Low cost, ultra speed BSNL combo FTTH broadband plan 300GB CS337 at 499 now comes live in Kolkata and West Bengal telecom circles with unlimited internet and calling as a promotional offer for 90days. This 300GB CS337 is the best postpaid combo FTTH broadband plan of BSNL provided through Local MSO/LCO operators & TIPs/RWAs/Builders to…