Router(config)#interface
dialer dialer-rotary-group-number
Configures the router to
automatically determine the service provider’s DSL modulation
Router(config-if)#dsl
operating-mode { auto | ansi-dmt | itu-dmt | splitterless }
Enables a dynamic address
from the service provided using IPCP.
Router(config-if)# ip
address negotiated
Router(config-if)# ip mtu
bytes