Yealink SIP-T21 E2 Administrator's Guide

Setting Up Your System
109
Parameters
Permitted Values
Default
sip.nat_turn.enable
0 or 1
0
Description:
Enables or disables the TURN (Traversal Using Relays around NAT) feature on the IP
phone.
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->TURN->Active
Phone User Interface:
None
sip.nat_turn.server
IP address or
domain name
Blank
Description:
Configures the IP address or the domain name of the TURN (Traversal Using Relays around
NAT) server.
Example:
sip.nat_turn.server = 218.107.220.202
Note: It works only if the value of the parameter “sip.nat_turn.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->TURN->TURN Server
Phone User Interface:
None
sip.nat_turn.port
Integer from 1 to
65535
3478
Description:
Configures the port of the TURN (Traversal Using Relays around NAT) server.
Example:
sip.nat_turn.port = 3478
Note: It works only if the value of the parameter “sip.nat_turn.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:

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English