Cisco :: To Configure WLC 2500 With Authentication 802.1x EAP TTLS

My client wants to test their new product with wireless authentication 802.1x EAP TTLS. They have CISCO WLC 2504. If CISCO WLC 2500 support EAP TTLS, if yes then how to configure.So far I have added Radius TTLS server into my WLC.  Under Radius on WLC added radius server IP and key and created new SSID 802.1x WPA+WPA2 ( WPA policy2 and WPA encryption AES) after that under SSID AAAservers selected drop down same server IP.But user tried and didn’t work also we didn’t see any hit on radius server. Yea policy has added on radius.My client wants to use TTLS instead of TLS because in TLS you have to use client certificate on client side but on TTLS you can use certificate on client side but it is optional. So they want to stick with TTLS. But I am not seeing any documentation on TTLS with cisco WLCMy android phone galaxy II has TTLS option under EAP 802.1x, so android devices support TTLS.