Specifications

Aastra July 2014 PA-001011-03-04
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Figure 3: Aastra IP Phone acting as a server
2.4 System Architecture
The XML applications are hosted by one or multiple Web servers which will serve as a proxy to
either other applications or to Internet Web servers.
2.4.1 Corporate applications
The following figure details the architecture to allow Aastra IP Phones to access an internal
application. The application hosted by the Web server translates the phone requests to a protocol
specific to the target application and formats the answer as an XML object to be displayed on the
phone.
Corporate LAN
Web Server Application
Aastra
SIP Phone
HTTP
Any
protocol
Call Processing
Figure 4: Access to an internal application
2.4.2 Internet applications
The following figure details the architecture of an XML application that would retrieve data from the
internet such as a real-time stock-quote service.
Note: for certain Web applications that are not real time, the Internet content can be cached
on the XML web server for a faster access.