[mithrandir (Andrew)]

Originally Posted by MikeyB

Hmm - in that case, this should be what you need: Hand control RS232 port cable

The easiest place to get the 4 pin plug is a replacement telephone handpiece to phone cable. I got a coiled one and it works fine. You can either make up an RJ11 socket to DB9 cable to plug the other end into, or cut the other plug off and attach the DB9 plug.