Yealink SIP-T54S Administrator's Manual page 121

In the IPv6 Config block, mark the DHCP or the Static IP Address radio box.
3.
- If you mark the Static IP Address radio box, configure the IPv6 address and other
configuration parameters in the corresponding fields.
(Optional.) If you mark the DHCP radio box, you can configure the static DNS address in
-
the corresponding fields.
Click Confirm to accept the change.
4.
A dialog box pops up to prompt that the settings will take effect after a reboot.
Click OK to reboot the phone.
5.
Setting Up Your System
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