[cisco-voip] Avaya VoIP solution and Cisco autoqos (QOS) options

[robert.bell1 at comcast.net]

We have an Avaya VoIP solution, which I'm still getting familar with. I am much more comfortable with Cisco's VoIP solutions, but my question is simple...I think.  I want to make sure QOS is setup properly.  I am wondering if I ran autoqos on all switch ports and router ports from end - to - end  would the Avaya equipment be properly covered. I did some research and so far all I've come up with is to do this:

class-map match-any VoIP
 match ip dscp 46

policy-map voipQoS
 class VoIP
  priority 816
  class class-default
  fair-queue
  random-detect dscp-based

interface Serial0
 description T1
 ip address 172.16.0.1
 service-policy output voipQoS


Now I know I would have to adjust it for my environment, but I'm not familiar with dscp 46 and what that does or how that sets the priority on the Avaya VoIP equipment.  I would really like to see some sample configs of cisco switch ports and router interfaces along with a quick explaination of why it this works or how maybe another way is better.  
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