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
0-Disabled
1-Enabled
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Network->NAT->Nat Manual->Active
Phone User Interface:
None
network.static_nat.addr
IP address
Blank
Description:
Configures the IP address to be advertised in SIP signaling.
It should match the external IP address used by the NAT device.
Example:
network.static_nat.addr = 10.3.5.33
Note: It works only if the value of the parameter “network.static_nat.enable” is set to 1
(Enabled). If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Network->NAT->Nat Manual->IP Address
Phone User Interface:
None
ice.enable
0 or 1
0
Description:
Enables or disables the ICE (Interactive Connectivity Establishment) feature on the IP
phone.
0-Disabled
1-Enabled
Note: To use ICE feature, you have to configure the STUN and/or TURN server address in
advance. If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Network->NAT->ICE->Active
Phone User Interface:
None