MC9190 WM6.5 running TelnetCE 7.0.133 communicating with Oracle R12. Scanning a DataMatrix 14x14 code. In Telnet there are extra characters created. Look in the From Sub field in the pic. I can scan the same barcode into the PC version of Telnet client and the characters are not there. This tells me it is not coming from Oracle. Using the Diagnostic in TelnetCE the characters are not present. I can scan the 1D equivalent barcode and the characters are not present. I can even use a different client like Express Client from Intellinum and the characters are not present. It has to be the TelnetCE version but its the only prelicensed version I have.
This is not the barcode in the example but a similar one.
Turn on TelnetCE logging through the Emulation parameters and then try and capture this behavior. See if the scanned data sent to the host contains the extra characters or if its the screen received back from the host that does.