1-5For different types of IP phones, the support for voice VLAN varies with port types and port configuration.For IP phones capable of acquiring IP address and voice VLAN automatically, the support for voiceVLAN is described in Table 1-2.Table 1-2 Matching relationship between port types and voice devices capable of acquiring IP addressand voice VLAN automaticallyVoice VLANassignmentmodeVoicetraffictypePort 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 defaultVLAN.TaggedvoicetrafficHybridSupportedMake 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.AccessTrunkAutomaticUntaggedvoicetraffic HybridNot supported, because the default VLAN of the port must be avoice VLAN and the access port is in the voice VLAN. This canbe done by adding the port to the voice VLAN manually.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 defaultVLAN and the voice VLAN.TaggedvoicetrafficHybridSupportedMake 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 ofthe tagged VLANs whose traffic is permitted by the access port.Access SupportedMake sure the default VLAN of the port is a voice VLAN.TrunkSupportedMake sure the default VLAN of the port is a voice VLAN and theport permits the traffic of the VLAN.ManualUntaggedvoicetrafficHybridSupportedMake sure the default VLAN of the port is a voice VLAN and isin the list of untagged VLANs whose traffic is permitted by theport.IP phones acquiring IP address and voice VLAN through manual configuration can forward only taggedtraffic, so the matching relationship is relatively simple, as shown in Table 1-3:
