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Grandstream Networks, Inc. GXV3662_HD/FHD User Manual Page 47 of 48
Firmware Version 1.0.1.71 Last Updated: 03/2013
8. Why is audio missing from the recorded video when an alarm is triggered?
Please double check whether the device has an audio input connected. GXV3662_HD/FHD has a MIC IN
port for an audio input.
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 GXV-3662_FHD uses 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/ a
nd install it.
11. Alarm Triggered Events do not work in GSurf_Pro.
Please double check the Alarm Action on your GXV-3662_HD/FHD. Login to the web GUI of the
GXV3662_HD/FHD, go to the Motion Detection or Alarm Events page, and make sure option Upload to
Alarm Center is checked.
12. How can I use a cell phone to watch the GXV3662_HD/FHD video stream?
You must set the video resolution to QCIF to watch the GXV3662_HD/FHD video stream from a cell
phone. Make sure to set the bit rate to 64kbps to ensure the best video quality.
13. Why doesn’t the IP address of the device reset when I click the “Restore” button on the Maintenance
page?
The GXV3662_HD/FHD 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
Restor
e‖
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).
14. Why can’t the live video stream be viewed using a mobile phone or GSurf_Pro after changing the
HTTP Port of the device?
Make sure that the RTSP port of the device is set to 2000 plus the HTTP Port number. For example, if the
HTTP port is 88, then the RTSP port of the device that you configured on GSurf_Pro / mobile phone
should be 2088.
15. Some notes on using SD cards
1. The GXV3662 only supports FAT32 formatted SD cards
2. The GXV3662 supports SD and SDHC
3. It takes 10-15 seconds to read SDHC cards with large memory capacities. Please wait 15 seconds
to unplug the SD card after you plug them into the device.
4. If there are many files (ie. 1800 or more image batch files) on the SD card, it can take up to 5 minutes
to read them. Please do not refresh the web interface at this time as the GXV3662 will restart reading
the SD card. Grandstream is currently working on a fix for this issue.
47


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