Avaya One-x mobile preferred for IPO (IPhone)

[mqatatsheh]

Hello ...

I have problems at connecction of the IPhone to One-x by means of the Avaya One-x mobile preferred for IPO program. Phone on Android incorporated normally.
Somebody can prompt a solution?

IP Office 500v2: 10.1
POWER USER
One-X Portal: 10.1 (Application Server)
IOS: 7 Plus

Thanks