Telesphere is a nationwide Unified Communications as a Service provider for businesses. In 2003 Telesphere began providing highly secure cloud based voice and data services over a private IP MPLS network to mid and large enterprises throughout the United States and now also in Europe. Telesphere provides Hosted VoIP, Managed Video Bridging, MPLS Network Services, Private SIP Trunking, Mobile Integration and many other Cloud Communications services. Services are available regardless of the geographic location throughout out the United States. Telesphere was founded in 2000 and is backed and operated by investors who were affiliated with Cellular One/AT&T Wireless, Nextel, Nextlink, XO Communications, and Clearwire, drawing talent from telecom industry veterans with successful track records. In September 2009, Telesphere acquired the VoIP services business of Denver based IP services provider Unity Business Networks.