# Summary of the demonstration programs

The following demonstration programs are supplied with the CDI service:

Program | Description
--- | ---
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.

Natural Access is shipped with source code for all demonstration programs. Each demonstration program is shipped as source and makefiles.

Before you start the demonstration programs, ensure that:

- Natural Access (including the CX software) is properly installed.

- Hot Swap Manager service is started (for CX 2000C).

- Point-to-Point Switching (PPX) service is installed and started.