[8.305] CiscoVPN On Demand -> iPad 5.1

Hello Folks,

unfortunately I can'tget Cisco VPN On Demand working. I found this to be a task being discussed here quite frequently. However, I failed to find a solution on my own.
I want to access a Windows-Terminalserver from a couple of iPads.
Therefore I set up CiscoVPN-Client to connect to the local network and installed "2X-Client"-App as Terminalserverclient on the iPad.
I configured the needed firewallrules and set up a connection in the client software.
Connecting VPN and the terminalserversession works like a charm with reasonable speed over 3G.

After that I tried to set up On-Demand connection as offered by ASG.
I entered the IP-address of the terminalserver into the list of on-demand-hosts exactly as it is configured in the client software. I then deleted the old vpn-profile from the iPad and reinstalled it via User-Portal.

However, I don't see any automatic startup of VPN, neither on starting the terminalserversession nor on accessing the terminalserver via browser on the iPad.

What did I miss?

Any help would be greatly apreciated!

Thanks a lot!