class-map match-any voice-class-map
  match  dscp ef
  match ip dscp ef
!
!
policy-map voice-policy-map
  class voice-class-map
   priority 64
  class class-default
   bandwidth remaining percent 100
   random-detect discard-class-based
!
!
!
!
!
i
interface Ethernet0
 bandwidth 256
 ip address 209.16.67.160 255.255.255.0
 ip nat outside
 half-duplex
 service-policy output voice-policy-map
!
interface FastEthernet0
 ip address 172.17.2.1 255.255.255.0
 ip nat inside
 speed auto
 service-policy output voice-policy-map
!