Hi Andreas
At current, the majority of users use a cisco VPN client.
Certain users use an APN integrated 3G device.
This device connects the user's machine directly to the client's internal domain network automatically when connected, without VPN interaction, as if the user connected to the local network on-site.
The issue is that this bypasses the security VIP provides, and the challenge is to see if VIP can integrate with this APN infrastructure, alongisde the already established VPN setup.
Hope that makes it a bit clearer.
Thanks for the assistance.