So here's a few tips to configure in a Telekom Austria Annex A Connection:
Under Interface Setup:
Internet: ATM VC: PVC0-4, PVC6-7: Disabled PVC5:
VPI 8 VCI 48
Encapsulation: PPPoA / PPPoE
PPPoE / PPPoE
Encapsulation: PPPoA VC-Mux
IP Address
Get IP Address: Dynamic
Static IP Address, IP Subnet Mask, Gateway: 0.0.0.0
NAT: Enabled
Default Route: Yes
TCP MTU 1480
Dynamic Route: RIP2-B, Direction: None, Multicast: IGMP v2
Absolutely not enable the firewall + Admin Change Password ...