Name: Immediate Alert

Type: org.bluetooth.service.immediate_alertDownload / View

Assigned Number: 0x1802

Abstract:

This service exposes a control point to allow a peer device to cause the device to immediately alert.

Summary:

The Immediate Alert service is instantiated as a Primary Service. There is only one instance of the Immediate Alert service on a device. There is only one instance of the Alert Level characteristic in an Immediate Alert service. This alert continues until one of following conditions occurs: • An implementation specific timeout • User interaction on this device • A new alert level is written • The physical link is disconnected

Examples:

If the written alert level is “No Alert”, no alerting is done on this device.

If the written alert level is “Mild Alert”, the device alerts.

If the written alert level is “High Alert”, the device alerts in the strongest possible way.

Service Dependencies

This service has no dependencies on other GATT-based services

GATT Requirements

Sub-Procedure	Server Requirement
Write Without Response	Mandatory

Transport Dependencies

Transport	Supported
Classic	true
Low Energy	true

Error Codes

This service does not define any application error codes that are used in Attribute Protocol.

Service Characteristics

Overview	Properties	Security	Descriptors
Name: Alert Level Description: The Alert Level characteristic is a control point that allows a peer to command this device to alert to a given level. Type: org.bluetooth.characteristic.alert_level Requirement: Mandatory	Property Requirement Read Excluded Write Excluded WriteWithoutResponse Mandatory SignedWrite Excluded Notify Excluded Indicate Excluded WritableAuxiliaries Excluded Broadcast Excluded	None	None