(Telecompaper) Swiss operators Salt and Sunrise announced plans to partner on rolling out fibre broadband services. They will set up a joint venture company to manage the roll-out of the broadband network, called Swiss Open Fiber. The roll-out is expected to begin in the fourth quarter of this year. Swiss Open Fiber plans a total investment of up to CHF 3 billion over the next 5-7 years to reach 1.5 million households in areas of Switzerland not adequately supplied with broadband.