Essay about Voice over Internet Protocol

When it comes to VoIP phone systems, the "Vo" part refers to voice over, and the IP part stands for having your phone calls routed over the Internet. Many business owners have opted for these phone systems because they are cheaper than having numerous and separate phones in the office. You do not have to use the network or telephone service to make phone calls, which lowers the overall cost. At the same time, there are advantages of using IP technology for telecommunication.

It was in the 20th century when people began using high-tech communication systems such as cell phones, telephones, online mailing and even video calling, which have become the most in demand technologies around the world. The many facets of communication today had reached an enormous distance connecting different people throughout the globe.

There will be lot of challenges posed to the existing regulatory frameworks and rules by the VoIP and thereby is considered a truly disruptive technology. VoIP must be regulated like the telecommunications industry. Thus, from legacy to VoIP there is more to consider with an enterprise WAN to support 4 locations.

We can define VoIP simply as “the transport of voice traffic using the Internet Protocol”. Stating “using the Internet Protocol” associates the usage of the Internet in the mind of many people. But the matter of fact is that Internet Telephony is only a portion of VoIP, and VoIP has a broader definition. Before jumping into the security factors of a voice over IP network, let's examine the rationale behind it. The traditional telephone network, known as POTS (plain old telephone service) or the PSTN (public switched telephone network), served us well for many years. Unfortunately, it was costly, managed by only a few companies and inefficient. Each voice call over POTS uses a unique connection, allotted 64K of bandwidth. We're all familiar with a T1 connection, which has 24 channels and 1.5M of bandwidth (64K *24). In reality, a quality voice call on one of these channels requires a fraction of the 64K granted to it by POTS. Moreover, a silent moment, or lapses in speech still consume the 64K. VoIP deployments capitalize on the inefficiency of this design. The analog voice signal is digitized, compressed, chunked into packets and sent over a data network. Advanced compression algorithms reduce the bandwidth necessary for a quality voice call to a fraction of the 64K required by POTS. The silence and background

Amazingly, changes around telephone technology have been more prevalent than to the changes in basic technology itself. Phones now have circuit boards and various electronics that take place of rotary dials, the microphone and receiver may be made of the same membrane-carbon-electromagnet assembly like they have been made for years, or they may create the variance in electric current some other way. But there is always a membrane which vibrates due to the sound of your voice and electric current varying because of it and the current may be converted to an FM radio signal before being broadcast to your phone but it is still the same variance that carries your voice. Before, the human voice couldn’t create enough power to make telephones practical, a call from only a few miles away would be impossible even with stronger magnets. In 1877, Thomas Edison designed a new designed and patented transmitter that could easily utilize the special property of carbon and a call with a much greater distance and

     The first company that comes to mind when we talk about VOIP is Vonage. Like phone companies, Vonage offers phone service. However, Vonage performs this service over your existing internet connection. They will give you any number from any state you wish and even give you fake numbers called virtual phone numbers for an extra five dollars a month. They offer all the same features as a regular phone service with some extras such as auto forwarding when your connection goes down. Vonage also offers a real nice voicemail system where you can setup voicemail to be sent to your email account or have your cell phone alerted when someone calls you and leaves a message. The one

In this paper I will go over the pros and cons of having a purely fixed line network vs. a purely cellular network. When making this decision there are several things to consider, the most important is what this network is going to be used for. I am going to first go over the fixed line network then follow up with the cellular network. At the end of this paper I will do a recommendation to a new company that wants to open up a Skype- style service as to whether they should use a fixed line or a cellular network.

VoIP phone systems have the full range of features you might expect from one of these systems. As a business, the highly desirable features include:

VoIP is vulnerable to attacks just like any other network protocol. Attacks against availability, attacks against confendentiality, attacks against integrity, and attacks against social contest. Attacks against avalabilty include such things as Denial of Service (DoS) attacks, Call Flooding, Malformed Messages, Spoofed Messages, Call Hijacking, and QoS Abuse (1312.2225). A DoS attack is just like it sounds, when an attacker is trying to deny a service or resource by flooding the resource with bogus request to overwhelm the resource or service. Call flooding is when the attacker is flooding a VoIP server, client or infrastructure with heavy traffic to bring down the system (1312.22225). A malformed message is when an attacker is creating malformed messages with the wrong syntax and sending it to the server or client to confuse the server or client (1312.22225). A spoofed message is when an attacker is inserting fake (spoofed) messages to a VoIP session to steal or interrupt the session (1312.222225). Call hijacking is when an attacker takes over some transactions between the VoIP endpoint and the network (1312.222225). QoS abuse when an attacker messes with the element that are negotiated between the VoIP endpoints

Although widely discussed in the industry, call center Internet telephony is in its infancy, lacks standards, and in sot currently embraced by consumers.

The history of voice communication technology begins in 1876 with the invention of Alexander Graham Bell’s telephone. In the 1890s, “law enforcement agencies begin tapping wires on early telephone networks”.[48] Remote voice communications “were carried almost exclusively by circuit-switched systems,” where telephone switches would

In 1877, construction of the first regular telephone line from Boston to Somerville, Massachusetts was completed. By the end of 1880, there were 47,900 telephones in the United States. Transcontinental service by overhead wires wasn’t until 1915. The convenience of having a telephone can help police, firefighters, and medical crews receive reports of accidents and fires faster and possibly save lives. Telephone styles have changed and more functions were added over the years from rotary dial phones to touch-tone buttons. By the 1970’s the first cordless telephone was introduced and today there are wireless cell phones that people can carry with them almost anywhere in the

Understanding how voice-over-IP (VoIP) will help the process in implementation and improvements in communications internally and also with any new potential vendors. (XO Communications, LLC (2011))

VoIP is a relatively new technology and so the benefits are just beginning to be realized. VoIP technology has the ability to completely change the telephone industry as we know it. Big changes are in store for the way we use telephones and this section will address some of the changes to expect. Obstacles still stand in the way of progression and there are problems that need to be addressed before this technology can take over.

• Internet telephone – provides a very low cost alternative to long-distance telephone calls using electronic voice delivery.