Cisco 3550 Switch Voice Not working

[Drakkoneth]

Hi Everyone,

I am currently getting a new phone system installed and everything is setup to use vlan 120 for voice.  I have made the changes is all of my switches, however, all my 3550 switches do not seem to be letting the data go through or communicate.  It works fine on my 3560s.  We are switching from a cisco unified system to a cloud based through out Internet provider which is using Polycom 311s

This is an example of one of the port settings

interface FastEthernet0/4
switchport access vlan 10
switchport mode access
switchport voice vlan 120
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
wrr-queue bandwidth 20 1 80 1
wrr-queue min-reserve 1 5
wrr-queue min-reserve 2 6
wrr-queue min-reserve 3 7
wrr-queue min-reserve 4 8
wrr-queue cos-map 1 0 1 2 4
wrr-queue cos-map 3 3 6 7
wrr-queue cos-map 4 5
priority-queue out
spanning-tree portfast

Any assistance would be appreciated

Thanks

[Drakkoneth]

I have trying tagged and untagged.  I did try switching a port to Trunk and allowing 120 and 10 (My Data Network) on it but still no luck.  My next step I think is to try and figure out if I can get it to communicate on my data network and add an option to my dhcp to send it to the proper vlan and see if I can get that to work.  I am just not sure how to set that up yet.

Thank you for your response