Operation Manual – VLANH3C S5500-EI Series Ethernet Switches Chapter 2 Voice VLAN Configuration2-1Chapter 2 Voice VLAN ConfigurationWhen configuring Voice VLAN, go to these sections for information you are interestedin:z Introduction to Voice VLANz Configuring Voice VLANz Displaying and Maintaining Voice VLANz Voice VLAN Configuration2.1 Introduction to Voice VLANA voice VLAN is configured specially for voice traffic. By adding the ports that connectvoice devices to the voice VLAN, you can configure quality of service (QOS for short)attributes for the voice traffic, improving transmission priority and ensuring voice quality.A device determines whether a received packet is a voice packet by checking its sourceMAC address. Packets containing source MAC addresses that comply with the voicedevice Organizationally Unique Identifier (OUI for short) addresses are regarded asvoice traffic, and are forwarded to the voice VLAN.You can configure the OUI addresses in advance or use the default OUI addresses,which are listed as follows.Table 2-1 The default OUI addresses of different vendorsNumber OUI address Vendors1 0001-e300-0000 Siemens phone2 0003-6b00-0000 Cisco phone3 0004-0d00-0000 Avaya phone4 0060-b900-0000 Philips/NEC phone5 00d0-1e00-0000 Pingtel phone6 00e0-7500-0000 Polycom phone7 00e0-bb00-0000 3Com phone
