1 thing you can try
Add http listener data via PUT on
/ISAPI/Event/notification/httpHosts
Body
<?xml version="1.0" encoding="UTF-8" ?>
<HttpHostNotificationList version="2.0" xmlns="
">
<HttpHostNotification>
<id>1</id>
<url>/acs_events</url>
<protocolType>HTTP</protocolType>
<parameterFormatType>XML</parameterFormatType>
<addressingFormatType>ipaddress</addressingFormatType>
<ipAddress>192.168.2.107</ipAddress>
<portNo>5000</portNo>
<httpAuthenticationMethod>none</httpAuthenticationMethod>
<Extensions xmlns="urn:selfextension

siaext-ver10-xsd">
<intervalBetweenEvents>0</intervalBetweenEvents>
</Extensions>
</HttpHostNotification>
</HttpHostNotificationList>
I used this on acs devices, might aswell work on camera.