ZyXEL 4-port Prestige 792H Router 91-004-342001 ユーザーズマニュアル

Prestige 792H G.SHDSL Router 

WAN   5-13 

peer disconnects right after a successful authentication, make sure that you specify the correct 
authentication protocol when connecting to such an implementation. 

To edit your Prestige’s advanced WAN backup settings, click WAN, WAN Backup and then the 
Advanced Setup button. The screen appears as shown.