Location Validation Function (LVF) definition
Location Validation Function (LVF) means “[a] functional element in NG911 Core Services (NGCS) consisting of a server where civic location information is validated against the authoritative Geographic Information System (GIS) database information. A civic address is considered valid if it can be located within the database uniquely, is suitable to provide an accurate route for an emergency call, and is adequate and specific enough to direct responders to the right location.” 47 CFR § 9.28.