wfFrSwSvcUsageUpdateInterval 1.3.6.1.4.1.18.3.5.9.6.5.39

This number specifies the interval (number of minutes) for the SVC Billing process to collect and update billing usage data in the wfFrSwUsage MIB. Note: When converted to seconds, this must be a multiple of wfFrSwUsageTimerInterval.