Yealink SIP-T4U Series User Manual

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
56
Default
0
Web UI
Network > NAT > TURN > Active
Parameter
static.sip.nat_turn.server
[2]
<y0000000000xx>.cfg
Description
It configures the IP address or the domain name of the TURN server.
Note: It works only if “static.sip.nat_turn.enable” is set to 1 (Enabled).
Permitted
Values
IP Address or Domain Name
Default
Blank
Web UI
Network > NAT > TURN > TURN Server
Parameter
static.sip.nat_turn.port
[2]
<y0000000000xx>.cfg
Description
It configures the port of the TURN server.
Note: It works only if “static.sip.nat_turn.enable” is set to 1 (Enabled).
Permitted
Values
Integer from 1024 to 65535
Default
3478
Web UI
Network > NAT > TURN > TURN Port (1024~65535)
Parameter
static.sip.nat_turn.username
[2]
<y0000000000xx>.cfg
Description
It configures the user name to authenticate to the TURN server.
Note: It works only if “static.sip.nat_turn.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Web UI
Network > NAT > TURN > User Name (Username)
Parameter
static.sip.nat_turn.password
[2]
<y0000000000xx>.cfg
Description
It configures the password to authenticate to the TURN server.
Note: It works only if “static.sip.nat_turn.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Web UI
Network > NAT > TURN > Password
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
[2]
If you change this parameter, the phone will reboot to make the change take effect.
Keep Alive Configuration
Yealink phones can send keep-alive packets to the NAT device for keeping the communication port open.
The following table lists the parameters you can use to configure keep alive.

Yealink SIP-T4U Series Specifications

General

Brand	Yealink
Model	SIP-T4U Series
Category	IP Phone
Language	English