I am now integrating CUPS 7.0.2 to CUCM 126.96.36.19900-18, and CUCM is using its local user database and CUPS have a LDAP integration. Also, this setup does not use DNS.
I have installed CUPC and configured the IPPM phone service for the IP phone. Everything seems working fine, I can send the instant message and see the different presence status. However, if I reset the phone in CUCM admin page or by pressing **#** or disconnected the power. I found that in CUPC cannot detect the on/off hook phone presence. Besides, I have the same symptom on IPPM, IPPM cannot view the phone availability.
Is it normal or I have missed something?