how to telnet to a 7800n?

Trying to find out if my line has interleaving set on on my 7800n
From previous posts, it appears I can get it via telnet.
I have tried connecting and it come up with login, once I type the username and hit enter, it brings up password, this is where it fails. It doesn't want to let me type anything in.
I have tried telnet via command prompt and using a program called putty, both fail at the same point.
Is there anything in the router settings that I need to change to allow telnet access?

Try just entering return when prompted for the user name and password, i.e. don't type in a user name.

eta: alternatively try admin/admin for user name/password.

Edited by john2007 (Thu 01-Sep-11 11:44:19)

You're not entering your ISP login username, are you? What's needed is the router admin username and password (admin/admin by default).

I am using the default admin/admin login
Not entering anything in the username does the same.

Worked it out now. I was originally logged in via web browser, closed the page and was allowed to log in via telnet.
Still doesn't show anything being typed on the password bit though, but goes straight to a new line starting with ">"

Try entering the following.
>adsl info --stats