Summary

New capabilities in modern terminals and public communication networks, such as sharing multimedia, exchanging location and status information, and call transfer, could be used by emergency telecommunications service (ETS) users in cross-borders operations (i.e., between national networks). Supplement 68 to ITU-T Q-series Recommendations is a Technical Report (TR) that aims to identify how the use of such features by ETS users could be problematic because of limitations in the international interoperability of ETS, beyond technology-to-technology priority mapping.

The TR comprises:

–           An initial comprehensive list of ETS-related functional requirements and capabilities analysed in the Report.

–           Identification of resulting limitations of ETS interoperability:

•     Interfaces between ETS national implementations (ENIs) supporting the ETSs considered;

•     Interoperability problems foreseen due to current lack of support for such telecommunication services in ENIs with different technologies.

The description of limitations includes both a technical analysis of standardized interfaces and use cases to illustrate the involved operations.