[cisco-voip] auto qos not recognized on Cisco 2950 with EI IOS

[Joseph Mays]

I've got a Cisco 2950 here with IOS version 12.1.22(EA4). According to the 
cisco feature navigator, when I look up this image by the name of the IOS 
image name, auto qos is recognized. But whenever I try to enter "auto qos 
voip trust" on an interface, or any qos command anywhere, actually, I get 
"invalid input detected" (pointing at the word "auto" in the auto qos case). 
None of the auto qos or other qos commands seem to be in the command set. Do 
I need a different IOS (or is there some other 2950 I need for this)?

Joe