I am using debian linux and connecting to a service provider using pppd I'm using the persist option, if it matters. Anyway, under heavy load, such as a file transfer or listening to real audio, the connection will drop. Otherwise it lasts indefinitely. I can connect to another provider without any difficulty but they purposefully disconnect me every 2 hours that elapse. I've tried lots of modem connect strings, as well as fiddleing with the pppd options files. Nothing seems to help.