Not sure what else you're looking for here - you can chain phone, tone pager, email and SMS notification devices to act as an escallation chain for unread messages of different types and urgencies - what other type of notification are you hoping for?
Have you looked at this feature, I think it offers great options to meet most escalation requirements;
Cascading Message Notification
Cascading message notification allows you to set up a series of notifications to a widening circle of recipients.
For example, to create a hierarchy of message notifications for your Technical Support department, set the first message notification to be sent immediately to the pager of the front-line technical support representative. The next notification can be sent after a delay of 15 minutes to the pager of the department manager. A third notification can be sent after a delay of 30 minutes to an employee in the Problem Resolution Group.
Notifications continue to cascade according to the options you selected until the message has been saved or deleted by a recipient.
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.