1.5 Global Call Object Identifiers

The Global Call API is call-oriented, that is, each call initiated by the application or network is assigned a Call Reference Number (CRN) for call control and tracking purposes. Call handling is independent of the line device over which the call is routed. Each line device or device group is assigned a Line Device Identifier (LDID) that enables the application to address any resource or group of resources using a single device identifier. Certain features, such as Feature Transparency and Extension (FTE), Real Time Configuration Management (RTCM), and Global Call Service Request (GCSR), operate on a basic entity called a Global Call target object. Target objects are identified by a target type and a target ID.

The following topics provide more detailed information:

• Line Device Identifier
• Call Reference Number
• Object Identifiers and Resource Sharing Across Processes
• Target Objects

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