ZyXEL Communications IPC-4605N manual Settings page, or visit speedtest.net http//speedtest.net

Symptom	Possible Cause/Solution
	Network bandwidth is insufficient.
	Without sufficient bandwidth, video quality will deteriorate and image errors like
	pixilation or frame-drop may occur. When you view your camera remotely from
	the
	Internet, your camera needs sufficient upload bandwidth to transmit video stream
	and you need sufficient download bandwidth to download video stream at the
	remote location.
	To gain satisfactory video quality, ensure there is sufficient upload bandwidth
Part of the image becomes	available to your network camera by taking the following actions:
pixilated/Image artifacts
appear	1. Contact your Internet Service Provider (ISP) to confirm the upload/download
	speed limit of your service. If the bit rate of the video stream is set at 512Kbps
	or higher but your Internet service only provides a max. of 512Kbps for upload
	bandwidth, then try to lower the bit rate setting in [Setup] > [Video].
	2. Run a network speed diagnostics on WebVUer to determine the bandwidth
	level of the currently connected network. To do so, log in to your camera using
	WebVUer and go to [Setup] > [Network] > [Network Bandwidth]. When the
	speed
	diagnostics is done, the WebVUer will advise you of the appropriate setting.
	Consider the following actions to ensure sufficient download bandwidth at your
	remote viewing location:
	1. Contact your Internet Service Provider (ISP) to confirm the upload/download
	speed limit of your service. If the bit rate of the video stream is set at 3Mbps
	or higher but your Internet service only provides a max. of 2Mbps download
	bandwidth, then try to lower the bit rate setting in [Setup] > [Video].
	2. Upgrade to a Gigabit network switch. Regular 10/100 Mbps network switches
	cannot handle multiple megapixel streams.
	3. While you are viewing the network camera remotely, shutting down any other
	applications that are also consuming network bandwidth in the background.
Gray images are seen	Network quality is insufficient.
repeatedly	Seeing lots of gray images in live view mode indicates that many data packets
	which carry video data are dropped during the transmission. This might be caused
	by network congestion, wireless congestion, or the limited upload/download
	bandwidth of your network. To measure the upload/download capability of your
	network, you can use either the “Network Bandwidth” testing tool in the network
	settings page, or visit speedtest.net (http://speedtest.net/).
	When using wired connection:
	Test your bandwidth to determine whether this problem is the result of poor
	network quality. Alternatively, try connecting your camera to your viewing
	computer directly to see if there are any faulty devices on your network.
	When using wireless connection:
	Besides the possible network bandwidth issue, your wireless signal strength could
	also come into play. Low wireless signal strength can lead to the same problem.
	You can check your wireless signal strength in the camera’s network settings page.
	The wireless signal level seen in the network settings is measured in dBm. To gain
	the optimal wireless connection quality, a signal level greater than -60 dBm is
	recommended. When the signal level is too low, you may have to place your
	wireless Access Point in a different location, use a wireless repeater, or remove
	obstacles between the camera and the wireless AP.
Ghost image is seen	Network quality is too low.
	This is a common problem when the network’s quality is low or the video setting is
	too high. Lower your camera’s video bit rate and see if the problem continues.