2. Applying GlobalCall Functions to ISDN Applications

This chapter describes the GlobalCall API functions that have additional functionality or perform differently when used in an ISDN environment. The function descriptions are presented alphabetically and contain information that is specific to ISDN applications. Generic function description information (that is, information that is not technology-specific) is provided in the GlobalCall API Software Reference.

Note: The ISDN technology-specific information provided in this chapter must be used in conjunction with the detailed, generic function descriptions found in the GlobalCall API Software Reference.

In addition to the functions described in this chapter, the following GlobalCall ISDN functions provide specific support for DPNSS and Q.SIG ISDN protocol features. The function descriptions for these functions are provided in the GlobalCall API Software Reference.

• gc_HoldCall( ) - Places active calls on hold.
• gc_HoldAck( ) - Accepts hold requests from remote equipment.
• gc_HoldRej( ) - Rejects hold requests from remote equipment.
• gc_RetrieveAck( ) - Accepts a retrieve-from-hold request from remote equipment.
• gc_RetrieveCall( ) - Retrieves a call placed on hold from the Hold state.
• gc_RetrieveRej( ) - Rejects a retrieve-from-hold request from remote equipment.

See Chapter3, Sequence of Function Calls in ISDN, for a description of using the GlobalCall API functions in synchronous and asynchronous programming models to establish calls in an ISDN environment.

Click here to contact Dialogic Customer Engineering