The value in this object refers to the customer accepted drop rate for voice connections when the bandwidth usage exceeds allowed value. The actual range of this object is 0.0001% - 1.00 % The unit is in percentage, since the default is 0.01 %, and since we cannot express such fractions in MIB , it is being multiplied by 10000 . However, when the underlying CAC module is notified of the change in this object, then the value has to be divided by a factor of 10000. Multiplication factor 10000 is picked as someone might be interested in a tolerance as low as 0.0001%. This object will be applicable in case of AAL2 SVCs where the user does not add a PVC and also this object will be applicable if the per PVC level object vismChanVADTolerance(defined in CISCO-VISM-CAC-MIB MIB) is configured to have a value of zero. Configuring this object will not have any affect when card level CAC is disabled (vismCacEnable).