We have CM running 3.12. When certain users have their phones forwarded to their cells, their calls periodically get dropped before they can answer their cell. It's right at the end of the connection process. I checked CM logs and it appears that CM creates a conference call to the outside number and then joins them together. However, it appears to drop the outside leg right as it attempts to join the two calls. Note: calls directly placed to those outside cells work fine. Also, this is happening for multiple users.
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.