Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Parameters
Permitted Values
Default
Phone User Interface:
Menu->Advanced (default password: admin) ->Network->WAN Port->IPv4->Type (Static
IP)->Sec.DNS
To configure the IP address mode via web user interface:
1. Click on Network->Basic.
2. Select desired value from the pull-down list of Mode(IPv4/IPv6).
3. Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
4. Click OK to reboot the phone.
To configure a static IPv4 address via web user interface:
1. Click on Network->Basic.
2. In the IPv4 Config block, mark the Static IP Address radio box.
3. Enter the desired values in the IP Address, Subnet Mask, Default Gateway, Primary DNS
and Secondary DNS fields.
4. Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
5. Click OK to reboot the phone.
To configure the IP address mode via phone user interface: