Section 2(1)(r) in Standards of Quality of Service of Basic Telephone Service (Wireline) and Cellular Mobile Telephone Service Regulations, 2009
(r)"Quality of Service" is the main indicator of the performance of a telecommunication network and of the degree to which such network conforms to the standards of such quality of service as specified in these regulations for specified parameters;(ra)[ "Radio Access Bearer" or "RAB" means a service provided by the Access Stratum to the Non-Access Stratum for the transfer of user data between the User Equipment and the Core Network; [Inserted by Notification No. F. No. 305-08/2012-QOS., dated 7.5.2012 (w.e.f. 20.3.2009).](rb)"Radio interface" means the interface between User Equipment and the Universal Terrestrial Radio Access Network access Point, which encompasses all the functionality required to maintain such interfaces;(rba)[ "Radio Link Timeout" or "RLT" means the Radio Link Timeout value broadcast by the GSM based radio access networks to initialize 'S' counter;](rc)"Radio Resource Control" or "RRC" means a sub layer of radio interface Layer 3 existing in the control plane which provides information transfer service to the Non-Access Stratum and is responsible for controlling the configuration of radio interface Layers 1 and 2;]