The General Manager of Telecom, Srikakulam, K.Neelayya and the Deputy General Manager DV.Ramana Murty on Wednesday speaking to press persons that BSNL had increased its revenue by 20 per cent. He said the telephone exchange at Rajam had been upgraded to ensure better service. Dynamic locking of '95’ and other facilities would be now available at the exchange. He also said one lakh ITC cards were sold in the last month alone.