# Steps for developing an NMS ISDN application

To create an NMS ISDN application, follow these steps:

Step | Action | Where step is documented
--- | --- | ---
1 | Install AG or CG boards, and any other boards you need for the application in the system. | The hardware installation manual
2 | Install Natural Access. | The Natural Access installation booklet
3 | Install NMS ISDN software for each country or region where your application will be used. | The Natural Access installation booklet
4 | Create the board keyword file for each board in the system. | Creating board keyword files The hardware installation manuals NMS OAM System User's Manual
5 | Configure on-board software for NMS ISDN on the board keyword files. | Configuring on-board software for NMS ISDN
6 | Configure data routing on the board keyword files. | Configuring data routing The hardware installation manuals
7 | Set up NFAS groups on the board keyword files. | Setting up NFAS groups The hardware installation manuals
8 | Create an OAM system configuration file that describes all boards in the system. | Creating a system configuration file for oamsys The hardware installation manuals NMS OAM System User's Manual
9 | Run the omasys utility to set up the NMS OAM database. | Running oamsys The hardware installation manuals NMS OAM System User's Manual
10 | Test the hardware installation. | Verifying the installation The hardware installation manuals
11 | Write the application. | NMS ISDN for Natural Call Control Developer's Manual NMS ISDN Messaging API Developer's Reference Manual NMS ISDN Management API Developer's Reference Manual The Natural Access documentation set