A network administrator is setting up separate network segments for IP phones on an access switch. Which switch setting should be given priority to optimize call quality and overall performance for these voice devices?
Configuring a dedicated voice VLAN allows the switch to separate and apply Quality of Service (QoS) policies to voice traffic, reducing latency and jitter that can degrade call quality. While 802.1Q tagging identifies frames that belong to different VLANs, it does not by itself ensure that voice traffic receives higher priority. Link aggregation increases bandwidth and redundancy, and speed/duplex settings affect physical-layer performance, but neither directly provides the traffic prioritization required by real-time voice communications.
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What is a Voice VLAN and how does it work?
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Why is reducing latency important for voice communication devices?
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What are some other benefits of configuring a Voice VLAN beyond just prioritization?