Yealink SIP-T2 SERIES Administrator's Manual page 780

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
1-On
If it is set to 0 (Off), the IP phone will use the IPv6 DNS obtained from DHCP .
If it is set to 1 (On), the IP phone will use manually configured static IPv6 DNS.
Note: It works only if the value of the parameter ―network.ipv6_internet_port.type‖
is set to 0 (DHCP). If you change this parameter, the IP phone will reboot to make
the change take effect.
Web User Interface:
Network->Basic->IPv6 Config->IPv6 Static DNS
Phone User Interface:
Menu->Settings->Advanced Settings (default: admin) ->Network->WAN
Port->IPv6->DHCP IPv6 Client->Static DNS
network.ipv6_internet_port.ip
Description:
Configures the IPv6 address.
Example:
network.ipv6_internet_port.ip = 2026:1234:1:1:215:65ff:fe1f:caa
Note: It works only if the value of the parameter ―network.ip_address_mode‖ is set
to 1 (IPv6) or 2 (IPv4 & IPv6), and "network.ipv6_internet_port.type" is set to 1 (Static
IP Address). If you change this parameter, the IP phone will reboot to make the
change take effect.
Web User Interface:
Network->Basic->IPv6 Config->Static IP Address->IP Address
Phone User Interface:
Menu->Settings->Advanced Settings (default password: admin)
->Network->WAN Port->IPv6->Static IPv6 Client->IPv6 IP
network.ipv6_prefix
Description:
Configures the IPv6 prefix.
Note: It works only if the value of the parameter ―network.ip_address_mode‖ is set
to 1 (IPv6) or 2 (IPv4 & IPv6), and "network.ipv6_internet_port.type" is set to 1 (Static
IP Address). If you change this parameter, the IP phone will reboot to make the
change take effect.
Web User Interface:
758
Parameters Permitted Values
IPv6 address
Integer from 0 to 128
Default
Blank
64