The PC's do connect through the phones.
They are 5330's and 5340's
it's everytime according to the end user.
The phones sit on a different VLAN than the pc. The phone's receive their IP via the PBX and PC's through another DHCP server.
They do use applications but not UCA as I'm not sure what this is. They use are core applications but those are used everywhere and this is happening at only a few sites.
Thanks,