Hong Kong-listed set-top box manufacturer DVN (Holdings) has entered into a framework letter of intent with a Guangxi-based television operator as part of the mainland regulator's drive to migrate the region's cable network from analogue to digital. DVN will provide set-top boxes and technical support to Guangxi Broadcasting and Television Info-Network Company and 'participate' in the building of the operator's digital television platform, the company said yesterday. China's State Administration for Radio Film and Television designated Guangxi as the country's only provincial trial site in April, as part of efforts to shift viewers to digital television in time for the 2008 Olympics and cease analogue transmissions completely in 2015. Motorola-backed DVN said it would generate revenue from licensing fees and from the sales of set-top boxes to the region's estimated three million cable subscribers. It will also share in revenue from T-commerce, interactive games and TV SMS.