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iCatch's analysis shows that AT&T has built some proxy or firewall for mobile network traffic using TCP port 80. If the traffic does not comply the HTTP specification, the proxy or firewall will drop or cancel link to port 80. This kind of measure is design for better QoS or security.
iCatch x11z series only implement the minimal set of HTTP protocol, and the link between iCatch x11z DVR and mobile device will be dropped by AT&T's firewall or proxy.
iCatch x13 series has implemented more complete HTTP protocol set and may not have problem on AT&T mobile network.
To avoid the link drop problem on AT&T network, please use port higher than 1024 to avoid proxy or firewall check.

Please do not use port 8088. This port is also used for HTTP proxy.

For more detailed,pease se the following manual:




The maximum capacity of HDD is 8TB, but if you would like to use 8TB HDD for you DVR, you have to verify the power consumption of power adaptor.


For android phone, you could go to google play store and download Socatch.

For iOS , you could go to App store and donwload the file Socatch.


For new DVR, if you don't install H.D.D or you forgot to format H.D.D, the DVR will keep beeping.

For the compatible H.D.D please go to download for detailed information.


CPU              Intel Core i7 4770above

OS                 Microsoft Windows 7、windows10 or above

                       (Compatible with 32/64 bit operation system)

RAM              8G or above   (Depends on the operation system)

VGA Card      8GB or above

Others           DirectX 9.0 above


Note 1:

Known VGA card that support DirectX9.0 currently:

NVIDIA: Geforce 500 series, Geforce 600 series, etc.

Or visit:http://en.wikipedia.org/wiki/Comparison_of_Nvidia_graphics_processing_units

ATI: Radeon HD6000 series, Radeon HD7000 series, etc

Or visit: http://en.wikipedia.org/wiki/Comparison_of_ATI_graphics_processing_units


We only support HUAWEI USB Modem so far because only they share the driver on the market. We have tested for E122, E153, E156G, E169U, E170, and E220, those models are working well with our DVR.


Refer to the manual "APPENDIX II"


1. 1 Mbps dvr upload, 2. supports windows xp/vista/windows 7 and mac os(RTSP)


Open port 554 and 8000 and forward them to dvr and install quicktime software in remote pc.


Only e-sata interface


Yes, but also need to do port forwarding in the router, switch hub, firewall, and virus protector.


At least 1Mbps for dvr upload and 6Mbps for remote download


Verify whether is one to one or one to four, if one to one, the remote id should sets to "0", if one to four, th remote id is "1".


No, hardware limitation


We do support the RAID mode and Disk Array system for E-SATA interface; but please noteice it, it still has the compatible issue.


It caused of the 3G signal strength not strong enough; when the signal strength is weak than the three bars of reception, it will become hard to connect.


This function will start operating 8 hours after it is set up.


Please connect the 3G USB Modem with DVR USB 1.1 port. In the 3G Internet Setting, the "Dial-up Number" and "APN" number has to ask for the ISP (Telecom) company, and the Pin number is the SIM card code. If users slot the 3G USB Modem before DVR start up, it will dial up automatically when DVR start up; if users slot the 3G USB Modem after DVR start up, it has to connect to internet manually, users could dial up after click "OK" button in Network Setting of Main Menu.

Our R&D will change the construction from RTSP to HTTP protocol for next version of GPhone application.

We do not support the USB HDD because the extension HDD box has different control chipset, some of it is working well, but some of it is not; therefore, we do not announce that the USB HDD will be supported. For this reason, we do not suggest user to use External USB HDD in our DVR, and not only that the HDD has the compatible issue potential. Otherwise, some of External USB HDD speed is too slow to might make the backup video lost. Too many uncertainty issues cause we do not know that how to support it; in PC base, it will be easy to support; but in standalone, all the driver has to save in the memory before, so that is the reason we are really hard to do it so far.

"1. When users use remote access to see the live view: images are loaded from cache memory in CIF format. Frame rate of the loaded file depends on the setting in ""HTTP Setup"" of local DVR and the requirement for network is around 1Mbps for DVR upload. 2. When users use remote access to see the recording video in playback: images are loaded from HDD of local DVR, so the transmission size depends on the recording resolution and frame rate. For example, if users set 720x480 with 30 FPS or 720x576 with 25 FPS to record, the result of recording size is huge and LAN is required to connect for playback. In general, the requirement for network is around 10 Mbps for DVR upload. When downloading files from remote access under unqualified Network Speed, a momentary loss of recorded audio signal may occur in order to maintain the images. Consequently, the downloaded files may contain without Audio signal. So if users want to view the playback file with smooth quality, could you please suggest your clients backing up the file to local PC and then playback it again when the Network Speed is unqualified."
Please notice it the documentation is just for consultation only, the real recording size is still depending the locality condition.

Audio file might be dropped in order to keep video transmission when the network bandwidth is not sufficient.