# Using CX demonstration programs

The following demonstration programs are provided with the CX software:

Program | Description
--- | ---
cditest | Verifies that the CDI service is operational and demonstrates CDI service functions.
cdicc | Demonstrates a call center application using the CDI service, with mixed board support in a single application.
cdipbx | Demonstrates a PBX application using the CDI service.

Refer to the CDI Service Developer's Reference Manual for information about cdicc and cdipbx.

Before you start a demonstration program, ensure that:

- Natural Access is properly installed.

- The boards are properly installed.

- One or more boards are booted.