CCTV Camera Pros Geovision 8.2 Multicam Digital Surveillance System - Manual (Page 445)

Troubleshooting
431
WebCam
1. A message "can't connect to server" appeared when GV-System is connected.
¾ Check ports 4550 and 5550 are enabled in Firewall.
¾ Check whether ports 4550 and 5550 are occupied by other applications.
¾ Check NAT port mapping is correct.
¾ Check whether the dynamic IP address of GV-System is changed.
¾ Check Ethernet adapter (ADSL modem must use the PPP/SLIP device).
¾ Check whether Web server changes download timing. (Dynamic Lan IP =1 min,
Dynamic WAN IP = 5 min)
2. Unable to use the two-way audio feature.
¾ Check whether port 6550 is available.
¾ Check the client PC’s sound card driver.
¾ This feature requires DirectX 9.0 or later. Perform upgrade if necessary.
¾ This feature requires Internet Explorer 6.0 or later. Perform upgrade if necessary.
¾ Check GV-System’s audio signal by using the Camera / Audio Install function (See
Camera/Audio Install in Chapter 1).
3. Unable to run MPEG4 Encoder Viewer and WebCam RPB.
¾ The security level of your IE browser may prevent WebCam components from
downloading to your PC. Start IE browser and go to Tools, click Internet Options, click
Security and click Custom Level. In Active X controls and plug-ins options, select
Enable or Prompt, and then click OK. Log in to GV-System again and WebCam
components should be downloaded properly.