Ratio
attempts and the total number of PDP context activation attempts.
Equation:
ETSI TS 102 250-2 V2.2.1 (2011-04)
PDP Context
Activation Time
Definition:The PDP context activation time describes the time period needed for
activating the PDP context.
Equation:
Note 5: While determining the average PDP context activation time only successful
activation attempts are included in the calculations
ETSI TS 102 250-2 V2.2.1 (2011-04)
PDP Context Cutoff Ratio
Definition: The PDP context cut-off ratio denotes the probability that a PDP context is
deactivated without being initiated.
Equation:
Note 6: Precondition for measuring this parameter is that a PDP context was successfully
established first
ETSI TS 102 250-2 V2.2.1 (2011-04)
FIXED NETWORKS
Call
Setup
Success Rate
Definition: Call Setup success rate is defined as the ratio of successful calls to the total
number of call attempts in a specified time period.
(CSSR)
Equation:
Where:
Note 7: An unsuccessful call is a call attempt to a valid number, properly dialled following
dial tone, where neither called party busy tone, nor ringing tone, nor answer signal, is
recognized at the access of the calling user within 30 seconds from the instant when the last
Regulations for Quality of Service of Cellular Mobile and Fixed Networks Services (Voice, SMS and 3G Data)
14