If you are using the MGCP gateway, when the IP phone hangs up, after 15-20 seconds, you will get a busy tone on the FXS port. If you put in the command timeout call-disconnect 5 under the FXS voice port. The MGCP control port will not provide a busy tone until after 15-20 seconds after the IP phone hang up. If you change it to H323, the command will take effect.
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.