For UCCE/ICM here are the CTI guides:
i'm trying to implement a listener into the CTI Server.
I'm kind of lost as too how to achieve that.
I've seen the term GED-188 thrown around.
Are there existing CTI libraries that support this functionality?
All the information I can find that sort of support what I want to implement are for the no longer supported CTIOS.
Yes, you need to use the CTI Protocol (GED-188) to connect to the CTI Server. You can find the documentation from the link Gerry provided as well as here: https://developer.cisco.com/site/cti-protocol/overview/