The telecom industry has seen some real changes since the rise of the internet and widespread availability of broadband speed connections. One of the biggest changes is the number of people now using their internet service to make calls rather than the telephone. This technology is commonly referred to as VoIP (Voice over Internet Protocol). This form of making a call has been boosted by huge cost saving benefits, sometimes even being free. But it comes with its own issues, most noticeably call quality and connection issues. So for those who are thinking about using VoIP in the future, do the savings outway the quality?
How does VoIP work?
VoIP works but converting sound into data and sending it through the internet. The internet does not care what the data it carries represents. For instance, it makes no distinction between the data needed to read this web page and the data needed to carry a phone call. Data is simply data.
How does this affect things?
Now that you understand the way VoIP works you can appreciate that as the internet makes no guarantee about how quickly data is delivered, there are no guarantees that there won't be delays on the line.
The variable nature of the system explains what you may have already experienced in practice. Sometimes VoIP systems work well, sometimes they don't. It depends on the demand on the internet at that precise time.
It gets worse, here's why. VoIP services quite often use Transmission Control Protocol (TCP), a method of ensuring data is delivered reliably over the internet. The problem with using TCP is that it works by requesting that lost packets of data be retransmitted before data is presented to the receiver. This all takes time. With most data transfer, a short delay is preferable to receiving corrupted data.
Why VoIP calls are sometimes unclear and noisy
The problem with sending voice is that delays DO matter and matter a lot. It would be completely unacceptable to have to wait for a few seconds for your voice to be heard at the other end of the line. VoIP systems get around this problem by simply ignoring missing or corrupted data packets. When data is lost you experience it as 'pops' and noise or echoes on the line.
Traditional telephone (POTS) systems don't suffer from that problem.
Why this is particularly disruptive on audio conferences
When using VoIP for a one to one conversation between two parties you can put up with the odd noise on the line. However as soon as you get more than one or two callers on the line, the noise from each line is multiplied, becoming extremely disruptive.
Audio conferences held using traditional telephone systems do not suffer from this problem and therefore it's possible to hold crystal clear conferences with tens or even hundreds of participants.
Free Voip Phone Services
You may be asking yourself "what's the difference?" service providers usually offer lower rates than the traditional phone companies, particularly for long distance and international phone calls.
VOIP is works by transferring voice into digital data over the Internet. Because the data is smaller, VOIP users save on valuable bandwidth as well. If you have a high-speed internet connection in your home, then you can utilize . Purchasing some equipment, such as VoIP phone adapter may be needed.
The phone adapter allows you to use all your standard touch-tone telephones with the VOIP technology. You may also need to purchase a router. Your VoIP service provider usually supplies most of the hardware you will need.
VOIP systems can even integrate your telephone needs with your computer applications such as E-mail, Fax, Web Conferencing, and Video Phone needs. By combining all of these services into one basic application, you save money.
You can use your phone and access all of your other programs at the same time, allowing greater freedom and simpler way to use all of these different mechanisms.
Many VOIP users can take their phone adaptor with them, and use their telephone number anywhere they have access to an Internet connection. Therefore, allowing users tremendous flexibility. This means that you are able to take phone calls on your regular number, even if you're traveling overseas.
VOIP even offers services like call-waiting, caller ID, call transfer, and three-way dialing as part of their standard features. Most traditional phone companies will charge you additional fees for these additional features.
Quality of voice calls from VOIP phones are as good as and sometimes even better than using a regular telephone network, greatly increasing its appeal.
VOIP comes in two basic types: hardware-based services and software-based services. Hardware-based services uses a box between your broadband internet router and a regular touchtone phone, in software-based services, you will need a computer.
The software-based services handle call-processing duties on your internet-connected computer instead of on a separate dedicated box or phone, and most lack complete call-and-receive interconnects services to public phone networks.
Many software-based VOIP packages are free or very affordable. However, free calls are usually limited in making just PC-to-PC calls. In software-based packages, you usually have to buy "credits" to make calls from your computer to regular landlines or cell phones.
The hardware-based services usually offers higher voice quality, better reliability and more features, such as white-page listings and emergency number access. These systems allow you to plug a standard phone into a converter box, which in turn plugs in to your broadband modem or home router.
VOIP phone service appears, to the user, to operate very much like the traditional telephone networks.
VOIP phone services are not only limited to voice calls. Its services also have the ability to make or receive video calls. This service is one of the most appealing to people who are considering using the VoIP system.
Once set up, you can use your VOIP phone service to place or receive calls from anywhere in the world. One of the most attractive selling points of a VoIP phone service is the low cost of long distance and international calls, sometimes even free.
Owning a VOIP phone has some few drawbacks as well. You must, of course, have access to a high-speed internet connection such as the DSL, and if your internet connection is down, you lose your VoIP phone services until you get back online.
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