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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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Overview of Voice VLANs

Overview of Voice VLANs


Voice VLAN is a technology that transmits voice data.


Data, voice, and video services are often transmitted simultaneously over a network. Packet loss and delay seriously affect the voice communication quality. Voice services, in particular, require a higher forwarding priority than data or video services. When bandwidth is limited, voice data must have transmission preference over other types of data. This can be done by configuring a voice VLAN on the switch to transmit voice data and setting QoS parameters in the voice VLAN so that voice data is given preference when congestion occurs.

Updated: 2019-05-17

Document ID: EDOC1000174108

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