# Demonstration programs

The following demonstration programs are provided with Natural Access and can be used to verify that the AG 2000-BRI board is operating correctly:

Program | Demonstrates...
--- | ---
isdndemo | Starting the ISDN stack, receiving and placing calls in ACU configuration using the NMS ISDN Messaging API.
isdncta | Starting and stopping the ISDN stack.
isdnncc | Receiving and placing calls in channelized configuration using the Natural Call Control (NCC) API.
ctatest | Receiving and placing calls in channelized configuration, media functions using NCC and ADI APIs.
vceplay | Natural Access functions.
vcerec | Recording one or more messages to a voice file.

Note: Executables for isdndemo and isdnncc are in the respective sub-directories under nms\ctaccess\demos.

To run these demonstration programs on the AG 2000-BRI board, specify the board number, the ISDN variant, and the trunk configuration (TE or NT mode).

For example, enter the following command to run isdndemo for board 2, NTT variant, and NT mode:

isdndemo -b2 -p9 -n NT

Refer to the Natural Access Developer's Reference Manual for information on Natural Access demonstration programs and to the NMS ISDN manuals for ISDN demonstration programs.