like IE 1,2,3,4,5 and later windows XP came equipped with IE 6. Prior launching new operating systems Microsoft launches the new and updated version of IE. Later windows vista came with IE 7 and now the guesses are over IE 8 has been launched prior launching Windows 7. Initially Beta versions were available for download where anyone can download and feel the experience and also check for any problems, bugs or drawbacks. Microsoft does not provide any Tech support for beta products neither entertains any claims vulnerabilities created by beta products. There is no Microsoft support, online Microsoft support for all these beta products. They are only meant for testing purpose.
Internet Explorer 8 is finally launched and now is available for download. Microsoft support is available for Internet Explorer 8 now. Internet Explorer 8 has been devised in such a manner that it protects the user from all the security threats that were posed to Internet Explorer 7. IE 7 was venerable to various viruses and security scams. Most of the users had to either call Tech support, Microsoft support or any computer support for fixing the issues with their browser or had to download a third party browser. Various IE 7 users had also fears of their information being leaked out on the internet and were reluctant in doing any kind of financial transaction online.
Internet Explorer 8 has given a clear signal to all the end users that this browser is equipped with latest security measures and also will not be an easy catch for Virus’s. Internet Explorer 8 is a very stable and enhanced browser. Online Microsoft help has lot of material regarding IE 8. It will explain you how to install and browse through Internet Explorer 8.
Preview
Internet Explorer 8 has is a very easy to install browser with option of selection of search engine. It even gets installed very easily where you would not require Tech support or Microsoft support to install it. The browsing is made easy and stability has been added in terms of session restoration. You can restore your previous sessions once the browser is closed unexpectedly or if there is an illegal system shutdown. By clicking on the address bar you can view all the previously visited WebPages with their brief description. You can also see favourites while clicking on the address bar in the browser. The tabbed browsing is of the same nature as in previous version of the browser.
Most of the times when we have contacted Tech Support or Computer repair we might have seen that most of the times the Tech deletes the browsing history and cookies. That enhancement has also been changed here with all the deletion options coming with check boxes. So you have liberty to check the boxes which you want to delete. Another enhancement is that Internet Explorer 8 is compatible with almost all the scripts and languages including Microsoft Silverlight. Safety options have also been added where you would do a private browsing without making your browser venerable to the security threats.
There are various other options available in Internet Explorer 8 which would help you in easy browsing. To experience the new browser you can download and install this browser on your windows operating systems like Windows XP, Windows vista and also enjoy the support from Microsoft help and online Microsoft help.
By: james burns
About the Author:
I am an online pc optimize specialist for iYogi , iYogi is the first direct-to-consumer and computer support service from India. iYogi now boasts of more than 50,000 customers.
Filed under: Computers
How organizations should respond to Internet safety?
Internet has become a necessary tool for day-to-day business activities and other communication. Also, blogs, social networking sites and other media tools have become the necessary part of today’s business. However, as per the latest data, after every 4.5 seconds one new infected webpage has been discovered, which sidelines the term trusted website to users. Thus, companies have to deal various financial and security risks from such breaches.
Here we discuss latest internet threats and various approaches required to safeguard users’ PCs and other resources.
Web-based malware: Exploiting trusted brands
Computer hackers do not discriminate between websites, while exploiting the vulnerabilities; therefore websites with high traffic volumes are most lucrative destination for attack. However, this does not mean that small websites are not vulnerable to hacking, they are always soft targets for professional hackers.
Recently, users have learned about the worms and malicious links from the email and other sources, but they are least bothered while using various social networking sites. Further, on these social sites easy sharing of personal information has opened a new horizon for web criminals. Therefore, such social networking websites have become the favorite target for today’s hackers.
In August last year, Facebook confirmed that about 2,000 users had been affected by a Trojan attack during displaying an animated graphic of a court jester blowing a raspberry. It is also reported that various Koobface worms were targeting these social sites. Initially it infected Facebook and MySpace, now Koobface aims other social networks, including MySpace, Bebo, hi5, GeoCities, Friendster and Tagged.
Anonymizing proxies
Various organizations are using URL filtering to check different web threats while web browsing. Thus, to dodge such filtering devices, new anonymizing proxies are fashioned daily and dispersed through blogs, forums and other websites. Developing such proxies is becoming a big business in the downturn economy and to identify and rectify such anonymizing proxies is difficult, tiresome and time-consuming task for IT administrators to fight them.
How organizations should respond?
Internet access has created a dilemma for IT administrators. They have to tackle web traffic from various social networking sites, blogs, forums and media portals, which have become important instruments for job recruitment, viral marketing, public relations and customer interaction. Thus, the companies have to follow a new approach for web security and control. These companies can follow various steps for web filtering.
1. Status-based filtering: Various companies can adopt the policy of reputation-based filters to fight against web-based threats. These companies may form a catalog of sites according to the hosted malware or unwanted content and by filtering URLs based on “good” or “bad” reputation for having proven tool against computer threats. However, this approach will not offer protection, when legitimate and proven websites are hijacked.
2. Real-time predictive malware filtering: Here, all the internet traffic has to pass through a scanner designed to recognize new malwares. In the approach, all the web traffic is checked through a combination of signatures and behavior based technologies. It also follows bi-directional scanning, where both the user request to, and the information returning from are scanned. However, this type of filtering is uncommon in the today’s market, as various IT vendors are using only signatures.
3. Content-based filtering: It checks all the web traffic and will decide the true file-type of content. After that, as per your company’s policy, you can allow or disallow this traffic. For example, using only business-type content, organizations can reduce the risk of infection through windows.
By: pirumandal
About the Author:
Filed under: Computers
The Various Advantages Of Using Internet Monitoring Software
There are thousands of people who wish that they could monitor someone else’s online activities. Each of us has been curious one time or another about the activities of an individual while online. This is especially true for a business, corporation, parent or a spouse. Now, one no longer has to be just merely curious about someone else’s internet activities. Internet monitoring software tools allows an individual, business or parent monitor the activities that are performed on a specific computer or a group of computers.
There are various advantages for a business to use internet monitoring software tools. These types of tools can be setup in a matter of minutes to monitor one computer or a group of computers. Once the tool is set up it will begin monitoring certain internet activities. Monitoring software tools are designed to monitor ingoing and outgoing emails and instant messages. This allows an employer to know what is being said about the company or specific people within the company.
An employer is able to view the keystrokes that are made, website surfing activity and the type of tools that are used on the computer. Each time an employee using the internet for personal reasons the monitoring tools will monitor these activities. So the employer can see who is shopping online while at work and who is working hard. The greatest advantage to an employer who decides to use monitoring software is that the tools can be accessed from any internet connection, twenty-four hours a day.
Parents have also been taking advantage of internet monitoring software tools recently. Parents can now monitor their child’s online activities. This is a great way for a parent to ensure the safety of a child while online. Parental tools are designed to monitor what a child is doing and for how long.
Also, the tools monitor emails, instant messages, chat room discussions and website activity. A parent can actually view both sides of a chat room discussion or read ingoing and outgoing emails. If a parent feels as if their child is in a dangerous situation then the parent can block a specific website or a chat room. This enables the parent to take control of the situation. One of the greatest advantages for a parent who uses monitoring tools is that the child is unaware of the monitoring software even running. This is an easy way for a parent to stay up-to-date on all of the online activities while a child is online.
There are several different types of internet monitoring software. A public Library uses a type of monitoring software tool that is designed to block and filter out inappropriate websites. Libraries and school districts have been using this type of technology for several years. Monitoring tools allows an employer or parent or spouse to monitor and view the online activities of another person. The website IPOWER Applications’ School Pow Wow is a terrific online resource that provides detailed information on monitoring software tools. Internet users can find the website at http://www.DoYouPowWow.com.
By: Iprwire Staff Writer
About the Author:
http://www.doyoupowwow.com is a leading provider of integrated ON-DEMAND applications for home content security and companies of all sizes. For more information on parental internet monitoring software and child internet monitoring please visit our site.
Filed under: Computers
Spaceway 3 Satellite Internet
HughesNet is the leader in Satellite Internet connectivity in the United States. It has 325,000 customers and the number is growing everyday. To meet customer’s expectations HughesNet has launched the Boeing built Space3 satellite into space. The Ka- band satellite was launched by the Ariane 5 ECA launcher from Kourou, French Guiana on 14th of August 2007. The spacecraft will maneuver in a circular orbit at a height of 22,300 miles above the equator at 95 degrees West longitude. Hughes will start using the satellite for commercial purposes in 2008. The Space3 satellite was designed and developed by Hughes because there was a need for commercial satellite to fulfill growing customer expectations. It has features such as onboard traffic switching and routing capability. Other advanced features include 10Gbps overall capacity, fast packet switching and dynamic beam forming. The satellite will help Hughes to launch bandwidth-on-demand satellite services with site-to-site, single hop networking of high performance ground terminals. The single hop communication between satellite terminals will eliminate the need for routing traffic through a central hub earth station. The Ka-band spectrum will help in high speed services for IP data and multimedia applications. The satellite has a digital processor, downlink phased array antenna, microwave switch matrix and flight hardware and software.
In the next couple of months Boeing along with Hughes will complete on orbit testing of the systems. It will also complete deployment of the satellite’s 132-foot solar arrays. An overall satellite checkout and systems acceptance testing will also be completed during this period. After completing all tests Hughes will put the satellite into commercial operation providing high-end satellite Internet connectivity to clients across America and Canada.
Hughes mission statement of ‘Connect to the Future’ through Satellite based Internet services can be partly achieved by the launch of the Spaceway 3 satellite. Like many other first’s to it credit Hughes will be able to offer high-end Satellite Internet services to customers and will move ahead of it competitor Wildblue. The Satellite Internet market has enough space to grow and the technology is being accepted by people across the length and breadth of the country. Customers in rural areas who do not get access to broadband and cable modem facilities will benefit greatly once Hughes puts the Spaceway 3 satellite into commercial use. The expected date of the start of commercial operations of the satellite can be anytime in the early part of 2008. HughesNet is a communication filed with the SEC has stated that Spaceway 3 can help address a US$ 26 billion per year market in North America. Apart from this HughesNet can offer services in Canada and Puerto Rico. The existing customers of Hughes are offered service using the conventional Ku-band satellite systems. They would need to change their existing equipment to receive services from the Ka-band Spaceway 3 satellite. There are licensing issues which Hughes needs to sort out before the commercial operation starts in early 2008. Once that is done customers can expect Satellite Internet connectivity with speeds that are comparable with any other technologies and no downtime of services
By: Ned Hughes
About the Author:
Hughes will be able to offer high-end Satellite Internet services via Spaceway 3 Satellite. http://www.SkywWay3.com
Filed under: Computers
How to Increase Your Internet Speed
Today worldwide Internet use. It made our life so much easier and faster. Everyone wants fast Internet speed. In general, to increase the Internet speed is the demand for the type of Internet connection you have. Internet Service Provider (ISP) provides different types of Internet connection, as dial-up connections that provide access to 2400 bps speed of 56 kbps, ISDN provide 46 Kbps to 128 Kbps, Digital Subscriber Line (DSL) 128 Kbps to 8 Mbps cable modem broadband connection offering 512 Kbps to 20 Mbps, wireless provides almost the same as cable modem connection. This dial-up access connection is slower than others. If you have dial-up network and you really want to increase Internet speed you should go with another type of connection.
On the other side many people are tired of supporting a slow internet speed even though the have fast Internet connection type. There are many reasons for poor Internet speed can be your computer is infected with viruses and spyware, setup your internet browser is not correct, the configuration of the firewall and any security software that can generate problem makes navigation Internet slow. You can check the settings to improve speed of your Internet antivirus update and maintain in an exploration period of 4-5 days, update the antivirus programs whenever patches come.
There are some more tips for optimizing high-speed Internet to improve your internet speed. You can follow these tips:
1. You can delete temporary Internet files, browsing history, Internet cookies, so that you can improve internet speed for that you can follow the steps Open Internet Explorer and go to
> Tools Menu
> Internet Options
> Here you can delete temporary Internet files, browsing history and cookies.
1. A magazine security settings Go to Tools> Internet Options> Security tab Cohoes and set the security level you like your request.
2. Correct the Internet security settings Open Internet Explorer and go to
> Tools Menu
> Internet Options
> Go to Security tab and set the security settings Desirable you want.
Open 3.Mange ins Internet Explorer and go to
> Tools Menu
> Select the Manage Add-ons option
4.The configuration of the advanced Internet option
> Tools Menu
> Select the Advanced tab and correct the settings as you want, for the best you can restore all default settings as well.
After you restart the computer once it is needed to implement and save the settings. All of the above is very beatifically to improve Internet speed. If you are the person who knows something about Internet Explorer you can do this for yourself easily.
By: james burns
About the Author:
I am a computer support specialist for iYogi, a leading IT support company Headquartered in India, iYogi provides computer support, antivirus support , via phone and remote access for home and small business users globally.
Filed under: Computers