CCTV Camera Pros iDVR-PRO H Series DVRs - Manual (Page 114)

Web Viewer
114 |
Web Viewer
Audio Mapping
You can activate audio of a channel to communicate to
the remote user.
Click < > on the right side of each item to display
audio channels available to select.
Click to complete and apply audio setup.
\ \ About
Click the tab to check the model
name of the DVR as well as the web viewer version.