Dell N1100-ON Reference Manual page 836

Example
(console)#show voice vlan interface gi1/0/1
Interface...................................... Gi1/0/1
Voice VLAN Interface Mode...................... Enabled
Voice VLAN Priority............................ 2
Voice VLAN COS Override........................ True
Voice VLAN DSCP Value.......................... 46
Voice VLAN Port Status......................... Disabled
Voice VLAN Authentication...................... Disabled
836
Layer 2 Switching Commands