Configures the address(es) from which
Action URI will be accepted.
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 cannot receive or
handle any HTTP GET request.
If it is set to “any”, the IP phone will accept
and handle HTTP GET requests from any IP
address.