I configured CME with QCT on a 2801. My network already has data vlans configured and a 3550 switch is being used for inter vlan routing. All access switches connect to the 3550. The CME router also connects directly to the 3550 with 2 subinterfaces(one for data and the other for voice). I created a voice VLAN interface on the 3550 switch but that interface never comes up on the 3550 switch(status = down / prot = down ) . Since the phones will connecting from the access switches, unless the voice vlan interface comes up on the 3550 they will not be able to reach CME router. I have doubled checked, shutting down and bringing the voice VLAN but it always stays down. Connectivity exist between the 3550 and CME router through the native vlan but, the voice subinterface is up on the CME router but voice VLAN interface remains down on the switch.
Thanks for coming to my rescue.