Grandstream Networks GXV3651 Series User Manual page 32

GXV3651 IP Camera
Please double check whether the device has an audio input connected.
The GXV3504 has 4 audio input ports and one MIC IN port. The GXV3501 has a MIC IN
port for an audio input. The GXV3651 has a built-in microphone and one MIC IN port for
audio inputs.
9. What is DDNS? Is it important for IP surveillance product to have DDNS support?
DDNS is an acronym for Dynamic Domain Name Service. It is important to choose an IP
network camera that has DDNS support for dynamic IP addresses.
Chances are that the network has a dynamic IP address (which changes with every log on). A
DDNS service makes sure that the camera's IP address always matches up to the current
server address. DDNS also allows for a website to be linked to the IP camera that is
constantly updated with the correct information and has a reliable feed.
10. Why is Windows Media Player unable to play the recorded videos files?
The GXV3501/3601/3504 all use the H.264 video codec. Windows Media Player may lack
the proper H.264 decoder to play the recorded video. Please download the Microsoft
FFDShow H.264 decoder from http://sourceforge.net/projects/ffdshow-tryout/ and install it.
11. Alarm Triggered Events do not work in GSurf.
Please double check the Alarm Action on your GXV3501/ 3504/ 3601. Login to the web GUI
of the GXV3501/ 3504/ 3601, go to the Motion Detection or Alarm Events page, and make
sure option Upload to Alarm Center is checked.
12. It is recommended that you save your video files in different directories when
using GSurf and GS_NVR.
GSurf and GS_NVR are different programs that have the ability to delete recorded video files.
It is better to save video files in different directories when using GSurf and GS_NVR in the
event that they automatically delete files that you might want to keep.
13. How can I use a cell phone to watch the GXV3501/ 3504/ 3601 video stream?
You must set the video resolution to QCIF to watch the GXV3501/3504 /3601 video stream
from a cell phone. Make sure to set the bit rate to 64kbps to ensure the best video quality.
14. Why doesn't the IP address of the device reset when I click the "Restore" button on
the Maintenance page?
The GXV3501 /3504 /3601 could be installed in areas that are not easy to access. For
example, it could be installed on the roof of a building or the ceiling of an office. This makes
it difficult to reinstall the device, therefore the "Restore" function will not clear the IP address.
Press the RESET button on the device for at least 6 seconds until you hear a beep to perform
a factory reset of all parameters (including the IP address).
15. Why can't the live video stream be viewed using a mobile phone or GSurf after
Firmware 1.0.4.6 Page 32 of 35
Grandstream Networks, Inc. 09/2010