Configure Switching Information 
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 M4300 Series and M4300-96X Fully Managed Switches User Manual
6.  In the Prioritization Type field, select Traffic Class or Remark.
This specifies the type of prioritization. 
7.  In the Class Value
 list, specify the CoS tag value to be reassigned for packets received on 
the voice VLAN when Remark CoS is enabled.
8.  Click the Apply button.
Your settings are saved.
Configure Auto-VoIP OUI-Based Properties
 To configure auto-VoIP OUI-based properties:
1.  Launch a web browser.
2.  In the address field of your web browser, enter the IP address of the switch.
The login window opens.
3.  Enter the user name and password. 
The default admin user name is 
admin and the default admin password is blank, that is, 
do not enter a password.
4.  Click the Login button. 
The System Information page displays.
5.  Select Switching > 
Auto-V
oIP > OUI-based > Properties.