Yealink SIP-T48G Administrator's Manual page 48

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
Menu->Settings->Advanced Settings (default password: admin) ->Network->WAN
Port->IPv4->DHCP IPv4 Client->Static DNS (Enabled) ->IPv4 Pri.DNS
network.secondary_dns
Description:
Configures the secondary IPv4 DNS server when the static IPv4 DNS is enabled.
Example:
network.secondary_dns = 202.101.103.54
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Network->Basic->IPv4 Config->Static IP Address->Secondary DNS
Phone User Interface:
Menu->Settings->Advanced Settings (default password: admin) ->Network->WAN
Port->IPv4->DHCP IPv4 Client->Static DNS (Enabled) ->IPv4 Sec.DNS
To configure DHCP via web user interface:
1. Click on Network->Basic.
2. In the IPv4 Config block, mark the DHCP radio box.
3. Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
4. Click OK to reboot the phone.
To configure static DNS address when DHCP is used via web user interface:
1. Click on Network->Basic.
34
Parameters Permitted Values
IPv4 Address
Default
Blank