Avaya helps to tie the corporate world together. The company's communication equipment and software integrates voice and data services for customers including large corporations, government agencies, and small businesses. Avaya's office phone systems incorporate IP telephony, messaging, Web access, and interactive voice response. The company offers a wide array of consulting, integration, and managed services through its Avaya Global Services unit. It sells directly and through distributors, resellers, systems integrators, and telecom service providers. Avaya was acquired by Silver Lake Partners and TPG Capital for $8.2 billion in 2007.