Yealink IP phones can interact with web server applications by receiving and handling an HTTP or HTTPS GET request. When receiving a GET request, the IP phone will perform the specified action and respond with a 200OK message.
Ensure that the server or computer’s IP address in in the “allow IP list”.
Or you can enter “any” in “Action URI allow IP List”, which means you will allow any devices to control the phone.
To dial a number, the valid URL format is http(s):///servlet?key=number=xxx&outgoing_uri=y. XXX is the number you want to dial, and y is the SIP URL you dial from.
For example, http://email@example.com. It refers to account 1006 from 10.2.1.48 dial 1234 out.