More About VoIP!

A video might be able to explain better!

Reference

Hallock, J. (2004,November). A Brief History of VoIP: Document One – The Past http://www.joehallock.com/edu/pdfs/Hallock_J_VoIP_Past.pdf [Accessed on September 30, 2011]

Annotation: I choose this source because it has through explanations of the technology. This paper has sources to back up its own credibility.

Steinberg, J. (2008) Introduction to Computer Information Systems. Dubuque, Iowa: Kendall/Hunt publishing Company.

This is a credible source because it is the textbook we are using in class. It has all the information I need for this course.

Bobby White.  (2007, August 7). Business Technology: Small Firms Sign Up for Internet Calling; Start-Ups Offer VOIP That's Less Expensive And Easier to Manage. Wall Street Journal  (Eastern Edition), p. B.4.  Retrieved October 4, 2011, from ABI/INFORM Global. (Document ID: 1316085881).

This article comes from The Wall Street Journal, which is a magazine that’s has been around for a long time.

Toncar, V.. (2011, August). Simple best practices for VoIP. SC Magazine, 22(8), 17.  Retrieved October 4, 2011, from ProQuest Computing. (Document ID: 2429625221).

I used this article because it was one of the few sources that appeared in Proquest after a very detailed search. Proquest is a reliable source.

Unuth, N. (n.d.). Voice over IP. Retrieved from http://voip.about.com/ Retrieved on October 1, 2011.

This pile of articles was extremely helpful in breaking down the technical details of voice over IP. About.com has professionals who practice in that field write their articles.

Voice over Internet protocol/ telecommunications (n.d.). In Wikipedia. Retrieved September 31,2011 from http://en.wikipedia.org/wiki/Voice_over_Internet_Protocol

This site had a lot of information concerning the technology. Additionally, it lead me to other more reliable sources. It broke down the technical information and gave me a starting point for my research.

Gray, R. M. (2009). A History of Realtime Digital Speech on Packet Networks: Part II of Linear Predictive Coding and the Internet Protocol. Foundations & Trends in Signal Processing, 3(4), 203-303. doi:10.1561/2000000036

Timeline [Web log message]. Retrieved from http://www.net2phone.com/about/company/timeline.asp retrieved on October 4,2011

For the information used, this site is the most credible because it it’s the companies website so it is the most accurate.

McGann, S., & Sicker, D. (n.d.). An analysis of security threats and tools in sip-based voip systems. 01-05. Retrieved from http://spot.colorado.edu/~sicker/publications/analysis.pdf

Taylor, Paul. "Hard VoIP users top 100 million." Inquirer. 23 02 2010: n. page. Web. 4 Oct. 2011. <http://www.theinquirer.net/inquirer/news/1593216/hard-voip-users-100-million>.

Annotation: I choose this source because it has through explanations of the technology. This paper has sources to back up its own credibility.

Valdes, Robert, and Dave Roos.  "How VoIP Works” 09 May 2001.  HowStuffWorks.com. <http://communication.howstuffworks.com/ip-telephony.htm> 04 October 2011.

This article helped me get more information. It thoroughly explained the risk of security in VoIP.

Unknown. “How to: Encrypt Your VoIP” Aorilp 2006. VoIP Now.org http://www.voipnow.org/2007/04/how_to_encrypt_.html

This article is reliable because it is .org. This site is dedicated to keeping update date within all VoIP services.

VoIP

Introduction

Voice over Internet protocol, has changed the way we communicate. Skype, OOvOO, and Vonage are, a few companies who have increased the use of Voice over IP (VoIP). Voice over IP includes not only voice services but also video and text transmitted over the Internet. VoIP similarly known as Internet telephony is “the real-time transmission of voice signals using the Internet Protocol (IP) over the public Internet or a private data network” (Hallock, 2004, p.1). This means that people are able to video chat regardless of location. Because the data is transmitted over the Internet, and the Internet is worldwide, people can call as far as they please. Voice over Internet protocol technology is rapidly growing because of its many benefits and convenience. By learning its history we can explore the future of the technology and identify some issues that can be improved.

Background

Contrary to the saying “don’t reinvent the wheel”, VoIP essentially does that by merging three separate technologies: the telephone, Internet and TCP/IP. “TCP/IP is the most fundamental protocol, the basic communication language over the internet”(Steinberg, 2008, p.19).  There are three types VoIP currently available. First being ATA (analog telephone adaptor), which essentially works like an analog phone, just plug into socket where a phone goes and you’re ready to make IP calls. The next are IP phones, which connect right into the router (Valdes & Roos). Although they look just like normal phones, they use RJ-45 Ethernet cables instead of RJ-11 connectors (Valdes & Roos). Lastly, there is computer-to-computer, this method allows user t connect to multiple people at once- like –three-way calling on standard phones (only with more people). This category where Skype falls under, is the easiest and most inexpensive way to connect with a VoIP user. Software such as Vonage, which use stared telephone interface in computers, is also known as softphones.

IP moves packets from one server to another until the packet has reached its destination IP address. Voice uses a lower bandwidth than video, thus they can be transmitted on the same line, which reduced the cost of VoIP services. This method of VoIP has history that dates back to 1974, when MIT and Culler-Harrison Incorporated researchers successfully communicated through speech in real-time on the ARPAnet, the Advanced Research Projects Agency Network (Gray), which was “the world first operational packet switching network (Steinberg). Being ARPAnet “the predecessor to the internet”, (Steinberg) Internet protocol did not exist then. It wasn’t until the 1990s that the phrase “VoIP” was coined. In 1989 two Israeli men, Alon Cohen and Lior Haramaty founded VocalTech Communications, a telecom equipment provider. These men in February 1995 invented the Audio Transceiver also known as the “internet phone”. This program allowed people with the same type of network and software to communicate via the Internet for free. Then in September of 1997, Net2Phone releases phone-to-phone, and later PC-to-phone become available (Hallock). This way, the same exact software was not needed to communicate. As this technology grows, the US congress begins to make laws concerning it. In 1997 the FCC files a report on the use of Internet telephony. (Unknown) From here VoIP begins to rapidly increase. In 2001 Vonage is founded. Vonage becomes the first commercialized “phone over broadband”. Soon there after, Skype emerges; Apple and Google also open their own VoIP services.

Google Chrome: Advantages and Disadvantages

Chrome is an Internet browser by Google. It can be downloaded from https://google.com/chrom. Advantages and disadvantages of the browser are listed below. Please comment based on your experience with Chrome.

Advantages of Google Chrome:

• Fats Web page downloading
• MultiThreading approach
• own task manager - tell much memory needed and CPU and network updates
• dynamic tabs
• safe browsing- warns user when they attempt to visit harmful sites

Disadvantages of Google Chrome:

• No add-ons
• No RSS feed \s feature
• privacy
• No status bar
• having to type all of this out.