A company’s VolP phone connection is cutting in and out.

802.1 Q tagging is a method of adding a VLAN identifier to an Ethernet frame to indicate which VLAN the frame belongs to. This allows different VLANs to share the same physical link and device without interfering with each other. 802.1 Q tagging also supports a quality of service (QoS) scheme that can prioritize different classes of traffic based on the priority code point (PCP) field in the tag12

VoIP phone connection issues can be caused by network congestion, packet loss, jitter, or latency, which affect the quality and reliability of voice transmission over the Internet. By using 802.1 Q tagging, VoIP traffic can be separated from other data traffic and assigned a higher priority level, which reduces the chances of dropping or delaying voice packets. 802.1 Q tagging can also improve the security and scalability of VoIP networks by isolating different voice domains and preventing unauthorized access34