Dropping a Dialed Connection to a Display

If you (the virtual machine operator) need to drop the dialed connection to the temporary display (for example, if the user no longer needs the display), enter: 
reset vdev
Where vdev is the virtual device number of the display.

If the user no longer needs access to your operating system and wants to drop the dialed display, the user may do so by resetting the TEST/NORMAL switch on the terminal. Press the switch to the TEST position and then back to the NORMAL position. Users who have terminals without a TEST/NORMAL switch must use the POWER OFF/POWER ON switch. Press the switch to the POWER OFF position and then back to the POWER ON position. If the operating system you are running is z/VM® and the dialed display is not logged on, the UNDIAL command can be issued from the dialed display to drop the connection. For more information on the UNDIAL command, see z/VM: CP Commands and Utilities Reference.

When the dialed connection is dropped, a message is sent to the user. Following the DROP response, the user is prompted with one of the following messages, depending on the type of terminal being used:
Type of Terminal
Message
3270
Press ENTER or CLEAR key to continue
SNA/CCS 3270
Press ENTER key to continue
When the appropriate key is pressed, the logo appears on the screen.
Note:
  1. For terminals not listed above, control automatically returns to CP, and the z/VM online message is displayed.
  2. For more information on the DROP response, see the DIAL command in z/VM: CP Commands and Utilities Reference.