Yealink SIP-T54S Administrator's Manual page 772

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
the "Event: ACTION-URI" header. The phone will directly perform the specified action.
Note: It works only if the value of the parameter "features.action_uri.enable" is set to 1
(Enabled).
Web User Interface:
None
Phone User Interface:
None
features.action_uri_limit_ip
Description:
Configures the IP address of the server from which the IP phone receives the action URI
requests.
For discontinuous IP addresses, multiple IP addresses are separated by commas.
For continuous IP addresses, the format likes *.*.*.* and the "*" stands for the values
0~255.
For example: 10.10.*.* stands for the IP addresses that range from 10.10.0.0 to
10.10.255.255.
If left blank, the IP phone will reject any HTTP GET request.
If it is set to "any", the IP phone will accept and handle HTTP GET requests from any IP
address.
Example:
features.action_uri_limit_ip = 10.3.6.117, 10.3.6.119
Note: It works only if the value of the parameter "features.action_uri.enable" is set to 1
(Enabled).
Web User Interface:
Features->Remote Control->Action URI Allow IP List
Phone User Interface:
None
To configure the trusted IP address(es) for action URI via web user interface:
Click on Features->Remote Control.
1.
Enter the IP address or any in the Action URI Allow IP List field.
2.
746
Parameters Permitted Values
IP address or any
Default
Blank