By adding and configuring a specific user (other than root), a menu can be assigned allowing user easy access to ports or servers. The menu can be configured for outbound network users and/or inbound remote users (modem dialin). Exiting the connection or using the telnet escape sequence will return you to the menu.
From the root prompt of the Digi unit:
#> set menu range=1 t1="firstlineoftitle" t2="secondlineoftitle"
#> set menu range=1 m1="Connect to AIX" c1="telnet 192.168.1.1"
#> set menu range=1 m2="Connect to Linux" c2="telnet 192.168.1.2"
#> set menu range=1 m3="Reconnect to last session" c3="reconnect"
#> set menu range=1 m4="Close last session" c4="close"
Next, create the user for the menu and specify a telnet escape character. Issuing the escape character along with a carriage return [CR] will break your session and bring you back to the menu. In this example [Ctrl]- j will break out of your session
#>set user name=manager defaultaccess=menu menu=1
#>set user name=manager telnetesc=^j outgoing=on
Using this method, only the last connection will remain open for reconnecting. Selecting the "close" menu option will close the last connection. Selecting reconnect, will reestablish the last connection.