Section 2(1)(hc) in Standards of Quality of Service of Basic Telephone Service (Wireline) and Cellular Mobile Telephone Service Regulations, 2009
(hc)[ "Drop Call Rate" or "DCR" means the percentage of voice calls which once having been established are interrupted prior to their normal completion; [Inserted by Notification No. F. No. 304-2/2016-QoS., dated 18.8.2017 (w.e.f. 20.3.2009).]