Working on existing install of an outdoor IP camera connected to a PoE switch with a cable run of about 150 feet - the camera became intermittent, and then failed.
Troubleshooting steps - Removed the camera and connected to a test bed - the camera operates normally.
Did a cable test and appeared to have bad line 3. Reterminated cable & tested good (cheap tester)
PoE test - good.
Brand new and tested camera: connect, and it powers up, boots, and then flashes showing no network connectivity & switch lights do not show a data link.
Connect the camera directly at the switch with a 1-foot cable - camera works & connects to the server.
Connect a computer at the remote end, and have connectivity to the switch and the network video server (responds to ping)(.
So - it appears that the cable works for a connection without PoE, but when a PoE device connected drawing power - no data.
I also tested with a second known good PoE switch with same results - power supplied, but no data link can be established.
And, finally, after trying many things, verified that the camera will operate on a cable with just 2 pairs (pins 1,2, & 3,6) and with the idea that maybe one of the pairs has an issue, tried using the brown and blue pairs on 1,2 & 3,6 - but get same result - no data link.
Tried with different brand cameras.
What is going on?
Troubleshooting steps - Removed the camera and connected to a test bed - the camera operates normally.
Did a cable test and appeared to have bad line 3. Reterminated cable & tested good (cheap tester)
PoE test - good.
Brand new and tested camera: connect, and it powers up, boots, and then flashes showing no network connectivity & switch lights do not show a data link.
Connect the camera directly at the switch with a 1-foot cable - camera works & connects to the server.
Connect a computer at the remote end, and have connectivity to the switch and the network video server (responds to ping)(.
So - it appears that the cable works for a connection without PoE, but when a PoE device connected drawing power - no data.
I also tested with a second known good PoE switch with same results - power supplied, but no data link can be established.
And, finally, after trying many things, verified that the camera will operate on a cable with just 2 pairs (pins 1,2, & 3,6) and with the idea that maybe one of the pairs has an issue, tried using the brown and blue pairs on 1,2 & 3,6 - but get same result - no data link.
Tried with different brand cameras.
What is going on?