Purpose To prevent a VBrick encoder from sending a video stream to a VBrick decoder not configured to accept it.

Description If an encoder is designated to transmit to another VBrick in Unicast mode, the encoder will poll the decoder to determine if the decoder is configured to accept the stream. If the decoder is not configured to accept the stream, the encoder will not send the video.

Key Functions Key functions include:

1. • Polling destination
2. • Preventing "denial of service" attack on a receiver

Applications Applications for serial port passthough includes:

1. • All Unicast applications
2. • Good network citizenship