APPENDIX 2- MEASUREMENT METHODS Table 3: Measurement Methods of both Cellular Mobile (voice, 3G DataandSMSservices), and Fixed (voice service) Networks. Parameter Name Measurement Method MOBILE NETWORKS Voice Service Call Setup Success Rate (CSSR) Definition: The CSSR denotes the probability that the end-user can access the mobile telephony service when requested if it is offered by display of the network indicator on the user equipment. Equation: Where: Refer to ETSI TS 102 250-2 V2.2.1 (2011-04), Page 102-107 Note 1: Due to network problems and despite MTC being not busy (see preconditions for measurement), it may even be possible for the MOC to receive a busy or not reachable signal. In this case, since no ALERTING message will be sent, the test sample will be treated as a failure. Call Setup (CST) Time Definition: The call setup time describes the time period between sending of complete address information by the MOC and receipt of call set-up notification or an alerting message. Equation: Refer to ETSI TS 102 250-2 V2.2.1 (2011-04), Page 108. Note 2: This parameter is not calculated unless the telephony call setup attempt is successful. It is assumed that early traffic channel assignment is used. Call Drop (CDR) Rate Definition: The call drop rate denotes the probability that a successful established attempt is ended unintentionally by MOC or MTC party. Regulations for Quality of Service of Cellular Mobile and Fixed Networks Services (Voice ,SMS and 3G Data Services ) 11