The Sangoma Switchvox (previously Digium) E510 is a compact appliance with the computing power to fuel your business communications. Equipped with a quad-core processor, solid state drive, and all the advanced Unified Communications (UC) features of Switchvox, the E510 provides small businesses with a state-of-the-art communications system at an affordable price. The E510 supports up to 150 phones and 50 concurrent calls, allowing small businesses to achieve unparalleled scalability. As your business grows, you can depend on the E510 to grow with you.