IPAD 802.1x EAP-GTC not working

I am trying to connect to wifi enterprise 802.1x rsa 802.11agn (WPA2,AESCCMP,PEAPv1(EAP-GTC)).

Our setup

Trapeze_AP-M522 -> Trapeze_MX200R (7.3.4.4.0) -> Cisco ACS (5.1) -> RSA

It's working with windows pc and android (phone, tablet) . When we use EAP-MSCHAPv2 it's working BUT I need 2 factors.

We traced the handshake in the cisco ACS, the ipad first try MSCHAPv2 then send another packet not recongnise as a GTC and then failed.

Any help and / or a sample ICU .mobileconfig would be very apreciated.

In ICU we select WPA/Enterprise , protocol PEAP, Authentication Ask for a password with each connection.

Thanks