7. Fax Data Structures

7.1. Overview

This chapter describes fax data structures used by the fax library.

Fax library data structures are defined in faxlib.h, which resides by default in the ...\dialogic\inc directory.

The data structures are shown in Table 16. Fax Data Structures.

Table 16. Fax Data Structures

Structure Name

Description

DF_ASCIIDATA

ASCII Data Description Structure.
Specifies the formatting of the ASCII data for a fax transmission. Parameters to be set include margins, page length, font selection, spacing between ASCII lines and number of tab stops on a line. A pointer in the DF_IOTT structure specifies the location of the DF_ASCIIDATA structure.

DF_DCS

Digital Command Signal Information Structure.
Provides the T.30 Digital Command Signal information in LSB format for the fx_getDCS( ) function call.

DF_DIS

Digital Identification Signal Information Structure.
Provides the T.30 Digital Identification Signal information in LSB format for the fx_getDIS( ) function call.

DF_IOTT

Fax Transfer Table Structure.
Describes the characteristics of the fax data to be sent. You can build an array or linked list of DF_IOTT structures to specify fax transmission from multiple sources within a single fx_sendfax( ) call.

DF_UIO

User-definable I/O Structure.
Contains user-defined I/O functions that replace standard read( ), write( ) and lseek( ) functions. The application installs the user-defined functions using the fx_setuio( ) function.

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Structure Name	Description
DF_ASCIIDATA	ASCII Data Description Structure. Specifies the formatting of the ASCII data for a fax transmission. Parameters to be set include margins, page length, font selection, spacing between ASCII lines and number of tab stops on a line. A pointer in the DF_IOTT structure specifies the location of the DF_ASCIIDATA structure.
DF_DCS	Digital Command Signal Information Structure. Provides the T.30 Digital Command Signal information in LSB format for the fx_getDCS( ) function call.
DF_DIS	Digital Identification Signal Information Structure. Provides the T.30 Digital Identification Signal information in LSB format for the fx_getDIS( ) function call.
DF_IOTT	Fax Transfer Table Structure. Describes the characteristics of the fax data to be sent. You can build an array or linked list of DF_IOTT structures to specify fax transmission from multiple sources within a single fx_sendfax( ) call.
DF_UIO	User-definable I/O Structure. Contains user-defined I/O functions that replace standard read( ), write( ) and lseek( ) functions. The application installs the user-defined functions using the fx_setuio( ) function.