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Network connection issue (2 devices each using 2 twisted pairs eg 4 pins)


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#1 Goudtik

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Posted 09 July 2016 - 06:25 AM

I need some help figuring out how to solve the problem below.....

I have 2 wired ip-camera's both assigned a static ip; 192.168.1.15 and 192.168.1.16. Each one is wired using only 4 pins 1,2,3 and 6 and connected (using only 1 utp cable) to a router. On the routerside the cable is connected to 2 ports (each using a connector with the pins 1.2.3 and 6 connected). Where is goes strange is as follows: only 1 camera works at a time; xxx.15 or xxx.16. When I check after a few hours the OTHER camera works and the first one is offline... This keeps happening! Very strange???

Btw I used a single cat6 cable because the camera's are used outdoor and there is no room for a switch or a second cable.

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#2 Wand3r3r

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Posted 09 July 2016 - 10:02 AM

Do you understand that by wiring the way you did both cameras are using the same wires?

 

You can't do that in networking.  Now if you had done 1,2,3 and 6 then 4,5,7 and 8 [unclear if that would work] then you would have two individual connections.



#3 Goudtik

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Posted 09 July 2016 - 11:22 AM

They don't use the same pins! Each connector is wired that the pins 1236 are connected)

#4 Wand3r3r

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Posted 09 July 2016 - 11:32 AM

So are you saying you used lines 1,2,3 and 6 for one connection end to end and 4,5,7 and 8 end to end for the other connection?

Or are you saying you used rj45 pinouts 1,2,3 and 6 for both?  so 4,5,7 and 8 are going to pins 1,2,3 and 6?

 

Only cable splitting I have seen is to run a 10/100 and telephones on the same cable.



#5 Goudtik

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Posted 09 July 2016 - 01:47 PM

Hi Wand3r3r, both the devices are each connected by 4 wires instead of 8. The only pins connected are 123 and 6 on both ends. Maybe my description is a bit unclear (sorry) but my guess is that this image would give an better idea of the current situation: 

http://lib.store.yahoo.net/lib/cablesonline/NETWORK13.JPG

 

Again the strange thing is that both devices work but not at once! 



#6 Wand3r3r

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Posted 09 July 2016 - 02:25 PM

did you wire it like so?

 

line1: network jack [1,2,3 and 6] <cable using lines 1,2,3 and 6> [1,2,3 and 6] network jack

line2: network jack [1,2,3 and 6] <cable using lines 4,5,7 and 8> [1,2,3 and 6] network jack






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