User manual

DS1093-039 77
15.5 VOICE TALK
The Bi-directional voice talk can be set up between back-end and front-end.
Click
icon which is next to the camera list to start voice talk, the icon will be indicated and changed to , click
this icon again to stop voice talk.
Note: the audio preview will closed automatically once voice talk has been set up.
15.6 VIDEO PARAMETERS SETTING
When in preview, you can adjust the video parameters such as Brightness, Contrast, etc. Shown as figure below:
Click icon to increase or to decrease the value, click to restore the parameters.
15.7 PTZ CONTROL
The PTZ control is available on the web server, make sure that the parameters are set properly before control PTZ
camera, the control is shown as below figure:
The eight arrow buttons are for the position control, click
to start ‘Auto Pan’ function which should be supported by
the protocol. Adjust on the slider
to adjust the speed of pan and tilt.