[App_rpt-users] Radio with iaxclient

Hi all. I have installed a private node with a URI connected to a iCOM radio. I can connect to my asterisk with some standard iax softphones, like http://sourceforge.net/projects/kiax/. But this iax clients are for phones, not for radios. There is no PTT support. I'm trying to develop my own softphone with the http://sourceforge.net/projects/iaxclient library, but I can't find any documentation about radio management with iaxclient. Any advice would be very appreciated. Thanks in advance. John