On Sun, Aug 28, 2005 at 07:32:12PM -0400, Martin Hicks wrote: > When I plug this Hayes 56k external modem into the machine that is > supposed to have the modem the RD and SD lights come on, in > addition to the RS and MR lights. The recieve data and send data > lights should not be on. They aren't on when I hook this modem up > to my laptop. Try 'statserial'. If you can, run it on both ttyS0 and ttyS1 at once (e.g. in two different windows). You'll get a screen with all the various wire states. It should change when you plug or unplug the modem. In particular, Data Terminal Ready should turn on.
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