TP-Link TD-8811 User Manual page 42

After choosing the proper protocol, enter the correct parameters supported by your ISP. Enable
the configurations, and then you will go to the Internet.
Note:
The type of network protocol selected may be different in different areas. There are five types
（Figure 4-5）, so you should ask your ISP to acquire the Connection Type and Encapsulation
Mode.
PPP over ATM (PPPoA)
If you select the protocol of PPP over ATM (PPPoA), you will see the Figure 4-6.
PPP Username: Enter your username for your PPPoA connection to identify and verify
your account to the ISP.
PPP Password: Enter your password for your PPPoA connection.
Authentication Method: Choose a method of authentication, AUTO, PAP, CHAP, or
MSCHAP.
MTU: The default MTU value is 1480 Bytes. It is not recommended that you change the
default value unless required by your ISP. The value should be between 512 and 1500.
Dial on demand: If you check this box, the Internet connection can be terminated
automatically after a specified inactivity period (Inactivity Timeout) and be re-established
when you attempt to access the Internet again. The default value of Inactivity Timeout is
15. The value should be between 1 and 4320.
TD-8811 ADSL2+ Modem Router User Guide
Figure 4-6
37