Born out of an MSP, BVOIP started by offering an all-inclusive program including phone system vendor management.  But what is differentiating them now is that they have taken a platform from multiple engines feeding it back into an integration piece such as Autotask or ConnectWise.  They have fine-tuned this for the MSP market and made it a flexible, profitable and reliable cloud-unified communications solution. Check them out at www.bvoip.com