VoIP
VoIP carries voice calls over IP networks and is sensitive to latency and jitter.
Updated: 2026-03-05
Definition
Voice over IP (VoIP) transmits voice as data packets over an IP network.
Because it is real-time, it benefits from QoS to reduce latency and jitter.
Key points
- Real-time traffic (latency/jitter sensitive)
- Common protocols: SIP/RTP (conceptually)
- QoS is often required for good quality
Common mistakes
- No QoS during congestion (bad call quality).
- Incorrect VLAN separation for voice devices.
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