IIRC, Its supposed to be the central entity created by the govt. to lay Optical Fiber Cable all over the country connecting even the villages with OFC. There is info on it but in its & bits over the net.
Its been there from 2012 i think but only on paper so far i guess.
Except only from last month I am seeing the BBNL ofc being already laid down in the entire gurgaon district (not city) and yup even smallest villages getting ofc drops which i think dont even have bsnl broadband due to exchange being in farther villages.