To get the phone traffic automatically put on VLAN 10 you will need to setup VLAN 10 as the voice VLAN.  Enable globally. console(config)#voice vlan Enable voice VLAN on the specific interface.  console(config)# interface ethernet 1/g1  console(config-if-Gi1/0/1)# voice vlan 10 Set the interface to General/Trunk mode. I would try General mode first. console(config-if-Gi1/0/1)# switchport mode general console(config-if)# switchport general allowed vlan remove 10 With that configuration, once the port detects voice traffic it will place that traffic on VLAN 10. All non voice traffic coming from the client plugged into the phone will be placed on the PVID. 
Hi,  I've stacked two N2048P switches and created and added a VLAN 10 to all ports. I have assigned the VoiceVLAN to VLAN 10.  I'm trying to add the Polycom OUI so the Polycom phones are automatically picked up and assigned to VLAN 10.  I've done this before on my 3524P devices easily via web console as there is an option specifically for this. There is no such option in the web interface for the N2048P though so I'm attempting to add it via CLI but get an error.  SW-STACK1(config)# voice vlan oui-table add 0004f2 PolycomTIPT  it puts the error marker at the "O" in "oui". If anyone could point me in the right direction I'd really appreciate it.  Thanks, David.
N2048P adding OUI