Yealink SIP-T28P - Manual (Page 27)

Getting Started
15
If your phone cannot contact a DHCP server for any reason, you need to configure
network settings manually. The IP phone can support either or both IPv4 and IPv6
addresses.
To configure the IP address mode via phone user interface:
1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port.
2. Press or to select IPv4, IPv6 or IPv4 & IPv6 from the IP Mode field.
3. Press the Save soft key to accept the change or the Back soft key to cancel.
To configure a static IPv4 address via phone user interface:
1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port->IPv4->Static IP Client.
2. Enter the desired values in the IP Address, Subnet Mask, Default Gateway, Pri.DNS
and Sec.DNS fields respectively.
3. Press the Save soft key to accept the change or the Back soft key to cancel.
To configure a static IPv6 address via phone user interface:
1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port->IPv6->Static IPv6 Client.