how to control unwanted characters from printing

PortServer TS 4 MEI Version 82000747_M1 04/07/2004, running on SLES 11 SP2.

how can i control unwanted characters from printing to serial printers connected to the device.

Typically, the print format is controlled by the printer driver. You might need to contact the printer manfacturer or SuSE support resource to determine the proper driver.

The PortServer unit simply passes the data from the host and does not translate or manipulate the data. This can be shown by using cat. For example, from the root prompt of the Linux host:

cat /etc/inittab > /dev/ttyxyz