I  am using a CUCM 8.6. I don't find " services" when I click on  "applications button" on the phones?

Can I configure 2 DNs on the same Button on IP Phone with CUCM like the overlay in CME ?

Can I deploy CUCM on a separate server and integrate it with the CCX which is come with the BE6000 ?

While I am using CUCM V.8.6(2a) DVD to install the CUC . I could not  find the option to choose The CUC product from the list that besupposed to include the followingProduct Deployment Selection( ) Cisco Unified Communication Manager( ) Cisco Unity C...