BrownChiLD

OK. but i have also another dilema 1. If we use a voltage tester on the PoE Splitter side , not a single volt of power is detected this is the case for both straight through and cross over crimping 2. if we connect the LAN cable direct to LAN port of camera , still no power (coz i assume the camera doesn't have BUILT IN poe support since it has connector cables for DC plug) see pic what are we doing wrong here?

I have an IP CAMERA (several different models) with both PoE Support and DC 12v connector. Using a regular 12v 2A DC Adapter directly connected to it works fine. I wanted to make use of the PoE Support but i dont have PoE Power Supply I do have 1. Passive PoE Injector Cables 2. regular 12v DC power adapters for CCTV equipment Connecting the PoE injector to the PoE Port of the device using a straight through UTP cable, DOESn'T WORK.

ok thanks. i think this pretty much answers my main question.. the cameras can only consume combined wattage max of what the switch can take in (72w) . therefore when deciding on a UPS for the system, i will calculate consumption of DVR and Switches only, no need to add a per camera wattage on top of that. tnx If you do this you will overbuy. Suppose the switch has 7 cameras attached and each is only drawing 4 watts...add say another 5 for the switch and you are at 33...why would you use 72w to compute your needs? Thanks for that.. but i figured it would be quicker, safer, and less hassle to calculate max load potential of each camera cluster based on max load of switch, rather than calculate or gauge exactly per camera requirements ... If i "overbuy" UPS power for, say, a 72w system, then it's ok because the excess UPS power will just go into more minutes of backup power for the system. So basically it's safer to just provide ups @ max potential load, specially if budget permits it. atleast that's my take on things.

ok thanks. i think this pretty much answers my main question.. the cameras can only consume combined wattage max of what the switch can take in (72w) . therefore when deciding on a UPS for the system, i will calculate consumption of DVR and Switches only, no need to add a per camera wattage on top of that. tnx

It will not be able to support 15.4w on all ports ..it will max out at 72w...this is how these switches are rated..it is rare to need 15.4 on each port.. Ok so when calculating for total watts consumption, i will just refer to max power of switch (72w) and no need to count the number of cameras on and each of the camera rated draw? Because the combined total wattage draw of all cameras attached on a PoE switch will never exceed the maximum wattage capability of the switch, correct? Regards

Yeh that's what confused me. It promises 15.4W power to each PoE device.. so if i have 8 devices maxing out 15.4w (for example) will this PoE switch able to handle it? and how much wattage will it consume in that case? 72W peak consumption? or the actual 123.2W needed to give max power to all poe devices attached? still confused/

Hi Guys I have a poE switch w/ peak power consumption @ 72w.. It claims to be able to provide 15.4w per port If i have cameras attached to all ports, consuming that much wattage, that's a total of 123.2W... so questions: 1) How the heck does that work? When Switch only consumes max 72w from the 220w wall, how can it provide 123w output power? 2) When calculating how much total wattage my surveillance system will consume, do i have to add the camera wattages? or just the PoE Switch total wattage? EG. My system has: 8 cameras rated at 5w each (40w total) 8port poe consuming 72w max. NVR, monitor, etc.. @ 200w. Total power consumption of the system is 312w?? regards

niec, ill check this out.. but the 70USD / cam is quote steep though

I see, yeh we can probably doo this.. Most cameras can handle well below freezing..the issue you may have is condensation forming...they have cameras with heaters built in..you dont want to mess around making your own.. yeh the condensation is the issues we're getting .. we DO want to mess w/ our own haha. we just need to understand the concept and then DIY power baby

Hi Guys What's a good PC based NVR / CMS software w/c supports onvif cameras including fisheye types ? (once w/ dewarping would be great) regards

Hi Guys, I know there are specialized cameras for freezers and cold storage deployments, but I was wondering if there was a way we can upgrade any standard CCTV/IP cameras to work well in below zero applications? Perhaps assemble a sort of heating plate and special casing with fan for the camera? What does the camera need to be freezer ready? Regards

Hi Guys So i'm into 360 degree fisheye cameras lately and there are 2 main types that i see everywhere: 1) FE camera with On-Board dewarping/split view (where if you connect via IE you can split views and dewarp the image) 2) FE camera without On-Board dewarping/Splitview (this streams full 360 image and relies on NVR to dewarp) While these are great, i'm looking for FE camera that can do ONBOARD SPLIT VIEW and STREAM EACH VIEWS independently like different channels .. this way i can setup a fisheye camera and use any NVR i choose like Blue Iris etc.. but so far the only camera i've found to be able to do this is Mobotix https://www.youtube.com/watch?v=tdbcr1vUdeo and this is really expensive.. and proprietary i think... I'm hoping some of you guys can give me alternative brand/models that can do what i need.. really hoping for some answers

hi Guys I'm looking into these CCTV POS integration solutions and realized they are so expensive , requiring null modems, etc to interface w/ serial ports and all. So i decided to have a different approach to better meet the budget capability of our local market (3rd world country baby! lol) I will be targeting POS software that can communicate via TCP/IP only. I will be requiring the POS Software developers to add a small code in their software to send transaction data (plain text) via HTTP POST to server on local network Server (this one i will develop) will then receive this data and store in mysql I pretty much got the above figured out and we're now testing this. My next problem now is to have a software/CMS that can stream/playback video from ipcams or storage and load my text from database according to timestamp. So my questions are: 1) Do you guys think this is a good idea/method? 2) Is there a CMS software that can do this already? Most solutions i've seen require you to buy the hardware etc. i just need the software really. 3) Any other pointers for me? Regards BC

Hi Guys One of the main reasons i switched from PC based NVR to Hardware is the P2P features of the NVRS. I dont know about you guys but in my country most internet connections for home/office are issued private IPs from ISP's router.. (we are not issued PUBLIC IPs and the ISPs do not accept port forward requests)... therefore there is no way you can do remote viewing. The only solution is CLOUD/P2P Now I am starting to hate the incoming bandwidth limitations on these hardware NVRs, and i feel that these limitations are money making strategies by the NVR companies. So I am now looking into switching my deployment back to PC NVR if only there is an option/support for P2P connections/handshakes in these software. I have also looked into "CLOUD" services but they cost money with subscriptions and stuff.. w/c im trying to avoid for my clients. If there was a way i can host my own p2p server just to handle the handshakes that would be great. Is there any such solution I'm looking for out there? Regards

@thewireguys ah this looks more convenient thanks @tomcctv when you say it will work w/ some hik/dahua , did you mean NVR/DVRs? Where paging is done through the NVR/DVRs? Regards