XML BASED DOWNLOADABLE PHONEBOOK GUIDE Page 2 of 15
INTRODUCTION
The Grandstream GXP2130/GXP2140/GXP2160 support XML based downloadable phone book for users
to share and maintain a phone book remotely easily.
For the ease of efficient deployment and management, the XML phone book file could be stored on a web
server for the phones to download. There are also applications that require a centralized directory server
and have all phones synchronized with the server periodically.
This document specifies the Grandstream XML based downloadable phone book configuration that will be
applied to GXP2130/GXP2140/GXP2160 firmware version 1.0.0.17 or newer. An example XML phone
book file is provided at the end of this guide. Users could start a phone book by adding contacts to the
example file or exporting the existed phone book file from phone's LCD.
WHAT IS XML
XML (eXtensible Markup Language) is a markup language* for documents and applications containing
structured information. This information contains both content (text, pictures, input box and etc.) and an
indication of what role that content plays (e.g. contents in a section header are different from contents in a
footnote). Almost all documents are structured.
*A markup language is a mechanism to identify structures in a document. The XML specification defines a
standard way to add markup to documents.
WHY XML
What benefits does XML provide to SIP endpoints? XML enables our SIP phones to serve as output
devices and allows the phones to interact with external applications in a flexible and programmable
manner.
XML API ARCHITECTURE
The XML based phone book downloading for the GXP2130/GXP2140/GXP2160 could use HTTP or TFTP
as the transport protocol. The following figure shows how it works via HTTP as an example. First, the
GXP2130/GXP2140/GXP2160 initiates the HTTP GET Request to the HTTP server and waits for the
response. Once the phone receives the response with XML content in BODY, it displays the information.
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