One CAT6 Going To Location Of A Non Poe+ PTZ

What you need is a PoE injector and splitter that will convert the DC PoE or PoE+ power to 24VAC power.

Here's a few that might help:

Tycon Power Active PoE Splitters AC & DC Output, will go up to 70W at 24VAC. Here are a few online suppliers.

Here is a diagram of how it works:

The 24VAC splitter goes near the camera. The high PoE or PoE+ injector near the network switch.

Vivotek 24VAC PoE injector/Splitter, I cannot tell the wattage from the web page and can't find that unit on Vivotek's site.

These units are not weather-proof, they will need to be installed in appropriate junction boxes if mounted outdoors.

If you need to extend the POE or POE+ over CAT6 to longer distances consider Veracity PoE extender.