Zoning Normalizer

The zoning normalizer determines a result by comparing two specified field values with a list of paired values listed in From and To fields.

Zoning normalizers can examine any data stored in a string or phone number MATRIXX Data Container (MDC) field. For example, a voice zoning normalizer could contain From and To prefixes for local and long distance call zones, where each result maps to an area code prefix pair for local or long distance calls. When a subscriber makes a phone call and the event is received, MATRIXX Charging Application matches the area code of the calling number and the area code of the called number with a From and To pair defined in the normalizer to determine whether the call is local or long distance. The normalizer uses the associated index for the matching pair.

The event is not distributed across multiple zones. For example, if a calling plan has different zones set up for local and long distance, when a subscriber makes a phone call, the zone containing the called number is used for the entire session. If it is a local number, it cannot switch to a long distance number during the session.

The beginning of each string value, from left to right, is used to find the matching normalized value. For example, a From or To value of 123 matches 123456, 123, or 123000, but does not match 124xxx.

For each matching pair of prefixes, the normalizer determines which prefix is longer and which is shorter and then selects the matching pair with the longest prefix. If two pairs have prefixes with the same longest length, then the pair with the longest shorter prefix is selected. If both pairs of prefixes have the same longest length, and the same shortest length (for example, the prefix pairs 123, 9 and 1, 987 both have a longest length of 3 and a shortest length of 1, and match field values 123, 987), then the first matching pair in the list is selected.