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Use the undo voice vlan security enable command to disable the security
mode for voice VLAN.
By default, the security mode of voice VLAN is enabled.
nThe voice vlan security enable and undo voice vlan security enable
commands take effect only after the voice VLAN attribute is enabled globally.
Example # Disable the security mode of the voice VLAN.
<Sysname> system-view
[Sysname] undo voice vlan security enable