UCM has no direct concept of DIDs. The DNIS pattern (commonly a DID) for an inbound call at a gateway is optionally transformed and then searched for within the gateway or trunk CSS. If a match is found, the call is directed to that destination.
If you purchase additional DIDs from a provider you just need to ensure that the gateway/trunk is properly configured and the number is reachable from the CSS of the gateway.
This assumes the gateway is configured to communicate with UCM for the call. If you have an H.323 or SIP gateway, you'll need to ensure that the dial peers are correct in addition to the UCM-side configuration.
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.