Virtual numbers are normally an additional cost but can start out at only $4.99 per month and they can only be used for incoming calls. US subscribers to Internet-based telephone services grew 21% to 6.9 million in the second quarter of 2006. This technology converts the voice signal from your telephone into a digital signal that travels over the Internet. Business plans will include a fax line with a fax telephone number..

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Get more features than a regular phone line (some offer 15 or more)

Vonage remained the industry leader with 1.8 million subscriber lines as of 2006. With onage.com you will be able to transfer you old telephone number to your new service provider. With normal internet protocols, you can have a network consisting of many routers (20 - 30 or more) which can result in a very high round trip time. VOIP, pronounced voyp is an acronym for Voice Over Internet Protocol. Most providers require you to have a custom telephone adapter that is pre-configured for their network so providing your own may not be an option.

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Be aware that some services don't work during power outages and the service provider may not offer backup power. Some estimates have suggested that worldwide revenue of this new technology will hit the $96 billion mark by 2011. This exciting onage.com technology allows you to take your phone number with you anywhere you travel. You can have as many lines you want and each additional line is billed at the same rate as a single line.

You may be able to use your service wherever you travel as long as you have a broadband Internet connection available. VOIP service cost anywhere from $9 per month for a block of 200 minutes to $44 per month or more for business feature with an included a fax line and custom ring features. You can dial overseas with onage.com and the rates are very competitive. A virtual phone is a piece of software that sits on your computer that acts like a regular phone.