The following lists SIP Events and Web Services as defined in ETSI TS 103 479 and provides links to JSON schema files describing respective request and response bodies. You may refer to [EMTEL](http://www.emtel.etsi.org/) for further information.
The following lists SIP Events and Web Services as defined in [ETSI TS 103 479](https://portal.etsi.org/webapp/WorkProgram/Report_WorkItem.asp?WKI_ID=50130) and provides links to JSON schema files describing respective request and response bodies. You may refer to [EMTEL](http://www.emtel.etsi.org/) for further information.
## SIP Events
### QueueState
QueueState is an event that indicates to an upstream entity the state of a queue. For the message body JSON schema (MIME type application/vnd.emergency.queuestate+json) refer to [queuestate.json](https://forge.etsi.org/rep/emtel/ts-103-479/json-schema/blob/v1.1.1/queuestate.json)
