What does a voice VLAN not offer you?

A voice VLAN is specifically designed to optimize the transmission of voice traffic over a network. One of its primary functions is to enhance the Quality of Service (QoS) associated with voice communications, which helps prioritize voice packets over other types of data traffic. This prioritization aids in maintaining call quality, reducing latency, and ensuring that voice traffic is separated from other data.

While voice VLANs effectively manage QoS, achieve reduced latency, and ensure traffic separation, they do not inherently provide encrypted communication. Voice traffic can be susceptible to interception and eavesdropping unless specifically secured through additional protocols or encryption methods such as Secure Real-Time Transport Protocol (SRTP) or Virtual Private Networks (VPNs). Therefore, while a voice VLAN supports performance characteristics beneficial for voice traffic, encryption is not a built-in feature of a voice VLAN itself.