Make sure you're using IE, otherwise Unity Inbox will not show up. Last I checked, Unity Inbox was also a licensed feature that you needed to pay for, but that may have changed... Not too sure about the sales side of the fence.
Ok...let me correct my statement. Yes you do need a licence but want I want is to just hear the Voice mail from the web interface. So will the Allow Users to Use Unified Client to Access Voice do this also and not needing go through the licencing process in order to get the CUI?
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.