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Global Call API for HMP on Windows Programming Guide — August 2006
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10
10.
Handling Service Requests
This chapter describes the Global Call Service Request (GCSR) feature. Topics include the 
following:
10.1
Service Request Overview
The Global Call Service Request (GCSR) feature is an optional feature that allows a device to send 
a request to another remote device for some kind of service. Some examples of the services that 
may be requested are: 
Device Registration 
Channel Setup 
Call Setup 
Information Requests 
Operational Requests 
In general, this feature is useful when a Global Call application needs to make a request between 
two Global Call devices across a network. 
Some examples of typical uses are: 
Registration Requests 
Administration Requests (for example, logon requests) 
Bandwidth Requests 
Capabilities Requests (for example, determining remote-side capabilities) 
Preference Requests (for example, informing remote-side of setup preferences) 
Since this feature is rather generic, the capabilities in a given technology are largely dependent on 
the support provided by the call control libraries for that technology. Refer to the appropriate 
Global Call Technology Guide for more information. 
Figure 32 shows the architecture of the GCSR feature.