I had to work on an IP camera that had the pigtail cut off. It is a Q-SEE (Hikvision) QCN8099B camera, and had a pigtail with an RJ45 jack built-in. However, the wire colors that the company used inside the camera were not the standard colors normally encountered in CAT6 cabling. And there were only 6 wires instead of 8, and the wires were very thin which meant I couldn’t punch them to a jack directly because they were too fragile.
I figured out that there were two pairs being used for communication, and one pair being used for POE.
I cut apart the remains of the jack which still had wires attached to it.
From this, I determined which colors went to which pins, and used a cross-reference to the T568B standard to figure out how to splice the wires to a CAT6 cable.
CAMERA T568B POE-B
1 BROWN ORN/WH
2 PURPLE ORN
3 ORANGE GRN/WH
4 YELLOW BLU DC+
5 (NONE) BLU/WH DC+
6 BLUE GRN
7 GRAY BRN/WH DC-
8 (NONE) BRN DC-
I taped the ends of the CAT6 cable and camera cable together to remove stress from the individual wires. I used 3M Scotchlok UY2 connectors to splice the wires of the CAT6 cable to the wires of the camera. (I didn’t get a picture of the splices)
Initially, I tried connecting the resulting cable to a POE switch to see if it would recognize the camera. But Q-See likes to keep things proprietary, so I drove back out to the location of the Q-See NVR and plugged the cable into the unit. After a minute or so the camera came up!
I found no pinout documentation online, nor any info about a default IP address for these cameras. It appears that they were made for use only with their own brand NVR. I’ve seen other blurbs that say “Just type in the IP address into a browser”, but that assumes I know if it has one, and what the address is.