O2 has launched a new Joined Up communications service to provide businesses with a converged solution for mobile, fixed line, data and broadband services, along with equipment and professional consultancy. The company has signed a new five-year agreement with BT Wholesale to provide the fixed-line element of the service. It comes just a week after Vodafone also signed a five-year deal with BT and launched a converged fixed/mobile service. [Press release]