|We frequently use Cat5e/Cat6 terminated in an A standard on a patch panel to jumper phone connections. |
It is smarter and simpler to run them separately because no matter what you do, at some point, your phone lines will have to connect to a BIX or whatever it is you're using for the phone connections. So it only makes sense to go directly there when you can.
When we terminate to a network Patch Panel here at work, it's generally because we've wired for VoIP in that area. We still have need for analog lines though for fax, and in some cases dialup, so those are jumpered from the patch panel to the BIX block. It's worth noting, we use a special BIX block in this case that has RJ-45 outputs connected to it. So you plug the jumper from PP to that port, and then punch the actual analog phone lines in the appropriate BIX block.
You didn't specify if this is in your home or in a work environment. That would be helpful to know.