Craig Crossman photo Craig Crossman
National Newspaper Computer Columnist

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DEVICES MAKE FREE TALKING MORE CLEAR

The big thing today in telephonic communications is Voice Over Internet Protocol or VoIP. The older "Switched" system that we all use is generally recognized to be eventually phased out for these newer methods of telecommunications.

Simply defined, VoIP uses the Internet to deliver voice over the same Internet connections that deliver the text, graphics and video to your web browser on your computer. Since all data can be converted into digital ones and zeros and then reconstructed into analog data we can see and hear, it was a natural to do the same thing for voice communications. That's exactly what VoIP does. Using a computer or a VoIP handset, your spoken words are first converted into digital data and then sent over the Internet using the same protocols that get your browser's information from point A to point B.

When it arrives, your digital voice data is converted back to the analog data that we hear.

At first, the process was quite primitive and was done using two computers running the VoIP software. The sound was scratchy at best and the links were tenuous. Today, the sound quality and connections are solid and in many cases are superior to the audio quality heard on ordinary telephones.

Recently I used a service called Skype to talk long distance. The voice on the other end was so clear that if I closed my eyes, it sounded like the person was standing in the room next to me.

Of course VoIP doesn't always sound that good and connections can become difficult. But these problems continue to become less intrusive. But let's get back to how you hear the calls. If you plan to use your computer to make those VoIP connections, the speakers and microphone in your computer may not be up to the job. Mvox makes two products that can make your VoIP a more pleasant one.

The miniVox MV100 ($39.99) is a high quality, portable speakerphone that connects to your computer or laptop via a USB connection. The device can fit in the palm of your hand but don't let its small size fool you. Most speaker phones are half duplex, meaning that it rapidly switches between talk and listen mode. You may not realize it since it happens so quickly but you really can only speak or listen. The MV100 is full duplex so that you can listen and speak at the same time.

The MV100 also has a DSP voice processor that helps to make the audio quality even more superior. One way it does that is by canceling out room echoes. My experience using the MV100 was a good one in that there were no interruptions and both parties could hear and speak to each other quite clearly.

The second offering is the MV900 ($159.99). This device is a bit larger and offers all of the abilities of the MV100. It also features speaker independent voice dialing. Without training, anyone can speak various commands like "dial" or individual numbers to which the unit will accurately respond. The device can also store 12 phone numbers with extensions that can be activated via a voice command. Built-in wireless communications let it work with any Bluetooth enabled cell phone. Using this wireless standard, the MV 900 need not be physically connected and is powered by a rechargeable lithium ion battery which yields 4 hours of continuous talk time or 200 hours of standby mode.

Both devices work on Windows and Macintosh and require no software drivers.

If you're considering VoIP for your home, office or portable applications, you should definitely check out these two offerings from miniVox.

www.mvox.com

 

Craig Crossman is a McClatchy-Tribune newspaper columnist writing about computers and technology. He also hosts the nation's longest running nationally syndicated radio talk show on computers and technology, Computer America, heard on both the Business TalkRadio Network® and the Lifestyle TalkRadio Network®, weeknights at 10PM Eastern time.  Visit his website at http://www.computeramerica.com

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