Intel 05-2505-001 1.4 Relationship with Other Libraries

Conferencing API Programming Guide — August 2006 11

Product Description

A conference may be formed from parties that are connected to any one of the following

technology device handles:

•voice (dx) device handle

•IP media (ipm) device handle

•digital network interface (dti) device handle

Note: A device handle obtained from gc_OpenEx() in the Global Call API library cannot be used by

dev_Connect() to connect a party to a conference. Rather, you can use the device handle returned

by gc_GetResourceH( ) to connect a party to a conference.

1.4 Relationship with Other Libraries

A conferencing application is developed using the conferencing API library as well as other Intel®

Dialogic® API libraries, including the following:

•Standard Runtime Library (SRL)

•Device Management API Library

•Voice API Library

•IP Media Library API

•Global Call API Library

•Digital Network Interface API Library

The Standard Runtime Library (SRL) provides a common interface for event handling and other

functionality common to all devices.

The conferencing API uses three types of devices: virtual board device, conference device, and

party device. The conferencing API registers the virtual board device with the Standard Runtime

Library (SRL) when cnf_Open( ) is called. In addition, the conference device and the party device

are registered when cnf_OpenConference() and cnf_OpenParty( ), respectively, are called.

Conferencing events are posted to the SRL, which then delivers these events to the application. For

more information about SRL functions, see the Standard Runtime Library API Library Reference.

The device management API library provides run-time control and management of configurable

system devices. It includes functions to reserve resources and to manage the connections between

devices. It performs all necessary connection-related operations, including time slot management.

The device connection functions enable connection between conferencing devices and other

devices on HMP software, providing the ability for conferencing communication. Before a party

can participate in a conference, it must be connected to a supported technology device (such as

voice and IP media) using the dev_Connect() function. Conference bridging is also accomplished