how to reinitialise com-port

hi!

i try to reinitialise the serial-port com1…

cause??
there is another computer (winxp) connected to the computer with qnx (6.2.1) by serial-cable using tera-term to make telnet. but if the qnx-computer isn’t already running on startup of the win-computer, teraterm can not open any connection…(

but how can i reinitialise the com-port??
i read somethinmg about using special escape-characters, but this didn’t work…:frowning:
is there any other posibility??

greets
mb