Dialogic 6.2 用户手册

The Bfv API Functions

November 2009

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The Bfv API uses argument structures to pass values to and from 

functions. The application declares the argument structure and 

passes a pointer to it to the function. The argument structure type is 

named args_...; for example, struct args_speech. The same 

argument structure type is used for functions that are related or in 

the same category.

Contained within the argument structure are structure fields that 

are used for input and/or output. Each function that uses an 

argument structure has marked the fields that are used for each 

purpose. Not all fields are used by all functions taking any particular 

argument structure type.

Result structures are the most commonly used structures to return 

information to the function. They are:

RES 

Returns status information in res.status and some additional 

information in res.line_status.

CALL_RES 

Returns information about a call such as its type and destination. If 

applicable, ISDN information such as called party and redirect 

information are returned as well.