Yes you can - see this helpful guide on how to do it.
Someone posted a link on how to do it, so I can't take any credit, but I did copy the instructions.
To set up DSL Stats, I used these settings:
Modem/Router model -
IP Address: - set to the IP of your router
Telnet login name: - leave blank admin
Telnet password - leave blank password
Telnet port - 23
tick the box " Requires command to enter shell"
Shell command - root
CLI command prefix - xdslctl
with these settings it began collecting data for me. HTH and HAND