Monoprice PID 8743 Wireless N ADSL2 Modem and Router 802 11N WPS Function 2T2R 300Mbps - Manual (Page 49)

ADSL2/2+ Router
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After successful configurations, use your PC or other devices to dialup
and then you can access Internet.
Note: When you need to configure several WAN connections (multiple
PVCs), first configure the needed number of ATM interfaces and then
follow the above corresponding configuration procedures.
PPPOA
First, click “Advanced Setup”—“Connection Mode” (select DSL
Mode and click “Apply”)----“WAN Service”---“ATM Interface” to enter
ATM PVC Configuration interface; Then select PPPoA and click
“Apply/Save” there as shown in the figure below: