Yealink CP860 SERIES, Administrator'S Manual, Page: 140 / 1126

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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To configure NAT traversal and STUN server via phone user interface:
1.
Press
Menu
->
Advanced
(default password: admin) ->
Network
->
NAT
->
NAT Status
.
2.
Press or , or the
Switch
soft key to select the desired value from the
NAT Status
field.
3.
Enter the IP address or the domain name of the STUN server in the
STUN Server
field.
4.
Enter the port of the STUN server in the
STUN Port
field.
5.
Press the
Save
soft key to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
6.
Click
OK
to reboot the phone.
To configure NAT traversal for a specific account via phone user interface:
1.
Press
Menu
->
Advanced
(default password: admin) ->
Accounts
.
2.
Press or to select the desired account and then press the
Enter
soft key.
3.
Press or , or the
Switch
soft key to select the desired value from the
NAT Status
field.
4.
Press the
Save
soft key to accept the change.
Keep Alive
IP phones can send keep-alive packets to the NAT device for keeping the communication port
open.
Procedure
Keep alive feature can be configured using the following methods.
Central Provisioning
(Configuration File)
<MAC>.cfg
Configure the type of keep-alive
packets on a per-line basis.
Parameter:
account.X.nat.udp_update_enable
Configure the keep-alive interval on a
per-line basis.
Parameter:
account.X.nat.udp_update_time
Web User Interface
Configure the type of keep-alive
packets on a per-line basis.
Configure the keep-alive interval on a
per-line basis.
Navigate to
:
http://<phoneIPAddress>/servlet?p=a
ccount-adv&q=load&acc=0