Chapter 14: Device management 
TruVision NVR 11 User Manual  125 
Option  Description 
2. 
  The administrator can set the authentication for accessing RTSP 
streams with this dropdown menu.  
This should be left at its default value unless otherwise instructed by 
the system administrator, as choosing the wrong value will negatively 
impact performance.  
This function is only available via the OSD. 
3. 
  ISAPI is an application programming interface used by the recorders 
to communicate with certain software platforms.   
It should be left at its default setting unless otherwise indicated by the 
system administrator. 
This function is only available via the OSD. 
4. 
  Hypertext Transfer Protocol (HTTP) is the protocol utilized for various 
communications to and from the recorder.  Disabling this feature 
effectively locks down all HTTP communications, making it 
inaccessible remotely over the network.   
It should be left a
t its default setting unless otherwise indicated by the 
system administrator. 
This function is only available via the OSD. 
5. 
  The administrator can set the method for authentication used by the 
web interface.   
This should be left at its default value unless otherwise instructed by 
the system administrator, as choosing the wrong value will negatively 
impact performance. 
This function is only available via the OSD.