Voice VLAN on N1148T-ON

Hey,

I have some trouble getting voice vlan to work on my Dell N1148T-ON switch.

 

I have already configured in on a Dell N1148P-ON using the following commands:

(conf) voice vlan

(conf) lldp med all

(conf-if) switchport mode access

(conf-if) switchport access vlan 9

(conf-if) voice vlan 6

(conf-if) voice vlan auth disabled

 

On the N1148P-ON, all phones are put into the correct VLAN when rebooted.

It seems, however that this doesn't work on N1148T - I don't know whether it's because the phones aren't being powered by PoE or if I'm missing a command on the N1148T model?

 

Thanks in advance,