How to integrate RC Phone Directory with Nice Incontact CXOne IVR for Dial by Name/Extension

I have RC MVP with Nice Incontact CXOne Contact Center. I have implemented the IVR within CXOne to route calls into my contact center ques. I want to allow customers to Dial By Name or Extension as a Menu Option. I cannot figure out how to integrate the RC Phone Directory and allow Dial By Name/Extension via MVP.