I have an application "emulating" the old ENQ/ACK protocol linking an HP935 to handheld pc's. I am having a problem with the HP "reacting" to a DC3 (CTRL-S) character when it received from the handheld. (A DC3 is randomly genereated by the handhelp as a CRC value!!! -so I cannot control this!!). I have a supsicion that there is a way to configure a DTC asynch port to be "transparent" to ALL control characters!??? Anyone know how to accomplish this!!!! - George Giesey [log in to unmask]