Connect to the Comcast network that's using the business router you want to log into. You can use WiFi or an Ethernet cable to connect.
Open a browser window. You can access the login screen by going to this address:
You will be prompted with a login screen. If it’s your first time logging in, you will need to use the default credentials. The password will be one of the two below:
Username: cusadmin Password: highspeed Alternate password: CantTouchThis
Changing the password is easy. Once you’re logged in, click Change Password in the upper right hand corner. After entering your new password, click Save to store the changes. The administrator username cannot be changed.