What can i do with a CCT?

I do remote monitoring currently but have hospital experience and have had my CRAT for like 6 years now, it's coming up on my time to renew again at the end of this year and i will be sitting for the CCT before december. is it worth it to keep both CRAT and CCT or just let my CRAT go? What can i do with a CCT that i cant do with just CRAT? i know CCT is more desirable when it comes to remote monitoring but just not sure what is best here