PEAP/EAP_GTC

Hello: Are there any clients that actually display the EAP-GTC challenge? Essentially, I am trying to use EAP-GTC similarly to how PAP Access-Challenge works: Client: -------User/Pass---------------->Server Client: <--Challenge Message---------Server Client: -------Challenge Response--->Server Client: <-------Accept------------------>Server So far, I cannot seem to find documentation to suggest that I CANNOT do this, and the spec suggests that I can, but I cannot seem to find anything that will do this. In addition, are there any resources that thoroughly documents EAP-GTC? The RFCs do not provide much information. Regards.