Wednesday, 25 June 2008

Comparing Camcorder Specifications

By: Remy Jirek

Comparing camcorder specifications before you make a purchase is a good idea. With a little time investment you can make sure that you make a good money investment. For example there are many hi definition camcorders available, but not all of them are created equal. The same goes for analog camcorders, hi-Res camcorders, digital video cameras, and handy cams. You cannot just assume that all hi def camcorders will provide the same quality picture.


Comparing specifications of each camera will insure that you get the best quality camera for your money. You also need to keep in mind which specifications are most important to you. This will all depend on what you intend on using your camera for.

One specification you may want to look at is the zoom. Make sure you look at the digital and optical zoom. The amount of zoom a camera has can vary greatly. If you are just going to be using your camera for recording special occasions and family events you will probably not need a camera with a huge zoom. Many times you will be close enough that you do not need to use all the zoom that the camera is capable of. If you are more of a professional you may need a camera that is a little more sophisticated.

Size of the camera is another concern for some people. Size used to reflect the quality of the picture that was recorded, but not anymore. Thanks to companies like Sony, Panasonic, and Canon, to name a few, size does not affect quality. Mini cameras can now take just as high-quality pictures as the bigger ones. Once again what you will be using your camera for will help you determine how much size will affect your decision.

Another specification that you might want to look at is what you will be recording on. You can now buy HD camcorders, and digital camcorders that record on tapes, or DVD's, or right onto a hard drive. If you are recording onto a hard drive you will want to know how much memory you have available. You can get many hours of recording on a hard drive. With a hard drive you don't have to worry about carrying extra tapes around with you. You also don't have to worry about running out of tape in the middle of your special occasion. Your hard drive will insure that you get the whole event on one tape without interruptions.

Battery life is another specification that may be important. Some batteries will record more hours than others. If you plan on needing your camera for long periods of time you will want to make sure you have a battery with a long life. The fewer times you have to change the battery or the tape the easier your recording will be.

There are many specifications for you to compare when purchasing your camcorder. Make sure you do a little research so that you know what you are looking at when you get to the store.

High definition camcorder shopping can make your head swim. Too many models, brands and options to keep track of! Come visit us for loads of information and tips to help you sort through it all: High Definition Camcorder Guide

Thursday, 19 June 2008

Is Internet Phone Service (VoIP) Worth the Switch?

By: Christoper Spencer

You've seen the advertisements. You probably know at least one person who has tried it, but is Voice Over Internet Protocol (VoIP), a.k.a. Internet phone or digital phone, for you? Let's face it. Your traditional phone service works pretty well, so why switch? The answer is savings.

Let's start with the basic monthly plan. The average monthly residential Internet phone plan is approximately $25/month. Business plans are roughly double the residential rate. Usually included within this price are loads of free features like voice mail, call waiting, three way calling, caller id, and call forwarding. Traditional phone service ranges from approximately $15/month to $60/month depending upon add-ons, long distance, taxes, and surcharges. Internet phone service may be for you if you are on the higher end of this scale. Moreover, many cable companies offer Internet phone service as part of a bundled package- Internet, television, and home phone service on one bill. This combination may prove to be very cost effective.

International calls are extremely cheap with Internet phone. Rates can start from around $.02/min., depending upon the destination country. Also, some calls may even be free. For example, if you subscribe to XYZ Internet phone service, and you call a friend overseas who also subscribes to XYZ, the call should be free. You can even take your Internet phone service with you when you travel. If you have a wi-fi Internet phone, you should have service wherever there is a wi-fi hotspot worldwide. Or if you take your hardware with you (i.e. telephone adapter, router, IP phone), you should be able to use your service wherever there is a broadband Internet connection available. Thus, frequent travelers or people with overseas relatives and friends would greatly benefit from Internet phone service.

Business owners stand to benefit the most from switching to Internet phone service. High long distance volume, systems integration, phone number mobility, and local market presence are the main reasons why. First, businesses have inherently high call volumes, especially domestic and international long distance. VoIP should lower these expenses, lowering monthly overhead. Second, VoIP is highly flexible and meshes well with other business applications. Third, businesses spend thousands of dollars annually on advertising, and those dollars are wasted if a phone number has to be changed. VoIP allows a business to keep the same number regardless of location. Closely related is the issue of local market presence. With VoIP, businesses can have a local phone number but be located in a different city, state, or country. The cost to you is just a local phone call. Despite the many benefits of VoIP for businesses, there is one major concern - security. Since voice conversations travel via the Internet, VoIP systems are susceptible to the same perils as your computer (i.e. hackers, viruses, etc.). Small to medium sized business are less of a target than larger businesses. However, all businesses utilizing VoIP should have up-to-date security software and contingency plans in place to minimize the threat.

Despite the many benefits of VoIP, there are a few issues that require consideration. These issues include: voice quality, power outages, emergency services, alarm systems, fax capabilities, digital video recorder (DVR) devices, local number portability (LNP), and broadband Internet requirement. For you, these issues may be just a intermittent irritation, like a dropped phone call or poor signal reception during a cell phone call. For others, these concerns could be insignificant or a deciding factor.

With Internet phone service, voice quality depends heavily upon the quality of your high speed Internet connection. So if your connection is not fast enough, voice quality may be inconsistent. It's always best to test your broadband connection with a VoIP speed test before subscribing.

Presently, unless an alternate back-up power source is readily available, Internet phone service will not work during a power outage because vital pieces of equipment such as routers, analog telephone adapters, and modems require power. Aware of the problem, some companies supply equipment with built-in battery back-ups. Other companies will route calls to an alternate phone number during an outage. Or, you could purchase an Uninterruptable Power Source (UPS) to provide power during an outage. The amount of power supplied by UPS's will vary by model and price. Barring the aforementioned, be ready to use a cell phone during a power outage, or consider keeping a bare minimum landline as a back-up.

In 2005 VoIP companies that interconnected with the public telephone network were required by the Federal Communications Commission (FCC) to provide 911 service and disclose service limitations. When you dial 911, calls are routed through a Public Safety Answering Point (PSAP). E911 (Enhanced 911), which is utilized in many areas, allows the PSAP to automatically discern your location. Due to the dynamic nature of VoIP, your location is more difficult to determine. Many companies have bypassed this obstacle by sending the PSAP the address of the subscriber. However, all PSAP's are not set-up to receive VoIP data. In which case, you would have to provide your location to the call center. As more and more people use Internet phone service, upgrades are being made to provide E911.

Presently, most alarm systems use a landline for monitoring purposes. Your alarm system may work with VoIP, although some equipment adjustments and testing may be required. Since VoIP data travels at higher speeds, these adjustments involve the lowering of these speeds. Similarly, faxes may be sent over a standard VoIP line, with equipment adjustments needed in many cases. To mitigate this problem, many companies offer designated fax lines as an add-on or as part of a business service plan. Additionally, many digital video recorder (DVR) devices require landlines to receive updates. However, some subscribers have reported successful DVR operation with VoIP. For a seamless transition, if you already have a DVR, you may want to check to see if it has a broadband port before subscribing to VoIP service.

When subscribing to Internet phone service, many people prefer to keep the same phone number, and in most cases this is possible through local number portability. LNP is the process by which consumers can transfer their phone numbers when changing telecommunications carriers. This process can take from approximately 10 to 20 business days until completion.

Finally, VoIP requires a high speed broadband Internet connection. For those of you who already use broadband Internet, this is not an issue. However, millions of people still use dial-up or have no Internet access at all. Therefore, this segment of the population must evaluate the cost of upgrading to broadband Internet versus the benefits of Internet phone service.

Is VoIP worth the switch? Individual answers will vary. Using the aforementioned considerations, a side-by-side comparison between your traditional phone service and your potential VoIP provider should prove to be informative at the very least. Savings is the key. If your potential savings outweigh all other factors, by all means, internet phone service should be worth the switch.

Tuesday, 17 June 2008

Three Dimensions to Protect your Computer

By: Isaac Chu

First - Strengthen the defense of your computer
- Install Firewalls"Firewall" is an isolation technology to separate the internal network and the Internet. The firewall carries out some filtering when two networks communicate. It lets the data/person that you "agree" to enter your network, and also block the data/person you "do not agree" from your network. It can prevent they changes, copy, or destroys your material. To ensure the firewall get into work, you must keep it update.
- Install Anti-virus software The key on computer virus is not "Kill" is "Prevent". You should install the Anti-virus software and start the real-time monitoring process and keep the software and the virus definition file updated. To guard against the newest virus, you should set the update process in a daily mode. Also, in every week, you should scan the computer completely for the virus.
- Guard against SpywareSpyware is a program that is installed without the user authorization. It can get the information and send to a third party. Spyware can attached in software, executable image and break into the user computer. They are used to track the computer usage information, record the keyboard hits, or take a screen capture. To get rid from spyware, you can- raise the security level of your browser- install software to guard against from spyware- verify with the official website about the software plan to install
Second - Against from attacks
- Refuse unknown software, emails and attachmentsDon't download unknown software. Save all downloaded softwares into one single directory and scan it before install. Don't open any unknown email and its attachments. Many viruses are spread through by using email. Don't open unknown emails, especially those with interesting headline.
- Don't go to hacker and pornographic websiteMany virus and spyware are come from these websites. If you browse this website and your computer is not secure enough, you can imagine what will happen next.
- Avoid share foldersShare folder is risky and outsider can surf around your folder freely. When you want to share folder, remember to set a password. If you are no need to share the folder any more, remove the sharing immediately. It is extremely danger to share the whole drive. If someone removes the system file, your machine may be down and cannot start up again.
Last - Keep Checking/Update
- Set different and complicate passwordIn Internet, there are thousand needs to use password, like e-banking, login account, email. Try to use different password for different operation, this can limit the loss if one of the passwords is broken into by someone. Avoid using meaningful password, like birthday, telephone number. You should use password with letter and number. One more thing is do not choose "Save Password" option.
- Beware of defraudThe number of defraud case in Internet is keep increasing. Build up a fake bank website, send out an email to ask for password. Before take any action, try to verify it is real or not. You can phone to bank hotline to ask, go to the bank to contact directly.
- BackupBackup is the last step to guard against the attacks. If your computer is hacked, the operating system and softwares can be reinstalled. But the data can only be restored if you frequently make a backup.

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