I want to implement QoS to improve voice quality on our network. We are a Cisco shop. The switches are 2950's and 3750's and the routers used ranges from 2800's to 3845's. Should I implement AutoQoS or configure QoS manually? If Autoqos is suggested, what IOS on the switches and routers supports this? Can you send sample configs? I'm new to QoS. TIA.