IOS will not send BYE immediately if PI is received which indicates IOS needs to listen to inband tones being sent by the telco. Audio cut through would be one way once the Disconnect is received. i.e. from Gateway to IP Phone. In such a case PSTN controls releasing the call. Telco would send a RELEASE message after 30 seconds which would result in call tear down and IOS will send BYE to SIP leg.
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.