Ok well my cable is ready - will be testing later today on serial input. The cable on the 2030 is a phone connector and under the shrink tubing is the diode and resistor...
Ok tried to read the data stream using the my home made cable with the FTDI cable from amazon as shown below. I have ordered a new MAXRS232 board from eBay as the one I had seems to have disappeared in the garbage box somewhere.... I have ordered a new one with the hope that will work to enable me to read the data stream.
http://www.amazon.com/gp/product/B004LC28G2 /ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1