3com 3CBLSF26H Manual De Usuario

 

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There are two operational modes for IP Phones: 

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IP phones are configured with VLAN-mode as enabled, ensuring that tagged packets are used for 

all communications. 

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If the IP phone’s VLAN-mode is disabled, the phone uses untagged packets. The phone uses 

untagged packets while retrieving the initial IP address through DHCP. The phone eventually uses 

the Voice VLAN and starts sending tagged packets. 

This section contains the following topics: 

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Defining Voice VLAN Port Settings 

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Viewing Voice VLAN Port Settings 

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The Voice VLAN OUI Modify Page allows network administrators to add new OUIs or to remove 

previously defined OUIs from the Voice VLAN. The packet priority derives from the source/destination 

MAC prefix. The packet gets higher priority when there is a match with the OUI list. Using the OUI, 

network managers can add a specific manufacturer’s MAC addresses to the OUI table. Once the OUIs 

are added, all traffic received on the Voice VLAN ports from the specific IP phone with a listed OUI, is 

forwarded on the voice VLAN. 

Click Device > QoS > VoIP Traffic Setting > OUI Modify. The Voice VLAN OUI Modify Page opens. 

Figure 3-59 Voice VLAN OUI Modify Page 

 

 

The Voice VLAN OUI Modify Page contains the following fields: 

Table 3-48 Voice VLAN OUI Modify Page item description 

Telephony OUI 

Defines a new or existing OUI on the Voice VLAN. The field contains the 3 
most significant bytes of the MAC address. 

Description 

Enters a user-defined OUI description. The field may contain up to 32 
characters. 

Add 

Allows the user to add a new OUI. 

Remove 

Allows the user to delete an existing OUI.