CAP (Common Alerting Protocol)

The CAP (Common Alerting Protocol) is a general format for exchanging emergency alerts, primarily designed as an interoperability standard for use among warning systems and other emergency information systems.

CAP message

A notification using the Common Alerting Protocol. CAP is used within the ESInet to send alerts from automated systems to PSAPs, and is also used to communicate data between agencies without a call.

NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1

OASIS Common Alerting Protocol