Help with Asterisk Setup on Cisco Network equipment

Hi there, I am a college student working on a Proof of concept networking project.

We have been given some equipment and have to implement a VoIP solution on our limited equipment.

At the center we have a DELL ESXI server which is our connection out into the world, then we have three machines that represent local, remote, and cloud.

My question is how to get Asterisk setup on cisco routers and switches. I am able to get a VM running Asterisknow but was wondering how I get the router to point to phones to it.

Sorry if this is a noobie question, but just trying to get a better grasp on something that isn’t just Cisco.

automagic homing and configuration typically lives in DHCP/Bootp options pointing to the SIP Server and/or TFTP.