I want to change adsl mode into g.dmt. But I cant find the adsl tab when I go to 192.168.1.1. So how can i change the adsl setting =.=

I want to change my adsl mode configuration into g.dmt or something like that. The problem is I cant find the adsl setting tab when i open 192.168.1.1. So how can I change the adsl mode with this...