7.3.1 Feature Transparency and Extension Overview

FTE consists of three Global Call functions. These functions provide the flexibility to extend the generic Global Call API to access all technology or protocol-specific features unique to any given network interfaces that were formerly only accessible via their native technology call control libraries. Thus, all technology-specific features may be accessible from the application solely via the singular Global Call library interface, thereby alleviating the need to access these call control libraries directly via additional APIs. Figure X shows the architecture of the FTE feature.

The Global Call API functions provided for FTE are:

gc_Extension( )

provides a generic interface extensible for technology-specific features

gc_GetUserInfo( )

retrieves technology-specific user information for the specified line device

gc_SetUserInfo( )

permits technology-specific user information to be defined for the specified line device or call

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