Mavi IP Phone Systems offers hundreds of features, including many exclusive and upgraded capabilities.Mavi Systems ensures a smooth transition through our structured implementation process. Around the clock monitoring. If you want, we can monitor your system 24x7x365. Strong, Stable and Experienced: Mavi Systems was established in 2005 and has consistently experienced steady, profitable growth. Our customer base is continuously expanding and we're adding more and more knowledgeable, committed professionals to our experienced team. As a privately held company, we're able to keep our eyes focused-not on shareholders-but on you, our customer.