# Summary of the demonstration programs and utilities

The following demonstration programs and utilities are shipped with the PPX service:

Program or utility | Description
--- | ---
brd2brd | Demonstrates call transfer from an incoming line to an outgoing line over the MVIP bus. The PPX service is used to make connections.
callcntr | Demonstrates a call transfer from an incoming line to an outgoing line over the MVIP bus. The PPX service is used to create a connection and add talkers or listeners to the connection.
swish | Enables interactive or text-file-driven control of MVIP switches. swish provides a convenient way to manually test connections during development.
showcx95 | Displays switch connections for all boards that have MVIP switches.
ppxservicecfg | Installs the PPX server as a Windows service or removes it from the registry.

Natural Access is shipped with source code for all demonstration programs. Each demonstration program is shipped as an executable program and includes its source files and its makefiles.

Before you start the demonstration programs, verify that:

- Natural Access is properly installed.

- The NMS boards are booted.

- MVIP switching is correctly configured.

- nocc.tcp protocol is available to the board for the outbound call.

- The PPX server is properly configured and installed.

Refer to the appropriate board manual for details on board installation.