EventNotificationAlert message with alarm/event information in XML format.
<EventNotificationAlert version="2.0" xmlns="http://www.isapi.org/ver20/XMLSchema">
<ipAddress><!--dep, xs:string, device IPv4 address--></ipAddress>
<ipv6Address><!--dep, xs:string, device IPv6 address--></ipv6Address>
<portNo><!--opt, xs:integer, device port number--></portNo>
<protocol><!--opt, xs:string, protocol type for uploading alarm/event information, "HTTP,HTTPS"--></protocol>
<macAddress><!--opt, xs:string, MAC address--></macAddress>
<channelID><!--dep, xs:string, device channel No., starts from 1--></channelID>
<dateTime><!--req, alarm/event triggered or occurred time, format: 2017-07-19T10:06:41+08:00--></dateTime>
<activePostCount><!--req, xs:integer, alarm/event frequency, starts from 1--></activePostCount>
<eventType><!--req, xs:string, alarm/event type, "peopleCounting, ANPR,..."--></eventType>
<eventState>
<!--req, xs:string, durative alarm/event status: "active"-valid, "inactive"-invalid, e.g., when a moving target is detected,
the alarm/event information will be uploaded continuously unit the status is set to "inactive"-->
</eventState>
<eventDescription><!--req, xs:string, alarm/event description--></eventDescription>
<...><!--opt, for different alarm/event types, the nodes are different, see the message examples in different applications--></...>
</EventNotificationAlert>