Draytek Vigor2860 series User Manual page 636

For users using previous Windows system (e.g., 2000/XP), simply click Start >> Run and type
Telnet 192.168.1.1 in the Open box as below. Next, type admin/admin for
Account/Password. And, type ? to get a list of valid/common commands.
622 Vigor2860 Series User's Guide