Video requires more bandwidth than voice with similar latency sensitivity.
Video requirements:
- Latency: Under ms
- Jitter: Under ms
- Packet loss: Under %
- Bandwidth: Kbps to Mbps
Video characteristics:
- Variable bit rate (I-frames larger)
- Bursty during scene changes
- Higher bandwidth than voice
QoS treatment:
- Mark with DSCP AF41
- Use CBWFQ with guaranteed bandwidth
- Do not use strict priority. Bursts could starve others.
- Apply shaping to smooth bursts
Voice gets strict priority. Video gets bandwidth guarantee. Voice takes precedence during congestion.