Tenda D840 User Manual page 36

2) Click "Next" to display
the window shown in
the right figure.
a. Authentication
Method:
AUTO/PAP/CHAP/MSC
HAP. Usually, "AUTO" is
selected.
b. Dial on demand:
If you check this option,
you need to manually
enter the timeout time.
If no flow is detected
when the timeout time
is up, the device will
disconnect the network
connection
automatically. And
when a flow is
detected, the device
automatically makes
dial-up connection
again.
If you disable this
D840R ADSL2+ Router User Guide
31