Dow Jones Newswires writes that Indonesian cellco PT XL Axiata plans to sell up to 8,500 transmission towers and shift its strategic focus to mobile internet data services. XL director Dian Siswarini is quoted as saying that three local groups have expressed interest in acquiring the towers. He added that Goldman Sachs is advising on the sale. The cellco currently owns around 10,000 towers which have been leased to other providers while it conducts their sale. Siswarini says the operator intends to invest USD1 billion next year, 60% of which will be ring-fenced to develop mobile data services.