Digi PortServer/8 User Manual page 26

Flow Control
Please note that setting up and using modems through the PortServer terminal server (or any
system, for that matter!) can get complicated quickly. See Modems on page 86 for more infor-
mation and application notes.
Page 18 Ÿ Quick Start
Change the flow control for Port #4 to RTS/CTS ("hardware")
by typing:
#>set flow rts=on range=4
#>set flow cts=on range=4
(In the above, set flow rts=on sets port #4 to use hardware
flow control for input data. set flow cts=on sets port #4 to
use hardware flow control for output data.) Also note that the
modem must be set (through AT commands or DIP switches)
for hardware flow control.
You must also ensure that software flow control is off:
#>set flow ixon=off range=4
#>set flow ixoff=off range=4
set commands are discussed in detail on page 38.