[Gumstix-users] POTS modem thru Stuart serial port?

[David F. <da...@fa...>]

I plan to connect my Waysmall 200ax to a POTS modem (USR Sportster 56k)
so that I can dial up the system and download some files collected by a
sensor. I plan to connect the modem to one of the serial ports (and the
sensor to the other serial port). Has anyone tried such a setup and (a)
do you know whether the TTL Level logic out of the Stuart serial line
will be enough to drive the modem, and (b) do I need a null-modem or a
straight-through modem cable?
I have tried searching the wiki and this mail-list for "modem" but
failed to find info on a comparable setup.
Any help much appreciated,
David