I use 3G modems connected to unattended terminals for a long time. I use ofono for managing 2G connections. All this time I'm suffering from modem hangs: during establishing 2G connection modem may hang, i.e. it stops reacting on AT commands to specific port. I'd tested a lot of modems of different brands before selecting one. And I have to say that *every* model has such issue. So I created a workaround for this (patched ofono): When I send AT command I start a timer that fires when no response is received during some timeout. So if timeout is reached I send AT+CFUN=1,1 command that makes modem reset. After that modem can be usable again. I was surprised that ofono doesn't have such functionality. So I think ofono should have some sort of mechanism to reset the modem if it stops responding. What do you think? -- Best regards, Yevhen