Bestline Communications L.P. has served the communications needs of Austin s and surrounding area s businesses for over 27 years. It offers a wide range of services, such as long distance and local telephone service, data and high-bandwidth Internet, Voice over Internet Protocol (VoIP) and SIP trunking. Based in Austin, Texas, the company also provides data connectivity, Ethernet, digital subscriber line (DSL) and cable modems to businesses. It also deals in the design, installation and servicing of phone systems. Bestline Communications L.P. is a certified business partner of Avaya Phone Systems.