# Example 2: Negotiating video with AL2

This topic shows an example where the application initiates the call, and both sides negotiate video with AL2 using unidirectional video OLCs. (Both sides support video AL2.) It describes this call flow in two parts:

- Part 1 describes the communication among the application, H.324M Middleware, and 3G terminal for master/slave determination and for setting up the MUX.

- Part 2 describes the communication among the application, H.324M Middleware, and 3G terminal for setting up video and audio. It also describes the communication for a call in progress and for call teardown.

## Negotiating video with AL2 – Part 1

## Negotiating video with AL2 – Part 2