2.5.4 Get an Address Location


This use case, illustrated in the following diagram, describes the Location Information Web Service interface that is used by protocol clients to retrieve a civic address location. Locations are associated with network identifiers that allow varying degrees of detail. If the client network identifiers are updated, a new request is invoked to the Location Information Server. This section follows the behavior described in product behavior note.<16>

Steps for getting an address locationGet Location

Figure 4: Steps for getting an address location



  • The protocol client obtains the FQDN of the protocol server.


  1. The protocol client sends an HTTPS-SOAP GetLocations request to the protocol server, as described in [MS-E911WS]. The request includes network identifiers as an input for locations.

  2. The protocol server returns an HTTPS-SOAP GetLocations response, as described in [MS-E911WS].The locations description includes a list of civic addresses. If the list includes more than one address, then the protocol client selects one address, based on the user’s input.


  • The protocol client caches its location and uses it in services that depend on location, such as an emergency call.