I picked up a TI Silent 700 model 707 recently (a
nice, small variant
with built-in modem, see
http://pobox.com/~fmw/misc/Silent700.jpg),
with hopes of converting to use as a direct line serial terminal.
Before I open it up and poke around, does anyone already know how to
do this? Portwise, there are two RJ11 ports (phone&wall) and a 6-pin
acoustic coupler port of unknown pinout.
I suspect it's possible, but I've left mine alone and instead
sought other model Silent 700s for use as serial terminals.
One of my 707s has the coupler; I'll see if I can't determine
the pinout for you, but IIRC, the connector carries audio
only.
Regards,
-doug q