How to HardwareConfigure the Settings of Zyxel p-661h-1 PLDT Modem by on January 1, 2014 share The modem/router was from PLDT, some of its default factory function is modified to adapt the Office Settings. Configure your computer LAN address manually: IP Address: 192.168.1.X, where X is any number from 2-254 Subnet Mask:read more