The options are as follows:
While the command window is active, Tab or Space advances to the next menu item. To execute a command, press Return or Enter for the highlighted menu item, or enter the number corresponding to the item to be executed or enter the capitalized character in the menu item description.
In addition, this option accepts also the character 'n' as an argument to disable displaying debug messages on the full-screen display.
TERM
isdnmonitor -h localhost