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Follow this manual: http://www.securitytec.co.uk/downloads/Hikvision%20Products/Hikvision%20Help%20Documents/Hikvision%20DDNS%20instructions.pdf It's an old one , but the procedure is same. Note: all necessary port must be forwarded : server port, HTTP and RTSP port.

Very possible you have some interference on signal lines. Try connecting one camera at the time, check all channels and all cameras.

Check protocols in camera and NVR setup. They both should be the same, ONVIF.

There are basically two ways to set network settings for DVR/NVR or IP camera for internet connection. 1. Set DDNS service or use static WAN address if available. Use static LAN address for DVR/NVR or IP camera Set router's port forwarding for all device's services. Avoid using port 80 for web service, move it to different port. PRO: All network services available both on LAN and internet connection. CON: Must reprogram the router after every router reset to factory default and of course if you change the router. If you change the ISP you may have to even change the DVR/NVR or camera's IP address. Different IP address for LAN or internet connection. 2. Use P2P (peer-to-peer) connection if supported by device. Set DHCP IP address option on the device. PRO: works plug'n'play, just connect it to any LAN port with internet connection. CON: some devices support limited functions on P2P connection. Usually slower connecting and longer delay.

Are IR LEDs on camera glowing in the dark while supplied by PoE? If so, everything is OK with PoE power supply Try connecting PC to Cantonk IP camera via router and set IP address to DHCP option. Then connect it to the NVR.

If your TV has PC/VGA input, you can use VGA to Cat5 adapters. You can try cheap passive adapters or more expensive active one.

Boogieman, like I said :"... for an average user". Technically speaking, you're right, but if you need only cameras, DVR, monitor and internet connection without extra features, then TVI/CVI/AHD systems give much higher value for money. Personally, I'm not a big fan of IP for small systems.

Unfortunately, third-party camera support is often not full-featured on many NVR's. You can get picture, basic setup, but no extra features. Vice versa, some cameras can work in ONVIF mode besides their own protocol, but also without all features. Only sure option is to have both camera and NVR of the same brand, but even then you must check the compatibility.

Use waterproof junction boxes or original additional junction boxes for outdoor cameras connection. Cat5 or Cat5e makes no difference, both are OK for LAN wiring up to 100 m.

1. Check power supply voltage on camera side, 50 m looks too long for 2 cameras on cat5 if you used it for power supply too. 2. Are cameras mounted on metal grounded surface? If so, isolate them from surface.

"Outbound" is sender's address and "inbound" is receiver's address (more than one are possible). Of course they can be the same, it's possible to email yourself and that's the situation you suggest, but I would rather make separate email account specially for this purpose so you can recognize message source more easily.

Ok, you've set outbound settings (sender address), but you miss inbound (receiver) address. Set this and test. I suggest not to use email notification for motion detection, it will pile up your inbox sending an email for every motion detected.

Both systems will get you FullHD quality picture (one with BNC connections is also 1080p), which is excellent for an average user. You can use Cat5 cables for both wirings , but if you are not skilled with electronics, get an IP system with PoE power supply. It's the simplest the possible connection.

Firmware is not installed on HDD, it's in flash memory. It looks that something shocked DVR and it lost its firmware. Some brands have solution for your situation using TFTP server, but I don't expect you'll find it for some unbranded Chinese DVR. There is no standard Linux for DVR, you must get the right firmware and procedure, if existed.

Buy an 4 or 8-ch NVR with PoE inputs. For compatibility reasons, best solution is to get both NVR and cameras from the same producer. Don't worry about the bandwidth, all NVRs and cameras have at least two streams: main stream (high resolution and bitrate) for recording and sub stream ( lower bitrate and resolution) for LAN/internet live view. If you install NVR (strongly suggested) , all recordings will be done through LAN connection and only remote internet viewing will be done via 4G. Nowadays, internet connections with NVR are usually made by P2P (cloud) connection, so you don't have to forward ports, set DDNS and so on.

Is he a manager or what? Why can't he get a user permission on his laptop to install the CMS? Next you can try: connect through web browser. Splitting video signals is a very complicated thing. If you just connect two DVR inputs in parallel to the same camera output, there will very probably be some interference. To get clear picture you must use video splitter amplifiers (1 IN - 2OUT) for every DVR input. If you have cat5 cable with video baluns, it's not Ethernet. It's just the same cable type , simply using twisted paired wires for signal transfer and that's all.

Toss, I suggest we both go our own ways and hope that chrissfour found what he needed. We should have led the discussion on Ohm's law directly, by email, but it's too late now. Sorry chrissfour, it's your topic after all.

Enlighten me !!!! LOL !!! Who do you think you are, Georg Simon Ohm himself ?

Own DVR with same camera feed? Why? Install CMS software on his PC and connect it to DVR.

Search the Web for Game, Trail & Hunting Camera. I think it's the simplest solution for you.

Check IP Cam Viewer by Robert Chou. It supports almost every device on the market.

I never used a cable like this, but it looks OK. Generally, you can connect an analog or HD PTZ camera in 3 ways: 1. RG59 coax cable with BNC connectors for signal separate power supply cable twisted pair cable (a pair from Cat5) for RS-485 communication 2. ready made video signal/supply cable with BNC and DC connectors twisted pair cable (a pair from Cat5) for RS-485 communication 3. full connection with only Cat5 or Cat6 cable: - video baluns on both sides (one pair from Cat5) - male/female DC jacks on both sides (two pairs) - one pair from Cat5 for RS-485

I suppose that the picture is not an original and that you composed it out of three pictures : DVR, cable with balun adapter and camera. This combination won't work, it shows NVR , Network Video Recorder with PoE inputs which works with IP cameras only and the camera on your picture is an analog or HD camera with BNC connection. Cat5 or Cat6 cable can be used for connecting both IP cameras and analog/HD cameras, but for the latter, video balun adapters must be used on both DVR and camera side. So,if you choose IP cameras with NVR (with PoE power supply) then LAN cables with RJ-45 connectors would be enough. If you choose HD cameras (TVI, CVI or AHD) then you can use the same wiring but with video balun adapters on both sides or coax / BNC with separate supply cable. PoE = Power over Ethernet , power supply over the Ethernet cable , can be passive (over spare cable pairs) or active (over data wires)

Which DVR, which CMS ?

Again: Ohm's Law is not valid in non-linear circuits the way you proposed. Camera can't be represented as same resistor for both 5V and 123V supply (100 mA at 5V would be 50 ohms and 100 mA at 12V would be 120 ohms). Theoretically speaking, camera's equivalent would be a current sink. Current draw is not proportionally dependent on supply voltage. Try measuring camera's current draw throughout full voltage supply range, it will just slightly change. Using the camera outside operational supply voltage is pointless. And, for the last time: voltage drop is the product of the cable resistance and the current draw and nothing else. My point was that the same current draw produces much bigger relative voltage drop on 5V than on 12V and the resultant camera's supply voltage goes out of the operational range more easily on 5V rather than on 12V supply. Conclusion: using the same wiring cross-section , maximum cable run is much shorter on 5V than on 12V supply.