Billion Electric Company BiPAC 8501/8521 - Manual (Page 131)

Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Chapter 4: Configuration
127
Authentication MD5
Encryption 3DES
Perfect
Forward
Secrecy
None
Pre-shared Key 12345678
Both sites should use the same value.
Example: Configuring your Router to Dial-in to the Server
Currently, Microsoft Windows operation system does not support L2TP incoming service.
Additional software may be required to set up your L2TP incoming service.