What statement regarding Service Selection Gateway is INCORRECT?

A.
For Proxy Service, the SSG will proxy the Access-Request to the remote AAA server. Upon receiving an Access-Accept from the remote RADIUS server, the NRP-SSG responds to the subscriber with the Access-Accept.

B.
Transparent passthrough service allows unauthenticated subscriber traffic to be routed through the NRP-SSG in either direction.

C.
For Proxy service, the SSG can perform NAT between the address assigned by the remote server and the subscriber’s real IP address.

D.
For non-PPP users, such as those in bridged networks, if the user disconnects from a service without logging off, the connection will remain open and the user can reaccess the service without going through logon procedure as long as the session has not timed out.

E.
The PPP Termination Aggregation (PTA) service can be used only in dialup environments and with PPPoE in DSL environments. It cannot be used with PPPoA.