Is Internet Necessary To Deploy VoIP?


By Daniel Castro


Voice over internet protocol is also called IP telephony, Internet telephony or also broad band phone. VoIP internet telephony works in the same manner as data transfer on a network. Protocols that determine the aspects of connection and transfer of data are used to transfer data over the network. The protocol that is used to transfer voice over the IP network is called the Voice over IP or VoIP protocols. The network voice protocol was invented for the ARPANET in 1973. It was an experimental protocol that has now realized into the commercial protocol. VoIP Wireless Phone is the present realization of this experiment.

Intranets and VoIP
The Private branch exchanges were designed to automate the telephone communication systems. With the advent of microprocessors these were used in the PBX and hence it was easier to integrate VoIP as well. Integration of VoIP helped save money as the transmission in the form of IP packets was cheaper than a dedicated connection between two ends.

If you have an intranet and a PBX as well you could enable VoIP by connecting an IP gateway between your PBX and intranet. Thus routing calls through the data line and saving cash. Directing long distance calls and international calls via data lines is an effective way of cutting your bill on communication.

VoIP can be used internally as well over the intranet. The advantage with this is that you need not buy a separate PBX for voice communication. VoIP over the intranet data lines is more predictable as the network traffic and bandwidth is determined in advance. More sophisticated VoIP programs could be used for less data loss, full duplex, real time voice communication

Working of VoIP
Traditional telephony used analog signals. Digital technology made the process more efficient by converting analog signals to digital signals and then compressing them. This increases the speed of transmission and lowers the bandwidth requirement as well. VoIP Equipment uses the Sessions Initiation Protocol or H.323 for defining the communication between devices. H.323 is designed for video conferencing has a wider range of applications when compared to SIP. But SIP is more robust when it comes to voice transmission only.

VoIP Basics the handshaking signals that are shared between the two ends to establish a connection. In the traditional telephone system these were achieved using circuit switching methods. For connection to be established and provide you good voice quality you need a cable modem for your internet connection or a different type of telephone system. High speeds are essential to a voice connection. The connection between the two points is maintained as long as the conversation goes on. The IP packets are transferred between the two points using a real time protocol. Similar to the telephone system, VoIP providers charge you a flat rate according to minute.

Benefits
There are a few Advantages of VoIP that make people adopt this technology.

• Most operating system software now comes with VoIP ability. Application software that provide net based messaging and voice conferencing offer you the ability of a voice chat and even video conferencing. Therefore there is no need of purchasing additional equipment.

• VoIP is beneficial to those who have to make frequent overseas contact or have high call volumes as the cost per call is low when it is over the internet rather than over dedicated telephone lines.

• Large corporations that require collaboration with multiple people can utilize VoIP since the rate is the same for a single connection as well as a multiple connection.

Disadvantages
There are a few issues that prevent general acceptance of VoIP.

• There is a lack of transmission quality during periods of high network congestion. When the bandwidth is limited and network congestion occur IP packets are dropped. This results in poor voice quality and even loss of connection.

• If the network goes down then all means of communication both voice and data is cut off. This results in the reluctance to change over to VoIP

• Calls to emergency services are not yet provided by VoIP. The situation may change as this has been made mandatory by the government.

• There are no directory listings or yellow page listings for VoIP numbers.

What ever the bold promises VoIP offers if it does not deliver on the internet scene it still is an advantage on the intranet scene.


More Resources

Unable to open RSS Feed $XMLfilename with error HTTP ERROR: 404, exiting

More VOIP Information:

Related Articles

Bluetooth Computer Headsets - Enjoy Wireless Freedom
Wireless Computer HeadsetsTill recently, few options were available to people interested in using cordless headsets with their computers. Dedicated wireless Headsets are available, however they often cost upwards of $200 US putting them out of reach of the average user.
VoIP - What is the Problem?
In the beginning, when the Internet Protocol was first designed, no one was thinking about the possibilities of sending audio and video. Real time communication was not an issue.
Use your Computer to make Cheap Long-Distance Telephone Calls
What is 'VoIP'?Simply put, VoIP refers to the carriage of voice signals over the Internet. PC to Phone VoIP refers to using your 'Internet-connected' computer to make calls to conventional telephones around the world.
How Voip Can Mask The Size Of Your Business And Save You A Bundle
Have you heard the buzz about VOIP (Voice Over Internt Protocol)? Basically, it's like communicating over the phone without a phone. Instead you plug your microphone into your computer log on to a website and "boom" you're talking baby.
VoIP in the Home
VoIP is set to revolutionise home communications. With VoIP you can make telephone calls over your broadband connection for free! Well in some cases you can, in other cases you might need to pay a monthly subscription to a VoIP service provider.
Get a "Virtual Phone Number" - Eliminate Long Distance Charges with VoIP Phone Service
There's a revolution brewing in the telephone industry. But it's not the recent demise of AT&T or the failure of Worldcom.
Should You ,VoIP?
My friend in Florida, Samuel, called me last week and immediately I noticed a difference in the sound quality compared to our usual conversations. At first, I dismissed it, thinking he was calling me from his cell phone.
Why Over 90% of VoIP Services Are Vulnerable to Attack
John Ashcroft, Attorney General, in remarks at the High Technology Crime Investigation Association 2004 International Training Conference held on September 13, 2004 stated, "We have seen worms and viruses attack?disrupting basic services?And with the increased use of the Internet and especially peer-to-peer networking, we have seen malicious code spread more quickly and infect more personal computers than ever before. The cost of these worms, viruses, and denial-of-service attacks?reaches into the billions of dollars.
Is VoIP the "Next Big Thing" in Telecommunications?
VoIP or Voice Over Internet Protocol has been simmering for the past few years. This year the market has heated up.
Do You Text Chat (IM) Online?
IM (Instant Messaging) - man, we thought we had it made in the shade when we stumbled over this unique way to communicate! Outside of talking person-to-person on the phone, IM was the next best thing. Texting talk was endless and cost was nonexistent.
What Is VoIP and How Does It Work
IntroductionThe way we make phone calls is changing. In fact in many circumstances things have already changed.
Take Advantage of Internet Phone Calls (VOIP)
Voice Over IP (VOIP) is a relatively new technology. Voice Over IP allows people to leave behind the old and very traditional analogue phone networks and now adapt in favor of the very new and very progressive Internet-based calling system infrastructure.
Lower Videophone Prices Allow Individuals Accessibility
VoIP service providers are now offering videophone at the lowest price we've seen on the VoIP service market. The tremendous drop in prices will see more individuals and SMB's investing in this affordable futuristic way of communicating.
Voip - Voice Over IP and Business: Is It For You?
VoIP allows users to make phone calls using their high-speedInternet connection. This translates into free, or very lowcost long-distance calling.
Text To Speech - Its Simple
Looking for a natural voice speech engine? Curious about what software can read your e-mails. Here is the latest TTS (text-to-speach) news.
VOIP Questions and Answers
Voice over Internet Protocol, or VoIP, has grown in popularity recently and with that rise in popularity has come a number of common misconceptions and confusion. Global Value Conncet ( http://globalvalueconnect.
What Do You Know About VoIP?
What is VoIPVoIP is an acronym for voice over internet protocol, aka voice over ip phone. A VoIP, in essence, is a computer phone that allows you to make phone calls from your computer to anyone in the world, e.
Outstanding VoIP Voicemail Features Makes Getting VoIP Voicemail Extremely Convenient
There are many types of VoIP (Voice over Internet Protocol) protocols that are employed by the VoIP providers currently providing VoIP calling plans. Luckily for the consumers, the VoIP providers have listened to what functions the consumers want in their Voicemails.
Google Joins the Internet Phone Revolution
Its not so long ago that the idea of free phone calls over the Internet would have been thought an impossibility, but as any knowledgeable user will tell you they are now commonplace. Skype the pioneer and market leader has 51 million users and a great, easy to use software package that allows your computer to make Internet phone calls between subscribers.
The Dangers of Peer-to-Peer Systems
Peer-to-Peer (P2P) systems do not operate on secure lines, thus providing a conduit for hackers to enter a network or computer, access personal and confidential information, as well as deploy viruses or worms. Users of P2P systems are prime targets and/or launching points for malicious hacker attacks simply because it requires downloading and sharing electronic files or programs, not to mention usage on publicly open and interpretable industry standard protocols and industry standard codec.