# Programming scenarios

The following illustrations present scenarios for combining Aztek Access303 or Exchange303 library functions with NMS GR303 library functions to perform interface management and to conduct LAPD data communication over T1 connections. In these illustrations, the solid arrows represent commands and the dotted arrows represent data transfer.

The following scenarios are presented:

- Initializing an interface

- Stopping and restarting without re-provisioning

- Stopping, re-provisioning, and starting

- Modifying standby locations

Refer to the Aztek Access303 or Exchange303 documentation more information about Aztek GR303 library functions.

## Initializing an interface

The following illustration shows functions used to initialize a GR303 interface for the RDT application:

## Stopping and restarting without re-provisioning

The following illustration shows functions used to stop and restart a GR303 interface without re-provisioning layer 1:

## Stopping, re-provisioning, and starting

The following illustration shows functions used to stop a GR303 interface, re-provision all layers, and start the interface:

## Modifying standby locations

The following illustration shows functions used to modify GR303 interface standby locations without stopping the interface: