Telefonaktiebolaget LM Ericsson (Ericsson) is a supplier of network equipment and related services to telecom operators. The Company offers a portfolio of telecommunication and data communication systems, multimedia solutions and professional services, covering a range of technologies. Ericsson operates in four segments: Networks, which involves communications infrastructure and related deployment services; Professional Services, which includes managed services, services for network systems integration, consulting and education and customer support services; Multimedia, which involves networked media and messaging, enterprise applications, revenue management, service delivery platforms (SDP) and mobile platforms, and Phones, includes the 50/50 joint venture with SONY Corporation, Sony Ericsson Mobile Communications. In May 2009, the Company acquired 100% of the shares of Bizitek, a Turkish systems integrator of business support systems.