Dell PowerConnect 6248 User's Guide - Page 382

Configuring Voice VLAN The Voice VLAN feature enables switch ports to carry voice traffic with defined priority. The priority level enables the separation of voice and data traffic coming onto the port. A primary benefit of using Voice VLAN is to ensure that the sound quality of an IP phone is safeguarded from deteriorating when the data traffic on the port is high. The system uses the source MAC address of the traffic traveling through the port to identify the IP phone data flow. The Voice VLAN feature supports a configurable voice VLAN DSCP parameter. This allows you to set the DSCP value. This value is later retrieved by LLDP when the LLDPDU is transmitted if LLDP has been enabled on the port and the required TLV is configured for the port. Use the Voice VLAN Configuration page to configure and view voice VLAN settings that apply to the entire system and to specific interfaces. To display the page, click Switching →Voice VLAN →Configuration in the tree view. Figure 7-67. Voice VLAN Configuration The Voice VLAN Configuration page contains the following fields: • Voice VLAN Admin Mode - Select the administrative mode for Voice VLAN for the switch from the drop-down menu. The default is disable. • Port - Select the interface to view or configure. • Voice VLAN Interface Mode -Select the Voice VLAN mode for selected interface. The default is disable. The mode can be one of the following: - Disable - Disable voice VLAN on the port. 382 Configuring Switching Information