How to Rewire Sannce CCTV Home Security Camera?

The connection which attaches the camera to the LAN cable has corroded on one of my Sannce CCTV security cameras (SANNCE 4CH 1920x1080P SPOE Security System Home CCTV NVR Recorder). The LAN wire has the normal 8 wires (blue/blue & white, orange/orange & white, brown/brown & white and green/green &... show more The connection which attaches the camera to the LAN cable has corroded on one of my Sannce CCTV security cameras (SANNCE 4CH 1920x1080P SPOE Security System Home CCTV NVR Recorder). The LAN wire has the normal 8 wires (blue/blue & white, orange/orange & white, brown/brown & white and green/green & white) but the wire from the camera has 8 wires that are red, black, grey, blue, orange, orange and white, green and green and white. Can anyone advise how to correctly connect them up? Many thanks.
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