Linkskey LKR-604 - Manual (Page 36)

LKR-604
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PPPoE (Dial-Up xDSL)
If you are connecting to the Internet using a PPPoE (Dialup xDSL)
Modem and your ISP has provided you with a password and username,
then your ISP uses PPPoE. Select this option, and enter the required
information. If the ISP provided a Service Name, enter it in the Service
Name field. Otherwise, leave it blank.
The Service Name, IP Address, and DNS Address fields must be
completed if your ISP provides you with this information. If your ISP
provides a Dynamic IP Address, skip these fields.
The MTU feature specifies the maximum packet size permitted for
network transmission. Enter the value desired; for most DSL
Broadband Internet connection users, 1492 is recommended. By
default, MTU is set at 1492. The Maximum Idle Time feature can control
the Internet connection time if you want to reduce the connection fees
charged by your ISP (default time=0, always connect).