LIS (Location Information Server)

LIS (Location Information Server) is a functional element that provides locations of endpoints. A LIS can provide Location-by-Reference, or Location-by-Value, and, if the latter, in geodetic or civic forms. A LIS can be queried by an endpoint for its own location, or by another entity for the location of an endpoint. In either case, the LIS receives a unique identifier that represents the endpoint, for example an IP address, circuit-ID, or Media Access Control (MAC) address, and returns the location (value or reference) associated with that identifier. The LIS is also the entity that provides the dereferencing service, exchanging a location reference for a location value.

LIS-ID (Location Information Server Identifier)

An identifier for the LIS in which the LO (Location Object) is stored.

NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1