iRule Radius logging

Hi All, As i can see in iRule wiki, there is a RADIUS section there, RADIUS::avp, RADIUS::code and RADIUS::id, but unfortunately there is no explenation there. Can anyone share the information? I'm curious about logging the RADIUS message, especially logging MSISDN and corellation with Client IP address (Framed-IP-Address) if i'm not mistaken. Can it be done with this iRule statement? -Fadhil