Unified Communications Infrastructure

I'm looking to upgrade to vSphere 6.7. I want to check to see if CUCM 12.0(x) is compatible with the updated version of vSphere. Looking at the matrix compatibility link below, it does not show support for this combination. However, CUCM 11.5 and 12....

Hi,my presence/IM server shows wrong current UTC Time. (20:42 instead of 15:42)NTP is enabled and Publisher has correct UTC Time and timezone set. I did the following workaround: I set a "wrong" timezone (Etc/GMT+5) on the presence server.Now at leas...

I am hoping to verify the max number of registered/configured devices in CUCM. Please note that we are building MRA devices (CSF, BOT, TAB and TCT) for 7,000 users so technically we are looking at 28000 potential MRA devices plus 7500 physical device...

We have CUCM 11.5 to which we want to install new licenses, we already acquired the FLEX licenses from Cisco and it's my first setup. The process seemed easy just next and next but I reached a point where it's asking about Webex SIP URI info not sure...

I am using cucm 12.5 and trying to make calls using java.Need to know if there is way to add users to call manager using java program.Thanks in advance

We are planning to upgrade our Cisco UCM from 11.0 to 12.5. We do have a number of Voice Gateways whose IOS version is below the minimum on the Cisco compatibility matrix (https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/uc_system/unified/comm...

Hi Guys,Please help me to understand MRA call/media flow between 2 end points using different expressway cluster register using mra..Refer docs if any.. 

Good afternoon, all!I'm retiring a server that, among other things, is the SFTP target for my customer's UCM Disaster Recovery System. This is a Debian 10 server with ProFTPD as the SFTP server. I can access this using WinSCP as a client and use any ...