Yealink SIP-T48G - Manual (Page 30)

User Guide for the SIP-T48G IP Phone
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3. Tap the desired value (IPv4, IPv6 or IPv4 & IPv6) from the pull-down list.
4. Tap the Save soft key to accept the change or to cancel.
To configure a static IPv4 address via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv4.
2. Tap the gray box of the Type field.
3. Tap Static IP from the pull-down list.
4. Enter the desired values in the IP Address, Subnet Mask, Gateway, Primary DNS
and Secondary DNS fields respectively.
5. Tap the Save soft key to accept the change or to cancel.
To configure a static IPv6 address via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv6.
2. Tap the gray box of the Type field.
3. Tap Static IP from the pull-down list.