Cisco 7821 has a blank screen as shown in attached file. What I have tested so far:1) Upgrade phone firmware to 10.3,11.5,11.7.12.52) Pull good working lcd from good unit to replace bad unit phone3) Ip Phone can register to CUCM 11.5 as normal None o...

Any recommendation for Cisco 3rd party product replacing UCCX? (no Genesis or Avaya) ?

Hi Customer is comparing Avaya Report to Cisco. They want to know weather Cisco CUIC can do Inbound to Outbound calls Ratio on CUIC report? Thanks

Hi All,We try to use Prime Collaboration Assurance to monitor CUCM cluster but we do not get any CPU usage or memory Usage from Callmanager. We have correct snmp string , and http user.Errors are in attached. Anyone has any idea? ThanksPaul 

Customer wants to deploy cisco IP Phone 7821  and 8851 altogether about 370 units. As being service provider, they don’t have dhcp service in the network. They want to have a way to provision static ip address to ip phone in bulk. They don’t want to ...