Yealink SIP VP-T49G, Developer'S Manual

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XML Browser Developer’s Guide for Yealink IP Phones
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Depending on the IP infrastructure, Yealink has supported developing the XML
browser capability of the phones using HTTP. Yealink IP phones support two modes for
XML browser applications:

Phone-initiated

Server-initiated
You can press the predefined XML Browser key to trigger the phone initiated
application of XML browser. After you press the key, the IP phone issues an HTTP(s)
GET request message to the server, waits for the answer, decodes and displays this
response message like any web browser, such as Microsoft Internet Explorer or Firefox,
and would do as a web client. For more information on how to configure an XML
Browser key, refer to
Configuring an XML Browser Key .
Figure1 Yealink IP phone acting as a client
The server initiated application would be more frequently used on the network. In this
mode, end users do not need to do any configuration and operation.
The server can push an XML object to the phone via an HTTP POST. For more
information, refer to
XML Objects Pushed to the Phone .