We have recently started testing an implementation of CUCM 6.1 and so far all appears to be working as planned.
The system consists of 2 Communication managers on different subnets each with a gateway in its own subnet one PRI and one BRI.
Our one remaining issue comes during destruction testing. Once we pull the Ethernet cable out of the Primary CM everything appears to re register with the backup CM fine. All inbound calls process as expected but it is impossible to make outbound calls. The system just plays a bussy tone.
The SIP trunks appear to be working ok, but the trunks via the MGCP gateways do not.
Re: Cisco Unified Communication Manager 6.1 Fail over
I have checked that on both gateways and I was missing, ccm-manager fallback-mgcp, but after adding this there is no change I am still getting the same busy tone. I have also confirmed with both the gateway and the backup CCM that the gateways have re registered with the backup CCM.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.