In MacPPP click on the Config PPP icon. Click the Config button and on the next screen change atdt to atdp. Click Done. 5. Line drops out after a fixed length of time each time you connect from home. This problem is characterised by your modem dropping the line after the same length of time each time you connect.
Some telephone handsets draw power from the telephone line at regular intervals.
It is this which causes the modem to disconnect. To alleviate this you have to unplug any other phones or faxes which use the same phone line as your modem when you are online. In the longer term talk to Telstra about getting phones which do not draw power from the phone lines. The other thing to watch out for is having EasyCall call waiting set on for a single line on a home phone. Further Reading on line dropout problems 1.