UC version 184.108.40.206900-4
CUPS version 220.127.116.1100-7
CUPC version 7.1(1.13850)
IP Phone 9971 / Load sip9971.9-0-2
Under the "show server health" in CUPC for the Desk Phone it is showing "Partially Connected(Primary) - Cannot connect to phone"
The CUPC is able to reflect the presence status, meaning, if I'm talking on the phone the CUPC reflect the status that I'm on the phone also if I press DND either from CUPC or the IP Phones the status reflects successfully between them.
However, i'm not able to make a call from CUPC or when I receive a call CUPC dose not pop-up.
With the 99xx and 89xx phones you have to add this permission group to the end user: "Standard CTI Allow Control of Phones supporting Connected Xfer and conf". Of course after that is added exit CUPC and log back in to download the configuration again and it should show connected.