The regulator had come out with a consultation paper on implementation model for BharatNet on November 17 and asked stakeholders to submit comments till December 7.
"The last date for furnishing the comments on the consultation paper on Implementation Model for BharatNet has been extended... Stakeholders are now requested to furnish their comments by December 16, 2015," Telecom Regulatory Authority of India (Trai) said in a statement.
The first model used to deploy the National Optical Fibre Network (NOFN), whch was renamed BharatNet.