Comcast, which launched its service more slowly than most of its cable rivals, posted a 73% jump in users. You can have as many lines you want and each additional line is billed at the same rate as a single line. Be aware that some services don't work during power outages and the service provider may not offer backup power. 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.

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Get more features, pay less and call overseas - Hawaii VOIP is really a no brainer

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. When you pick up the phone with Hawaii VOIP and dial a phone number the phone adapter (black box) converts your voice into data and sends the data through the Internet in a similar manner to an email message. The people you call do not need to have a computer to communicate with you. This exciting Hawaii VOIP technology allows you to take your phone number with you anywhere you travel. With Hawaii VOIP you will be able to transfer you old telephone number to your new service provider.

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Some estimates have suggested that worldwide revenue of this new technology will hit the $96 billion mark by 2011. This technology converts the voice signal from your telephone into a digital signal that travels over the Internet. Vonage remained the industry leader with 1.8 million subscriber lines as of 2006. VOIP, pronounced voyp is an acronym for Voice Over Internet Protocol.