LANDLINES are set to be installed in prisons in five provinces from May, according to the General Director of the Interior Ministry’s prison department Kuy Bunson. A Cambodian company called TPLC Holding intends to invest more than US$8 million in the project, working with a foreign firm. Prisoners, he said, would be able to buy phone cards in order to call family and friends. It is hoped it will cut down on the illicit use of mobile phones. Correction centres in Phnom Penh, Kampong Chhnang, Pursat, Battambang and Banteay Meanchey provinces are set to benefit.