Yealink SIP-T21 E2 Administrator's Guide

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
Network->NAT->TURN->TURN Port (1~65535)
Phone User Interface:
None
sip.nat_turn.username
String
Blank
Description:
Configures the user name to authenticate to TURN (Traversal Using Relays around NAT)
server.
Example:
sip.nat_turn.username = admin
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->User Name
Phone User Interface:
None
sip.nat_turn.password
String
Blank
Description:
Configures the password to authenticate to the TURN (Traversal Using Relays around NAT)
server.
Example:
sip.nat_turn.password = yealink1105
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->Password
Phone User Interface:
None
sip.listen_port
Integer from 1024
to 65535
5060
Description:
Configures the local SIP port.
Web User Interface:
Settings->SIP->Local SIP Port

Yealink SIP-T21 E2 Specifications

General

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