We have a IP Communicator Phone that can call into the queue and reach an agent. I have another IP Communicator Phone that calls into the queue and gets trasferred twice and goes to a fast busy.
10.35.227.x is the IPC that works.
10.35.6.x is the IPC that does not work.
10.80.x.x is the voice vlan.
the 10.35.227.x network and the 10.35.6.x network are in the same network. We use /16 mask so there is no difference in routing. I also did a test last week where I put his softphone on the 10.80.x.x network and it was having the same issue. To me it does not seem like a network configuration problem. Maybe a configuration error in the softphone?