Dropping Cameras Strange Problem

I have put 4 cameras at a checkpoint all within 20 feet of poe switch they are hikvision domes and are 6 mp each. The issue is for no reason one or two randomly will drop of switch and i can see it loose connection on switch locally. i have disconnected the fiber to main recording site until i solve present problem. I have tried a different switch and changed rj45 connectors on cable...

* *** * *** *****,*** *** *** ****. *** * cameras **** ******* ***** ******* ******* ** ********** **** ****** and ******* **** **** *** ****** ** *******. *** ** a ***** ****** *** **** ***** **** *** ****** ******* and ******. * **** ***** * ****** ***** * *** faithfully *** **** ****,**** *******. * **** **** ** ***** 6mp **** ** ********* **** **** ** *****. ***** **** tech ****** *** **** ***** **** ***** **** **** ********** as * ***** ** **** ****** ******. * **** *** it ******** *** ** ***** *********.
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** ***** ** **** *** ** *** ****** **** ** work ************?

*** ***** ******* **** ** ****** ***** ******* ******* *** i **** * ********* *** *** ****** **** **** **** me *** ***** *** *** *** ***** *** **** * put ** ** * ********* ****** ** ****** ** **** connect .******* * ****'* *** *** **** ** ***** **** for.I **** **** *** * ** ***** ******* *** ***** from **** * **** ** **** ** *** ** *********** units **** **** ********** ******.

****, ****** **** * ***** ********. * ***** *** ** IP ********, *** **** **** *** **** *** * *** light.

***** *** ***** ***** ******* ********?

*** ***** *** **-***-**** *** ****.*** ***** *** *** **** is ***.********** *** ** ******** ,**'* *** ***.***.*.**-** .* ******* tonite *** ***** *** *** *** *** ** *** **** 3 ******* ******* ** ******* ***** ** ** ******** ** switch.I **** *** ******** ** *** * **** ** *** switch *********** *** *** **** *******.

**** ** *** ***** ** *** ******? *** **** *** power *** **** ** ******?

*** ****** ** **** *** ****** ****** ****** ***** ** all *******, ******* ******* ** ** ******* ************* **** ***** is ***** ***.

**** * ***** *** *** ** ** ** ********* ******* i **** **** *** ***** ***** ****** **** ** ******.* am ** ******* ** ******* ******** ***** ** **** ****** so **** ****** ********.* **** * ***** ******* ** *** switches *** * *** * *** ** ***********.* *** ***** to *** ***** ******* ** **** ***** *** * ** robbing ***** ** *** ****.* ***** * ***+ ***** ** it.

* ***** *** **** ********* **** ******* *** ******* ******* will *** ** ******** ***. *** *******, *******, ******* ***+. I *** ** ** *** **** **** *** *** *****. You ******** ** *** **** * ***+ ******. ***** **** and *** ***** ****** *** *** ******.

****** ** ******** ******* *****.* ***** **** **** ******** ******* didn't **** *** **** *********** *** **** ***.* ********* ******* and **** **** ** *** **** *** ** ****.******** ** was **** ***** **** *** ** ***** ** ***** ********* for *** *****.*** ******* ***** ******** ************ **** * ***** cameras **** *** ********.****** ***** * *** *********** ***** ** 24 *** ** *** ******* *** *** ****** **** ****.*** switch *** ** ***** *** ******'* ****** ***** ********** *******.********** i *** ***+ ******** ** *****.****** *** ****.