Location information is crucial in the event of an emergency. NG112 architecture includes a Location Information Server (LIS) to manage this information. In view of this necessity, the Nemergent team has already made an open-source LIS available in our repository.
According to EENA NG112 Long-Term Definition, a LIS supplies the location of the users who call the emergency services. This location can be sent in the form of a PIDF-LO (location by value) or a location URI (location by reference). The LIS also provides a “dereference” service for a location URI. Other elements in the network can make use of this service to obtain the location value as a PIDF-LO. A LIS may be a database, or may be a protocol interworking function to an access network specific protocol. The following picture depicts the integration of the LIS node in the NG112 architecture.
The Nemergent LIS is built upon SIP/HTTP capable multi-purpose Kamailio server, which is in fact responsible for providing both interfaces and presence+location information. Kamailio builtin MySQL backend will be used for permanent data storage.
More information about the Nemergent NG112 LIS available here.
Please, visit our repository to access the source code of the NG112 LIS Server.
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