TELES AG Informationstechnologien provides communications solutions for carriers and business customers. It operates through the following business segments: Access Solutions, Carrier Solutions, and Enterprise Solutions. The Access Solutions segment provides applications for wired data transfer and fixed mobile convergence. The Carrier Solutions segment provides subscriber solutions, fixed network substitutes, wholesale trading platform, and interconnection and peering network solutions. The Enterprise Solutions segment provides business trunking solutions to network operators and telecommunications service providers to offer internet-based telephony services to business and end customers. The company was founded by Sigram Schindler in 1983 and is headquartered in Berlin, Germany.