The Advantages and Disadvantages of Using VoIP

VoIP, or Voice over Internet Protocol, is fast becoming favorite choice to the telecom people. Everyone is jumping on the internet phone (or IP phone) and the promise of cheap phone service for all.

However, like all rising technologies, the excitement sometimes go beyond the reality, and while VoIP is certainly a promising new technology that will indisputably change the way we think of the telephone, there are still a few bugs. It isn’t right or even available for everyone yet, but for many VoIP provides pretty good alternative compare to traditional phone service.

Let’s explore an overview of the major advantages and disadvantages of VoIP

Advantages of VoIP:

If you have a high speed broadband connection with either DSL or cable, you can use VoIP and avail yourself with the main advantage of VoIP telephone service – low cost. For a PC-to-PC phone call it can even be no cost to any other computer anywhere in the world, if they has VoIP service installed as well. While there is usually a cost to make a PC-to-phone connection, it is usually less than a traditional call.

Many VoIP service providers charge a monthly fee allowing you to make unlimited calls within a specified geographical area, with a nominal extra charge for calls outside that set area.
For the traveler, VoIP provides an advantage of portability. As long as you have access to a broadband connection you can easily and cheaply keep in touch with family, friends, and business associates. Just have a headset with speakers and a microphone or IP phone in your bag. Then all you need to do is sign-in to your VoIP service and make your call. No worrying about coverage, roaming, or long distance charges.

This portability is available for phone-to-phone VoIP service as well. Your VoIP service provider will provide you with an Internet phone number that follows you wherever you move.
Many of the same features, which you’ve come to expect as a standard with your traditional telephone service and cell phone service, are available with VoIP service. Services like call forwarding, call waiting, voicemail, caller ID, three-way calling and more are available through your IP phone, usually at no extra charge. You can also send data, as you would expect with a broadband Internet connection, like pictures and documents, all while talking on the phone.

Disadvantages of VoIP:

Well, for one thing, most people still don’t have a broadband Internet connection, though that number is steadily decreasing. And there are other problems yet with VoIP.

Two of the biggest problems are power interruptions and emergency calls.

When your power goes away, you can still pick up your traditional phone to call. This is because a traditional phone is powered by the phone line. This isn’t the case with an IP phone. If the power goes away, there is nothing to power your high speed broadband Internet connection or your IP phone. A workaround is to use battery backups or power generators to keep you VoIP service alive but that is certainly more of a hassle than just picking up your phone and having it externally powered.

An even more serious concern is that of emergency 911 calls. With a traditional phone, a 911 call is quickly traced to its origin and routed to the nearest call center where the operator will be able to see your location on his or her computer screen. This is not the case with VoIP. It is not possible to decide where a VoIP call is originating from, making the use of VoIP for emergency calls less than ideal. To solve this problem, there is an emerging standard known as E911 that should one day satisfactorily address this issue.

There are also issues with VoIP sound quality and reliability. Just like any data sent over the Internet, it is sent through the network scrambled into packets. Email and other documents sent over the internet are easily reassembled at the other end for a seamless transmission. Due to the real-time nature of voice communication, this reassembly process becomes more of a problem with VoIP. In order to reduce the delay of the voice connection, some data packets may occasionally need to be dropped if they don’t arrive in time, resulting in short periods of silence in the voice stream.

The amount of dropped data depends on the distance and speed of the Internet connection. High traffic networks may experience more dropouts, especially at times of peak usage. One workaround that service providers can use is to create dedicated data paths for audio transmission.

Given the growth and increasing popularity of VoIP, it seems that all these disadvantages will be overcome in time. Now is the time that the major service providers are using their formidable resources to work through the VoIP bugs. It is expected that as soon as possible most of the kinks will be ironed out and VoIP should receive widespread consumer acceptance.

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