TP-Link TD-W8960N User Manual page 26

TD-W8960N
Remove: Select the check box in the table on the screen above and then click the Remove
button, the corresponding interface will be deleted in the table.
Note:
If the interface is used by the configuration of the
corresponding WAN Service entry first before you can remove it here.
Add: Click the button, and you can add a new interface in the next screen.
300Mbps Wireless N ADSL2+ Modem Router User Guide
Figure 4-2
4.4.2 WAN
19
Service, you need to remove the