1-6Table 1-3 Matching relationship between port types and voice devices acquiring voice VLAN throughmanual configurationVoice VLANassignment mode Port type Supported or notAccess Not supportedTrunkSupportedMake sure the default VLAN of the port exists and is not a voiceVLAN, and the access port permits the traffic of the default VLAN.AutomaticHybridSupportedMake sure the default VLAN of the port exists and is not a voiceVLAN, and the default VLAN is in the list of the tagged VLANswhose traffic is permitted by the access port.Access Not supportedTrunkSupportedMake sure the default VLAN of the port exists and is not a voiceVLAN, and the access port permits the traffic of the default VLAN.ManualHybridSupportedMake sure the default VLAN of the port exists and is not a voiceVLAN, and the default VLAN and the voice VLAN is in the list of thetagged VLANs whose traffic is permitted by the access port.Security Mode of Voice VLANOn S5600 series Ethernet switches, a voice VLAN can operate in the security mode. Voice VLANsoperating in this mode only permit voice data, enabling you to perform voice traffic-specific priorityconfiguration. With the security mode disabled, both voice data and service data can be transmitted in avoice VLAN.Voice VLAN ConfigurationConfiguration Prerequisitesz Create the corresponding VLAN before configuring a voice VLAN.z VLAN 1 (the default VLAN) cannot be configured as a voice VLAN.Configuring QoS Priority Settings for Voice Traffic on an InterfaceIn voice VLAN applications, you can improve the quality of voice traffic by configuring the appropriateQoS priority settings, including the Class of Service (CoS) and Differentiated Services Code Point(DSCP) values, for voice traffic. Voice traffic carries its own QoS priority settings. You can configure thedevice either to modify or not to modify the QoS priority settings carried by incoming voice traffic.Follow these steps to configure QoS priority settings for voice traffic:To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —
