Cut wire (#3) in Cat6 cable, can I make it work?

[Tony Clifton]

Hi camera enthusiasts and cable guys!

I'm setting up a new camera system ((Dahua 5231R-ZE + BI) in a new building and it's going very well. Love those Dahuas so far (which I discovered here)!

Except for that cable...with the 3rd wire (White/orange stripe in T568A) looking to be cut somewhere in the wall-ceiling-floor...

Changed both ends. Still no 3rd pin signal.
From what I can see, when plugged, the camera has power but no Data.

My question is: With a little creative crimping, can I make the Cam work (over POE switch)?
It would be very difficult to bring a new cable there...

Fingers crossed and thanks in advance!

 

[GCoco]

Try swapping another pair (blues or browns) for the oranges. Shouldn’t be a problem as long as it is not a long distance. POE uses a pair for each of the positive and negative, so you will still have a DC voltage connection.

 

[Tony Clifton]

Will try that! Many thanks!

 

[GCoco]

Let me know how things go

 

[fenderman]

Hi camera enthusiasts and cable guys!

I'm setting up a new camera system ((Dahua 5231R-ZE + BI) in a new building and it's going very well. Love those Dahuas so far (which I discovered here)!

Except for that cable...with the 3rd wire (White/orange stripe in T568A) looking to be cut somewhere in the wall-ceiling-floor...

Changed both ends. Still no 3rd pin signal.
From what I can see, when plugged, the camera has power but no Data.

My question is: With a little creative crimping, can I make the Cam work (over POE switch)?
It would be very difficult to bring a new cable there...

Fingers crossed and thanks in advance!

You cannot replace a broken wire with another random unused wire, they are twisted together to prevent crosstalk. This will cause lost packets and issues you will be chasing forever, blaming your equipment. It is difficult to break quality cable while running it. Ensure you are not using cheap junk like copper clad aluminium/CCA. If you are the cable must be replaced..
What you can do is feed 4578 to 1236 as shown here in the diagram https://www.amazon.com/Cable-Matters-Splitter-Ethernet-Share/dp/B01DJOE4PU

 

[bp2008]

PoE can work by sending power on the same pairs as the data. I actually use the exact devices Fenderman has linked to connect two cameras with one cable, both with POE power. Not 100% of PoE devices support this configuration, but I think most do. So in most cases you can make it work with just two pairs.

I should probably also note that significant (but not crippling) packet loss occurs with those two cameras as a result of using the cable for purposes it wasn't necessarily designed for.