Magicjack is a device that allows users to make phone calls for a marginal cost starting at about $20 a year -- a five-year plan runs about $60, as of 2010.

Features

MagicJack phone service uses a type of technology called "Voice Over Internet Protocol" or Voip. It is a telephone service that essentially uses electrical signals to let people talk on a local area or wireless network.

Function

The Tiger 560c chip is the main reason the MagicJack phone service works at all. It is housed inside the Voip adapter with integrate circuits called "codecs."

Codec/Compression

For a computer to run properly, it has to delve out memory for certain functions. Audio codecs help compress files for memory usage. In addition to integrating circuits, MagicJack uses a form of audio streaming to send voices over the Internet.