GBCS 16.2 / 0x8F20 / Message Patterns
Limited Duty Cycle Action Taken
WAN: YUse Case Specific Alert Structure
Generating Device
No specific device applicability
Select a generating device type above to see the alert delivery pattern.
Message Pattern
Success Examples
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Alert triggeredDevice (internal)
The device detects the condition and generates GBCS event/alert code 0x8F20.
2
DeviceAlertMessageDevice → DSP (WAN)
The device transmits a GBCSResponse/DeviceAlertMessage to the DSP via the WAN. Payload contains alert code, timestamp, and use-case specific data (Use Case Specific Alert Structure).
GBCS Device Alert — RTDS example (SME.A.NC) — DBCH06GBCS Hex
DD000000000000571100000000DF0903
0000000000000FA00800DB1234567890
A20890B3D51F3000000200020110230F
20000FA0000203128F20090C07DF0101
FF000000008000FF090800DB12345678
90A10021E29A9433031E85FA31DE42
View in GBCS Parser →—
Alert received and validatedDSP (internal)
DSP authenticates the GBCSResponse against the device certificate and validates the alert content.
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No DCC User deliveryDSP (internal)
This alert is not delivered to a DCC User. RTDS GBCS HEX is therefore sufficient for coverage; DUIS Response and MMC Parse examples are not required.