LIDB Validation validation occurrences multiplied by the LIDB validation per occurrence rate. Total validation occurrences shall include all validations, whether or not the call is completed. Ameritech will accumulate operator occurrences, automated occurrences, and LIDB validation occurrences via its Operator Services Call Analysis System (“OSCAS”). XXXXX utilizes TOPS AMA recordings to produce monthly summaries of mechanized and manual call occurrences.