Some helpful instructions on Stuart Colville’s blog explain how to do this. To produce e.g. abc'def, you need to enter $echo 'abc'\''def' The '\'' first closes the single quotes, then puts a literal (escaped) ' and then opens single quotes again.
I found a good set of instructions for connecting to the Eduroam Wifi service from the website of the University of Valencia. These work for me in Oxford. http://www.uv.es/siuv/cat/zxarxa/wifi/Manual_Eduroam_Symbian_S60_v3.pdf (Local mirror).