F5 handling OTP for AnyConnect VPN

Is it possible to use F5 for handling the OTP generation, sending SMS to client etc when an external VPN solution is used?

 

This is the situation: AnyConnect is used as RA-VPN to a ASA appliance. Today Portwise is used to handle OTP, but Portwise is to be replaced. The ASA talks RADIUS to Portwise that manages the OTP tasks:

 

• Generate OTP
• Send SMS
• Verifiy user input
• Returns Accept/Reject to ASA.

The F5 APM is strictly HTTP based, right? Can APM be used to solve this problem?