243.3.11 QOS SettingThe QOS (Quality Of Service) is to guarantee that the Voice and Data should be transmitting at the same timeand Data couldn’t influence the Voice quality. When TOS bits is enabled, it will guarantee the Voice have the firstpriority pass through the TOS enable devices.QOS: Enable/Disable the QOS Service. Default setting is disable.Voice VLAN Priority: The priority value for voice packet. Default is 1.Voice VLAN ID: The voice VLAN ID. Default is 3.Data VLAN Priority: The priority value for data packet. Default is 0.Data VLAN ID: The data VLAN ID. Default is 4.SIP TOS/DiffServ: This option enables the phone to support QOS for SIP traffic in a network. This makes senseonly if all parts of the involved network also support QOS. Assign the priority value from 0 to 255. Default is 0.RTP TOS/Diffserv: This option enables the phone to support QOS for RTP traffic in a network. This makes senseonly if all parts of the involved network also support QOS. Assign the priority value from 0 to 255. Default is 0.