You need a null modem cable : One serial interface on your computer (PC)

Connect this cable from your PC to your rs232 port (on the telestrat).

Use Hyperbasic cardridge :

type :

SLOADA#1000 Enter

It means Your data will be loaded in #1000 address.

On your PC, with linux type :

stty -F /dev/ttyS0 -icrnl igncr ignbrk -brkint -inlcr -inlcr -ixoff -ocrnl -onlcr -onlret -onocr

cat mydata > /dev/ttyS0

On your telestrat :

CTRL + C

It will print the last address filled by your data

It's done