Skype Downloads-What is Skype and How Does it Work?

Skype Downloads-What is Skype and How Does it Work?

Skype is the most popular way to make Internet phone calls for many users. This is VoIP, that is, a voice over Internet phone service that helps you make calls with your Internet connection. And what's so great about making calls over the Internet? Well, making calls with Skype is absolutely free!

A Voice over IP is something that helps users make a phone call through Skype platform for free. Once a connection is established between registered users, who can register for free, they can call each other for free on their Skype ID. The users can even dial or receive calls from an unregistered user. But, these calls are charged a fee according to the call made. You need a microphone along with some hardware equipment on your computer to make these calls.

How to Install Skype in Computer

You need to visit the Skype website and click on the tab Get Skype. Here, you will find options that say On your computer, On your mobile, At work and On your TV. You can select the option that suits your need, for example, On your computer. Then, download the Skype software and install it on your computer. Then, plug-in your microphone and you are ready to make calls.

How to Make Calls With Skype

You need to first check if the user you are calling is a Skype user or not. This is because calling between Skype users is absolutely free. In case of non-Skype users, you need to have sufficient balance to make calls. Then, you need to use the sound test (Echo) provided by Skype to make sure the voice quality is clear. Then, enter the country code by using the code facility of Skype. Then enter the call information and number in the format required. You need to press 'Enter' or 'Call me' and start the dialing process.

How Does Skype Work?

Skype uses VoIP, a novel technology related to the Internet. Normally, signals are sent via PSTN, either analog or digital. In case of VoIP, SIP is used to create data packets that are sent on the same network one uses for mailing and surfing. These data packets can carry more than the standard voice on a telephone. They can carry text messages, offer live video and stereo quality sound. VoIP also gives 'screen sharing' depending on the speed of the Internet connectivity. You can even use Skype conference calls for video conference calling with different clients.

When 'Skype phone' or similar hardware applications are installed on mobile or computer terminals at the receiver end, the whole process of making calls begins. The device must be able to send and receive data packets via an IPv4 network. The voice is captured and converted into an analog format. This format is captured by the microphone and converted into a digital format. This is then passed on to a compressor that minimizes the audio stream size and helps in transfer even with a slow Internet connection.

So, if you have a 24 hour broadband Internet connection, you will find VoIP as the cheapest way of communication. You can make free calls through computer to computer, Skype phones, and similar terminals. You will even receive a standard telephone number from Skype that can be dialed from any phone and redirected to your Skype enabled device.

Use Skype to Call Local and International Numbers

Skype is not only useful for Internet users, but also helps you connect with users of traditional landline phones. You need to use SkypeOut service offered by Skype to make calls to landline phones. This is a paid feature that uses a different protocol from the regular peer-to-peer connections. The fee you pay varies according to the country and locality of the Skype user.

When you get your Skype account configured properly, you can even receive calls when you are not online. A special feature is that Skype forwards all your calls to your cell phone or landline even if you are not connected. The 'Call Forwarding' feature is a paid subscription that uses Skype Credit.

An interesting feature you can try is Skype-To-Go number. You do not need any special software or download to use this feature. With this you can make low-cost international calls from you landline or mobile, that too, without signing into your Skype account!. You don't even need an Internet connection or data plan to make these calls. All you need to do is give the number you wish to call to Skype. Skype will convert this number into a new number with an area code of your choice. Save this number and use it to call the person abroad at the low-call rates offered by Skype.

You can even use Skype online number that is set up according to the country of your preference. This is a feature you will love. If you are a resident of United States, you can set up a local number for Australia through Skypeln. What's great about this feature is that any non-local, non-Skype user can call you anywhere in the world through their landline like it's a local call. This is possible through Skype service or call forwarding. This feature too is a paid service though.

Apple iPhone and iPods users can also be happy about use of Internet technology for making free calls. You need to download the Skype applications for iPhone or iPod touch. Then this will help you make and receive calls through Skype in a Wi-Fi area. A Skype account, Wi-Fi connection and an installed application on your device is all you need to make Skype calls. Skype is also available for Android, Symbian and other phones. So, Nokia or Android users too can avail all the benefits of free or low-cost calling from their Internet enabled phone.

SMS Using Skype

Just want to say a simple 'Hi' without making an international call? Then Skype is the way to send your message to your loved ones. All you need to do is send a text message over Skype. The SMS charges are very low and negligible when compared to your network charges.

I Can Use Skype For...

There are many features offered by Skype that will come handy especially when you want to save on your phone bill. You can use Skype-to-Skype calling for free. Landline phones and mobiles can be called at very low rates. You can even make conference calls and use Skype TO Go number. Video calling is a breeze and group video calling is fun. Instant messaging as well as SMSing is easy.

Skype helps making free calls between registered users and charges a fee for calls between non-Skype users. However, the call charges are peanuts compared to what you pay for international calls using 3G networks and traditional phone plans! You have the choice of 'pay-per-go' or 'monthly subscriptions' for using Skype. So now, you can make international calls as and when you like without having to shell out more than you can afford.

Visit to:http://voiptest12.blogspot.com/

Source:http://www.buzzle.com/articles/what-is-skype-and-how-does-it-work.html

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8 Factors for Evaluating a IP Phone System

8 Factors for Evaluating a IP Phone System

Shoretel's CEO, John Combs, presented a keynote address recently at IT Expo West, providing very relevant instruction to IT managers and business owners upgrading to a voice over IP (VOIP) phone system. He cited the MAC iPhone as an reference, to illustrate how quickly new technology can come to the fore in an industry. In the case of a VOIP business phone system, IP technology will soon dominate similarly over existing analog (TDM) systems. VOIP telephone systems can greatly increase user adaption rates, leading to improved productivity in a business.

An IP phone system allows the collaborative and reach aspects of unified messaging technology. The VOIP telephone system frequently includes features such as audio conferencing, unified messaging (voicemail to email), web collaboration, mobile integration (cell phones), presence (to locate employees quickly), instant messaging, video conferencing and business process integration (customer relationship management, sales, accounting, etc.).

What differentiates one vendor's small business phone systems from the next? Mr. Combs suggests a an exceptionally structured evaluation process when upgrading to office telephone systems with VOIP for business. He advises forming an evaluation team of key players and using 8 evaluation criteria for selecting new small business phone systems:

Usability. There must be an onsite demonstration using the actual hardware to be deployed. It is often advisable to have two or more vendor demonstrations side-by-side, or instead to deploy alternative prototypes at two different company locations and then swap systems and locations to see which one users preferred.

Reliability. What is the expected failure rate, based on actual deployed systems using Bellcore/Telecordia standards? Mr Combs pointed out that academic laboratory estimates are not sufficient for confidence in deploying a new system. In other words be very careful about deploying anything that is not field tested.

Availability. Make certain understand the effect of downtime on the business based on the planned configuration. How many points of failure are there in the vendor's configuration?

Scalability. Examine the anticipated cost should your organization double in size.

Architecture. What methodology was used to design the system? Was it built ground-up vs. piecemeal from a number of merged business entities?

Total Cost of Ownership. In many cases initial costs (hardware, network and implementation) come to only 20% of the aggregate system expenditure in the long term. Day-to-day costs (training, move/add/change, system management, network and utilities) can easily add up to 80% over the system lifetime. What is the case with the systems under consideration?

Vendor Financial Strength. Evaluate the vendor's balance sheet to get comfortable with the fact that they'll continue to be able to support your office telephone system.

Vendor References. Everyone on the team should contact their peers for information regarding the ip phone system vendors considered. Would they repurchase? Do they know of other references? How do actual costs compare to vendor estimates? Is the system a support nightmare? What about any "raving fans?"

When choosing to upgrade small business phone systems, most users choose a VOIP business phone system. The suggested evaluation criteria and especially the presence of "raving fans" for any VOIP business phone system are important to achieve all the benefits of VOIP for business.

Visit to: http://voiptest12.blogspot.com/

Source:http://www.articlesbase.com/technology-articles/phone-systems-for-small-business-8-factors-for-evaluating-a-ip-phone-system-1776723.html

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VoIP Service Performance Validation

VoIP Service Performance Validation

EXpert VoIP Test Tools is an EXFO platform-based software application that provides voice-over-IP (VoIP) performance validation for service turn up and troubleshooting in enterprise and service provider networks. Supported on the FTB-1 and FTB-200 platforms, the application generates a single VoIP call from an EXpert VoIP-enabled platform to another EXFO platform supporting the application or any IP phone. The test calls can either be “live” or use a predefined audio file for test traffic. EXpert VoIP supports several signaling technologies including SIP, SCCP, H.323 and H.248 to ensure compatibility with the majority of VoIP environments currently used in the industry.

EXpert VoIP boasts a highly configurable test interface to maximize control over the test parameters yet maintains a strong emphasis on usability. The intuitive user interface features EXFO’s latest generation framework that allows even the uninitiated user the ability to quickly set up and run tests. All tests support a uniform set of quality metrics that include opinion score (MOS), R-factor and a full range of real-time protocol (RTP) loss metrics, which combine with configurable thresholds to simplify service validation or accelerate troubleshooting.
Tests are executed between two EXpert VoIP-enabled platforms or to a VoIP endpoint (such as a SIP proxy server, soft phone or telephone, i.e., ATA). The platform that launches the test initiates a call, sets up a media channel, transmits media and reports statistics. Depending on the endpoint, it answers the call, transmits media and gathers statistics. Service tests can query the endpoint to determine availability or to set up a call.

Key Features

Intuitive user interface for rapid verification of voice quality of VoIP services
Configurable pass/fail thresholds for simplified testing
Supports a wide range of signaling protocols including SIP, SCCP, H.248/Megaco and H.323 to suit most applications
Includes a full range of RTP metrics to support troubleshooting
Supports MOS and R-factor quality metrics
Test configurations can be preconfigured and saved for quick repeatable testing
Detailed reports are available to help track and maintain a record of changes in the service
Available for FTB-1 and FTB-200 based applications
Common tool kit and test interface across all platforms
Product Highlights

RTP Network Test


The VoIP RTP Network test is the base test of the EXpert VoIP Test Tools application. This peer-to-peer test measures VoIP-related parameters by streaming RTP packets between two endpoints. All supported functionality for this test conforms to RFC 1889.
The RTP Network test simulates VoIP traffic by streaming RTP packets between a controller test set, which initiates the packet stream, and a responder endpoint that initiates its own stream to the controller test set.

Signaling Protocols

EXpert VoIP has been designed to support a wide variety of VoIP environments to ensure the maximum utility of the tools. As such the application can be configured to use some of the most frequently used VoIP call signaling protocols including SIP, SCCP, H.248/Megaco and H.323.
Voice Quality Metrics

The EXpert VoIP Test Tools base application includes a full set of voice quality metrics including MOS, R-factor and degradation factors based on codec, latency and packet loss to help pinpoint the source of any voice quality issues. EXFO’s voice quality measurement agent calculates R-factor (another standardized transmission quality rating) for a call based on the G.107 E-model extensions. These model extension factors such as packet loss burst to more accurately predict the subjective score a listener would assign that call. The R-factor is then converted to an EXFO MOS score. The EXpert VoIP tests report the raw R-factor and EXFO’s MOS voice quality results for conversational call quality.

The EXFO MOS algorithm used in the application is based on the ITU-T P.800 recommendation, which provides an objective measurement to subjective testing. EXFO has invested significant resources into developing and refining the EXFO MOS algorithm and it has been successfully benchmarked against leading commercially available algorithms.


Visit to: http://voiptest12.blogspot.com/


Source: http://www.exfo.com/en/Products/Field-Network-Testing/FTB-Ecosystem/Platforms/EXpert-VoIP-Test-Tools/


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Pros & Cons of Internet Phones

Pros & Cons of Internet Phones


In this current age, telephony is much easier and accessible, thanks to the Internet. An Internet phone is a phone that allows you to make calls directly on it through the use of the Internet. These Internet phones are also referred to as Broadband Phones or Voice Over Broadband.



Cost Effectiveness
Internet phones are cost-effective, since you can make phone calls directly at a consumer friendly price. You can send documents and picture messages directly through them at lower cost than mobile rates.

Flexibility
A VOIP (Voice Over Internet Protocol) is a transmission of technologies that allows you to deliver voice communications or multimedia messages through the Internet. With a VOIP account, you are given a converter that allows your phone number to be integrated directly into the service. You can then carry the converter and phone number anywhere and make unlimited calls while connected to high-speed Internet.

Transmission Flaws
In case of a power outage, the service of an Internet phone is rendered inaccessible. The instant disconnection to the internet causes this. Scrambled data is another transmission flaw, since the data packages that are being transmitted are sometimes dropped and sound signals are inaudible.


Visit to: http://voiptest12.blogspot.com/


Source: http://www.ehow.com/facts_7476237_pros-cons-internet-phones.html


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Free Phone Calls To South Africa

Free Phone Calls To South Africa

1 - South Africa to Phone Free:

I think we all know about the Capetown which the capital of South Africa. You know Capetown is one of the most beautiful city that i ever seen. You are thinking that whether i visited to Capetown or not. Then you are right i had visited to Capetown. I can't explain about that. Lets come to the topic. AS we know there so many people from different- different countries reside in South Africa. They may be your relative, friends or family member. Even my friends also reside there. So there is need of communication between him and you. So how, we can't afford the mobile or landline calls as it cost much more. So don't worry we have the option.

There are many options to make calls ... Pay only the cost of a provincial call for international calls (equivalent to a call between two different cities of the province) to South Africa that is the cheapest fares which is offered by Voip Service providers only, here are some solution to make Free phone calls to South Africa.

2 - Call South Africa By Internet

There are many free phone service for South Africa, you can install Skype's free calls from PC to PC. If you want to make calls from PC to phone, you will need to purchase SkypeOut credit and Skype to make calls at a very low price. The charge that cost about 2 cents to phone from any country to South Africa. You will need Internet access on a computer with a headset you can talk with relatives, visit the Skype website for more information.

3 - VoIP Operators in South Africa

The Voip providers of South Africa: Vonage you will need an account with them before you begin calling to South Africa, and they give you a special modem for use with any regular phone to make international calls to South Africa. Visit Vonage official site for more information.

4 - phone card to call South Africa

You can find them at any stores for a low cost price. For making Free Phone Calls to South Africa with you did not need to have pins and no hidden fees. To use a calling cards has long distance, you must dial the toll on the back of your phone card South Africa,then follow the instructions. The two best phone cards to call South Africa are as follows...

5 - Equipment for VoIP to Make phone Calls to South Africa

Select a device such as VoIP or Magic Jack ooma (like voip2all router) you pay once a year and offers unlimited free calls to South Africa. You can take it with you to make unlimited calls to Africa from South America and other parts of Africa. Visit ooma for more information. At present ooma is also allowing free and unlimited U.S. calling at very cheap rate.

6 - International calls from South Africa

Check the operator of your cell phone before going to South Africa to check whether your cell phone when going to operate in South Africa. But if you wants to move to South Africa it's better to do not call much because your mobile is very expensive. You can get prepaid SIM card, buy a Sim card but before buying the Sim card to see is the card will work well on your mobile phone, there are SIM card with economic costs to passengers. If you are tours in South Africa, you can call by Internet, from a cyber make free calls to other countries. Most Internet cafes in South Africa have VoIP services. You must use a headset and makeFree Phone Calls from South Africa to abroad via the Internet.

Visit to: http://voiptest12.blogspot.com/

Source: http://www.articlesnatch.com/Article/Free-Phone-Calls-To-South-Africa/1095285

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Advantages of Broadband Internet Access

The Internet has gained prominence in every computer user's life. Its applications are found in nearly every field, ranging from communication, information, entertainment, education to e-commerce. Easy and fast Internet access is the most important part of the Internet. Broadband Internet access or simply broadband, is the technology that makes faster Internet access possible. Dial-up Internet is the traditionally used Internet connectivity via telephone lines. Broadband Internet is preferable to the dial-up in many ways. Let us look at the advantages of broadband in contrast with the traditional dial-up.

Benefits of Broadband Internet

The speed is the highlighting factor of broadband Internet. It has a higher speed of data transmission. The data transmission speed of broadband is more than 200 Kbps (200,000 bps) while that of dial-up is 56 Kbps.

High quality Internet services require huge amount of data transmission. For e.g., VoIP (Voice over Internet Protocol), streaming or Internet games, etc. As the speed of broadband is higher, data can be transmitted much faster. This is not possible with a dial-up service. One of the broadband advantages is that because the speed is higher, you do not have to wait for connectivity or downloading.

As speed is the prominent feature of broadband, there is quicker loading of pages and also easier downloading of music and movies and other files. Chatting through web-cam or video conferencing in real time mode is possible due to the high speed broadband Internet access. There are no barriers if you wish to download e-mail attachments.

Another significant feature is that broadband does not make use of telephone lines like the dial-up access. Therefore, there is no blocking of the telephone lines and you can use the Internet and telephone simultaneously. This is not possible with the dial-up as it connects to the Internet via the telephone line.

Broadband is always 'on', therefore, you remain connected for 24/7. It means you can communicate and surf as soon as you switch on your computer. Also, there is no need to reconnect after logging off.

As the broadband has wired as well as wireless technology, it is useful for every user. The wireless technology is a boon to travelers as well as to laptop, palmtop and cell phone users.

Broadband service is billed according to its usage or plan, and not the time factor. The payment is also mostly on per a monthly basis, and according to schemes offered by various service providers. Hence, you do not have to keep a check on the usage time to prevent huge bills, as is the case while using a dial-up service.

The high speed transmission technologies of broadband internet include:

ADSL

SDSL

Wireless Broadband Internet Connection

Satellite Broadband Internet Connection

Cable Broadband Internet Connection

Fiber Optic Broadband Internet Connection

Broadband Internet access is used by all business organizations. It is also useful for homes with several computers. It is even helpful for those who work from home or freelance. Broadband makes it possible for various people to access the Internet using the same connection. Those who have used dial-up previously will immediately feel the difference between the two. Watching television, playing games, downloading and uploading information has become easier and also very feasible. Besides, communication has also become faster and more comfortable, thanks to broadband Internet.

Due to its greater advantages, broadband is already the most used service. It is also the future of telecommunication. It will keep on advancing according to the growing demands and needs of the users. It can be rightly said that broadband Internet access is a boon to the world of computers and Internet.

Visit to: http://voiptest12.blogspot.com/

Source: http://www.buzzle.com/articles/advantages-of-broadband-internet-access.html

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Finding Reliable VoIP Service Providers

Finding Reliable VoIP Service Providers

Hiring VoIP service providers will give your company telecommunication capabilities that you will not be able to obtain when you use traditional phone services. A standard VoIP service provider will give your company the ability to communicate with clients, employees, business partners and suppliers through the Internet. Despite using the Internet to facilitate calls, VoIP phone systems are also able to process calls transactions with traditional phone systems. Calls that are made from traditional phone systems will be converted into a format that is compatible with the Internet before it is transmitted to your VoIP phone system. Making a call to traditional phone system also goes the same process but only in reverse. This permits you to exchange communication data with all forms of phone systems, giving you more flexibility in business communication.

Given this advantage in business communication, it is easy to understand why several businesses are employing VoIP service providers. Obtaining of the aid of a VoIP service provider is also easy since you can use the Internet to browse through multiple service providers. However, not all VoIP phone service providers are created equal. There are those that supply the best services in telecommunication while there are also other service providers that fall short of your company's expectations. Landing the right VoIP service provider for your business will not only give your business an edge over your competition but also makes your investment worth all the money you spend in acquiring and maintaining its services. Here is a short list that will help you find a reliable VoIP service provider.

1.) Sound Quality – It is already a given fact that conversations done in VoIP communication systems are of better quality compared to phone discussions performed in traditional phone systems. Reliable VoIP service providers will enable you to experience phone conversations that are almost identical to talking in person. On the other hand, telephone discussions using an undependable VoIP service provider are usually marred by static noises in the background. Another symptom of a fly-by-night VoIP service provider is that there are interruptions that occur during phone conversations.

Using this information, the next step that you need to do is to test your selected VoIP service provider. One way of doing this is by asking for a few sample phone calls. Never commit to a VoIP service provider if you have not tested some phone calls as you may regret your initial choice.

2.) Call Conference Ability – VoIP service providers that present excellent call conference service is another indication that they are reliable. A VoIP service provider that you can depend on will enable you to conduct meetings on the phone without any delays. Those that are involved in your phone meeting are readily connected. Moreover, the line is always open in this telecommunication service given by a dependable VoIP service provider. There will be no instances that the line goes dead, eliminating the possibility of losing possible clients or transactions due to downtime.

3.) 24/7 Customer Service – This is one of the most important factors that reliable VoIP service providers must have. With 24/7 customer support, any problems or issues concerning your VoIP phone system will readily be attended to. A VoIP service provider that offers tech support and live chat options should be on the top of your list as these options indicate that they care for their customers.

Visit to: http://voiptest12.blogspot.com/


Source: http://www.articlesbase.com/voip-articles/finding-reliable-voip-service-providers-4464894.html


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Using a Voip Virtual Number Reduces Long-Distance Phone Bills

Using a Voip Virtual Number Reduces Long-Distance Phone Bills   

A VoIP virtual number is a perfect way for a business to establish a presence in areas out of state while giving customers a way to make contact without having to pay long distance charges. This is done by using VoIP technology which uses packet based switching

to route calls over a data network.

Today, most businesses use circuit based switching that sends calls out over the PSTN, or Public Switched Telephone Network. In this scenario, only one call can be placed at a time over the same line. Although reliable, this is an inefficient as well as expensive way to route

calls. Because only one call can occupy the same line at a time, cost is based on the distance the signal must travel and how long the call lasted. When you’re on a phone call, you are using resources that are not available to other calls while your conversation is in progress. The

longer the distance, the more resources are being used. This is why long distance calls are charged at a higher rate because the demand on available resources to route the call is greater.

In the case of packet based switching, the digital signal is converted to data packets and travels along the same line that the data is using. Because packet based switching allows more than one transmission to occupy the same pipe, costs are reduced. When you make a call

on the traditional PTSN, you are in effect “reserving” that length of wire for your exclusive use. Virtual VoIP numbers can reside virtually anywhere where calls are sent and received over a data network. When these calls are made, you are sharing the line with many other

packets of data which allows greater capacity for each trunk.

So how do you benefit from the use of a VoIP virtual number? If you have a fledgling company and you would like to expand into other markets that could potentially be profitable, you don’t have to hire an entire staff or set up a brick and mortar extension of the business. You

could have one employee who works from a home office with a number that is local to the area that they’re serving. In this way, local customers won’t have to dial long distances when inquiring about the goods and services that you provide. Additionally, when the employee is

returning calls to customers, they too will only be making local calls. Any calls to the main office can be done via VoIP over a company network.

This allows businesses to test the waters in areas where they might not be sure about the profitability of building an extension of the business. This gives any company wanting to expand a very low cost way to slowly break into other areas without a substantial investment up

front. This also minimizes potential losses where the market wasn’t as strong as previously thought and allows the business to withdraw their presence quickly and easily.

A VoIP virtual number can also benefit the average consumer. In today’s society, many families are spread out over wide areas with some of the members living on the other side of the country. This makes talking to family members costly so most of the time calls are limited to

once or twice a month. With VoIP technology, anyone can have a virtual phone number in any city. As an example, if someone has siblings in the state of Indiana, and they live in Utah, they can get a number that is based in the same area code as their siblings. This way, their

siblings can call them and only pay local charges. Additionally, they can call their siblings using the virtual VoIP number that is local to the city in Indiana and pay only local charges as well. In most cases, the monthly cost for the virtual VoIP number is much cheaper than paying

long distance charges for calls routed over the PTSN. Obviously, for those making a lot of long-distance calls VoIP technology keeps families in touch without the worry of large phone bills.

This can be done by using a device that converts an analog signal to digital packets so that it can be sent out over the network. Another option is to have an IP enabled phone where the phone itself converts the signal. The last option is to simply dial from one computer to

another. There are already companies using this method where users can logon and have either voice or video calls.

VoIP telephony is becoming increasingly popular due to its lower cost and versatility. By routing Phone Calls over a packet based switching architecture, telecommunications carriers can offer service at a reduced rate. With cost savings and portability, VoIP is becoming a

fixture in the telecommunications landscape. With further advancements, it is likely that VoIP will replace all current forms of communication forever changing the way people communicate with each other.

Visit to : http://voiptest12.blogspot.com/


Source:http://www.pc-calls.com/phone/voip-testing/


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VoIP - Voice over Internet Protocol

VoIP - Voice over Internet Protocol


Definition: VoIP is a technology that allows telephone calls to be made over computer networks like the Internet. VoIP converts analog voice signals into digital data packets and supports real-time, two-way transmission of conversations using Internet Protocol (IP).

VoIP calls can be made on the Internet using a VoIP service provider and standard computer audio systems. Alternatively, some service providers support VoIP through ordinary telephones that use special adapters to connect to a home computer network. Many VoIP implementations are based on the H.323 technology standard.

VoIP offers a substantial cost savings over traditional long distance telephone calls. The main disadvantage of VoIP is, like cell phones, a greater potential for dropped calls and generally lesser voice quality.

Also Known As: Voice over Internet Protocol (IP)
Common Misspellings: Voice over Internet Protocal
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Sourse: http://compnetworking.about.com/cs/voicefaxoverip/g/bldef_voip.htm


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VoIP's Drawbacks - Should They Be Holding You Back?

Though VoIP is a wonderful and convenient option for business phone systems in many respects, it does still have a few problems. Discussing the issues rather than the advantages may help you decide whether or not it's worth taking the plunge and committing your office to a VoIP phone system.

The main problem with VoIP is that it's dependent on more external resources to continue operating. There is no VoIP phone that will work without both the internet and electricity, while landline phones will continue operating as long as the phone line is fine (and you have a corded phone which does not need a power source). If your internet goes down, you are basically unable to continue business while waiting for it to be repaired. Similarly, electricity is required to power the servers and keep your phones live.

For many of us, though, this is a reality of life; work cannot continue without internet access any longer. We are too dependent on the internet for research and communication; many careers are completely internet and PC based. If you can't work without your email either, it isn't a huge risk to put your phone line over your internet as well. In that case, the savings are probably worth it. If your work is mainly offline, however, or you work in an area with unreliable broadband access, you may find that it makes more sense to stick with a traditional phone line.

Sound quality is also considered by many to be a disadvantage of VoIP services. Again, however, this is completely dependent upon your individual set-up. Those with slower broadband services or lower quality wire, which limits broadband speed, will always suffer with call quality more than those with the highest quality lines and the highest allowance internet packages. In both cases, however, VoIP is still a completely viable option; occasional echoing is not going to disrupt your phone calls enough to make them inoperable.

Another disadvantage is that each and every phone needs to have a computer or at least a server running for it to work. They must all be hooked up through Ethernet ports or through a PC which is accessing the internet. Individual requirements vary but if your office doesn't have a PC for each person who needs a phone, you may be forced to buy extra hardware. Again, most offices do have a PC for each and every person, so this should not be a problem in the modern office.

Lastly, a serious disadvantage of VoIP is that it has no emergency calling function. Simply put, your VoIP phone is not in the security network and cannot be relied upon to reach emergency numbers. Emergency responders will also be completely unable to determine your location from your phone number, which they can and will do in an emergency with a regular landline phone. It's essential that every office running on VoIP has one landline phone in case of emergencies.

While VoIP has a few drawbacks, it does provide exceptional cost savings and convenience for many potential users. Consider carefully whether these disadvantages seriously harm VoIP's distinct advantages for your company.

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Tag: VOIP drawbacks, what is the drawbacks of voips, why voip, voip progblems

Source: Ezine

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VoIP Disadvantages

Most of us are aware of the basics and underlying mechanisms of Voice Over Internet Protocol technology. For those who are not up-to-date with its details, VoIP is a system that integrates various communication protocols and transmission technologies to offer the facility of conducting voice calls and multimedia sessions using one's Internet connection. Also synonymously referred to as Internet telephony, IP telephony, Voice over Broadband (VoBB), broadband phone and broadband telephony, Voice Over IP is generally implemented through the media of any of these six protocols - IP Multimedia Subsystem (IPS), Session Initiation Protocol (SIP), Multimedia Gateway Control Protocol (MGCP), Session Description Protocol (SDP), H.323 and Real Time Transport Protocol (RTP).

Since the emergence of this coming-of-age communication and multimedia technology, everyone's been talking about the advantages of VoIP such as low operating cost, flexibility of operation, more multitasking options, versatile utility, etc. However, since every coin has two faces, VoIP disadvantages are as significant, if not more, as VoIP advantages! Let's take a detailed tour of the VoIP drawbacks to understand the areas where it falls short of its promised deliverables and what are the reasons behind such lacunae. Time to lift the cover off the ugly side of VoIP!

Disadvantages of VoIP

As far as the VoIP advantages are concerned, the following VoIP drawbacks, mostly owing to practical infrastructure scenarios and technical reasons, emerge as the biggest disadvantages of VoIP that sometimes outweigh the benefits promised by this technology. Let's look at each lacuna in detail.

Service Quality: Lack of a network based service mechanism is one of the biggest VoIP disadvantages as due to the absence of a network based service, chances of loss of data packets and distortion of data sequence are increased. Due to these reasons, VoIP services often fail to tackle issues of jitter and latency.

Dependency on Power: As opposed to conventional telephones whose lines are directly connected to the telephone company's phone lines, VoIP adapters are connected to modems and routers which function as long as they are powered by locally generated electricity. A power failure, thus, means that you cannot use the VoIP service to make a call and have to wait till power is restored. On the other hand, in case of conventional analog telephone services, no such local power source is necessary and communication can be established and continued despite power disruptions.

Challenge of Portability: One of the major VoIP drawbacks is that while VoIP works on the Least Cost Routing principle, calls made over VoIP often find it difficult to reach their destinations if such destinations happen to be numbers registered with conventional mobile carriers and service providers.

Difficulty in Calling Emergency Numbers: Internet protocols find it hard to pinpoint network users on the basis of geographical location. Due to this reason, emergency calls often get routed outside the convenient geographical reach rather than getting connected to the nearest call center. Sometimes, emergency calls may get directed to non-emergency phone lines of the concerned department and the time lost because of such an occurrence can be detrimental and endangering! Suppose you've been cut by broken glass and the wound is bleeding profusely since you've punctured a vein - wouldn't you prefer to contact the emergency and trauma center of the hospital directly rather than calling the billing department and waiting till your call gets routed to the appropriate department? And all this time, you'd be bleeding nonstop! Don't you think that's scary and dangerous?

Limited Faxing Capability: Sending fax over VoIP is not very effective as the voice codecs used by VoIP technology are not designed for, and conducive to, transmitting fax messages. These codecs are fashioned to be able to convert an analog human voice model into a digital format.

Difficulty in Calling 911: The emergency service was designed on the basis of PSTN network and was meant to be easily accessible by all telephones on the network. PSTN networks work geographically and any PSTN telephone connection would be registered under a local address. That way, even if a caller of 911 isn't able to speak to the operator for some reason, the operator can still locate the geographic location and local address based upon the PSTN telephone number from which the call was placed. Now, VoIP works on the basis of IP address rather than local address and the distribution of VoIP services is not based upon geographical location either. Therefore, it becomes difficult to trace the location of a call as a particular geographical location cannot be pulled out of the information an IP address provides as these two are, in no way, connected.

That precisely covers the major VoIP disadvantages and the reasons behind them. Some other challenges like IP and network security issues, PSTN integration and caller identification have been tackled to a certain extent and soon, these are expected to become non-issues. Hope the same happens to the other aforementioned concerns as well. Once the above mentioned drawbacks get corrected, VoIP would be the undisputed technology and service choice for voice communication and multimedia interactions!

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Tag: voip test, voip disadvantages,  Disadvantages of VoIP

Source: Buzzle.com By Ishani Chatterjee Shukla

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