Which term denotes the protocol that takes location information and a Service URN and returns a URL?

Which term denotes the protocol that takes location information and a Service URN and returns a URL?

• A. LoST Protocol
• B. PIF
• C. LIS
• D. PIDF-LO

Answer: (A)

LoST, the Location-to-Service Translation protocol, is designed to map a caller’s location and a requested service URN to the URL of the appropriate service endpoint. In practice, you send the location (such as coordinates or a civic address) along with a service URN that identifies the needed service, and the LoST server replies with a URL that points to the correct PSAP or emergency service resource. This mechanism enables routing to the correct regional endpoint based on where the caller is located and what service is requested. PIDF-LO encodes location information, but it doesn’t perform the translation to a URL. LIS and PIF relate to other public-safety concepts and do not provide this location-and-service-to-URL mapping function.

LoST, the Location-to-Service Translation protocol, is designed to map a caller’s location and a requested service URN to the URL of the appropriate service endpoint. In practice, you send the location (such as coordinates or a civic address) along with a service URN that identifies the needed service, and the LoST server replies with a URL that points to the correct PSAP or emergency service resource. This mechanism enables routing to the correct regional endpoint based on where the caller is located and what service is requested.

PIDF-LO encodes location information, but it doesn’t perform the translation to a URL. LIS and PIF relate to other public-safety concepts and do not provide this location-and-service-to-URL mapping function.