A.1 Definitions

26.2673GPPeCall data transferGeneral descriptionIn-band modem solutionRelease 17TS

Performance Requirements shall be met by an eCall candidate, otherwise it is excluded from the selection.

Note: The Performance Requirements include all service requirements.

Performance Objectives provide no hard limits, but allow ranking of candidates according to defined criteria.

Design Constraints provide upper limits (requirements and objectives), e.g. on algorithmic complexity.

Selection Checking of candidate solutions against the Performance Requirements and Design Constraints, and ranking of candidates based on Performance Objectives, after which the highest-ranked candidate is selected.

The eCall Protocol is the overall application-layer protocol between the IVS and PSAP. The selected candidate will provide data transport ("MODEM") for the eCall procedure. However, the application-layer of the eCall procedure is out of the scope.