If you want to make your connection persistent, i.e. redial automatically your ISP when your line drops down, do the following:

Go back to the option 1) of the ppp configuration file menu to edit the /etc/ppp/peers/provider file and add the following options after the "baud rate" entry:

(...)
115200          # baud  rate
persist
holdoff 10
(...)

backup the ppp.lrp package.