TRAI has proposed tightening the quality of service norms for tele-com companies. It has suggested reducing the level of call drop rates to 2 per 100 calls compared to the existing benchmark of 3 per 100 calls. It has also proposed monitoring the billing and metering credibility for prepaid subscribers in addition to post-paid ones. A suggestion has also been made to reduce the time period for refunds by operators from four weeks to one week. The regulator has further stated that it would start monitoring the congestion levels for fixed line operators in addition to mobile companies.