Is 7800 and 8900 series IP phones supported by UC560?Thanks!Qin

We are implementing the integration of Nortel PBX with Cisco CUCM 8.6 using QSIG trunk.When Nortel phone calls Cisco phones, if Cisco phone doesn't answer, the call gets forwarded to voicemail (Unity Connection 8.6), then Nortel PBX generates an erro...

I have two sites conneted via a gatekeeper:Site A:CME router A with CUE module (also function as GK) Extensions: 2XXXVoicemail pilot: 2000Site B:CME router B with CUE moduleExtensions: 3XXXVoicemail pilot: 1000There are no problem of 4-digit dialing ...

I have just installed Cisco Presence server 8.5.1, CUCM 8.5.1 integrated with LDAP. I also have Cisco Unified Personal Communicator 8.5.3 installed on my laptop for testing. CUPC is also integrated with LDAP. I have followed the documents and finishe...