I met Micah Singer, CEO of VoIPLogic, from Williamstown, MA.
VoIPLogic , formerly VoIPRental, is a managed service company. They have services deployed in Europe, North America and Brazil. The concept is to allow MVNOs, VoIP service providers or ISPs get into the VoIP space with brand name services from NexTone, Sylantro and others without having to take on the operational costs, or the licensing burden directly.
This model involves paying for capacity, and then branding and running the customer-side of the service. They are an aggregator of VoIP services. According to Micah, their customers support both enterprise and consumers and although they have received some seed capital from a Venture Capitalist, the company has been bootstrapped.