Keep Alive Configuration - Yealink T54S Administrator's Manual

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
static.sip.nat_turn.username = admin
Note: It works only if "static.sip.nat_turn.enable" is set to 1 (Enabled).
Permitted
String
Values
Blank
Default
Network->NAT->TURN->User Name
Web UI
static.sip.nat_turn.password
Parameter
It configures the password to authenticate to the TURN (Traversal Using Relays around
NAT) server.
Example:
Description
static.sip.nat_turn.password = yealink1105
Note: It works only if "static.sip.nat_turn.enable" is set to 1 (Enabled).
Permitted
String
Values
Blank
Default
Network->NAT->TURN->Password
Web UI
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for
T41P/T41S/T27P/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2, X=1.
[2]
If you change this parameter, the IP phone will reboot to make the change take effect.

Keep Alive Configuration

Yealink IP 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.
account.X.nat.udp_update_enable
Parameter
It configures the type of keep-alive packets sent by the IP phone to the NAT device to
Description
keep the communication port open so that NAT can continue to function.
0-Disabled
1-Default (the IP phone sends UDP packets to the server).
Permitted
Values
2-Options (the IP phone sends SIP OPTIONS packets to the server).
3-Notify (the IP phone sends SIP NOTIFY packets to the server).
1
Default
Account->Advanced->Keep Alive Type
Web UI
[2]
[1]
<y0000000000xx>.cfg
<MAC>.cfg
38