Yealink T21PE2 - Page 34

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Advanced (default password: admin)->Network->WAN Port->IPv6->Static IP->Primary DNS
Or Menu->Advanced (default password: admin)->Network->WAN Port->IPv6->DHCP->Static DNS
(Enabled) ->Primary DNS
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920:
Menu->Settings->Advanced Settings (default password: admin)->Network->WAN Port->IPv6->Static
IPv6 Client->Pri.DNS
Or Menu->Settings->Advanced Settings (default password: admin)->Network->WAN Port->IPv6-
>DHCP IPv6 Client->Static DNS(Enabled) ->Pri.DNS
Parameter
static.network.ipv6_secondary_dns
[1]
<y0000000000xx>.cfg
Description
It configures the secondary IPv6 DNS server.
Example:
static.network.ipv6_secondary_dns = 2026:1234:1:1:c3c7:c11c:5447:23a6
Note: It works only if “static.network.ip_address_mode" is set to 1 (IPv6) or 2 (IPv4 & IPv6). In DHCP envir-
onment, you also need to make sure “static.network.ipv6_static_dns_enable" is set to 1 (On).
Permitted
Values
IPv6 Address
Default Blank
Web UI Network->Basic->IPv6 Config->Static IP Address->Secondary DNS
Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Advanced (default password: admin)->Network->WAN Port->IPv6->Static IP->Secondary DNS
Or Menu->Advanced (default password: admin)->Network->WAN Port->IPv6->DHCP->Static DNS
(Enabled) ->Secondary DNS
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920:
Menu->Settings->Advanced Settings (default password: admin)->Network->WAN Port->IPv6->Static
IPv6 Client->Sec.DNS
Or Menu->Settings->Advanced Settings (default password: admin)->Network->WAN Port->IPv6-
>DHCP IPv6 Client->Static DNS(Enabled) ->Sec.DNS
Parameter
static.network.ipv6_icmp_v6.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to obtain IPv6 network settings via SLAAC (Stateless Address Auto-
configuration).
Note: It works only if “static.network.ipv6_internet_port.type” is set to 0 (DHCP). It is only applicable to
T54S/T52S/T48S/T48G/T46S/T46G/T29G IP phones. SLAAC is enabled on
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920 IP phones by default. You
are not allowed to configure this parameter for these IP phones.
Permitted
Values
0-Disabled
1-Enabled
Default 1
Web UI Network->Advanced->ICMPv6 Status->Active