CONTENTS

 1     Scope
 2     Related Recommendations
 3     Abbreviations
 4     Grade of service parameters
        4.1     Post-selection delay
                  4.1.1     Authentication and privacy
                  4.1.2     Paging/alerting of a terminal/user
                  4.1.3     Routing number transfer
        4.2     Answer signal delay
        4.3     Call release delay
        4.4     Probability of end-to-end blocking
        4.5     Probability of unsuccessful land cellular handover
                  4.5.1     Definition of probability of unsuccessful land cellular handover
 5     Target values for GOS parameters – cellular systems
        5.1     Post-selection delay
                  5.1.1     Post-selection delay in the fixed network
                  5.1.2     Delay in authentication and cipher mode setting
                  5.1.3     Paging/alerting delay
                  5.1.4     Delay in obtaining routing number
                  5.1.5     Target values for post-selection delays
        5.2     Answer signal delay
        5.3     Call release delay
                  5.3.1     Target values for call release delay
        5.4     Probability of end-to-end blocking
                  5.4.1     Probability of blocking on the radio channels
                  5.4.2     Target values for blocking on the radio channels
                  5.4.3     Probability of blocking on PLMN-to-fixed network circuits
                  5.4.4     Target values for blocking on PLMN-to-fixed network circuits
        5.5     Probability of unsuccessful land cellular handover
                  5.5.1     Target values for probability of unsuccessful handover handling
 6     Target values for GOS parameters – non-cellular systems
 7     History
Bibliography
Annex A
Handover process
        A.1     Example of handover process
Annex B
Cellular systems
        B.1     Post-selection delay